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Compound half-life reference

Compare the timing used by the plotter. A model-derived half-life, a study measurement and an assumed value are different kinds of information. Open each timing basis for the source context.

Relative models can use measured timing transferred from another route, animal data or an explicit assumption. None of these values is a personal clearance time or a dosing interval.

Compound Half-life Timing basis
HCG 36.8 hours
Reconstructed estimate

Study endpoint used in an estimated curve. Highly purified urinary hCG, Choriomon, subcutaneous injection; 24 healthy women aged 20–45 in a crossover pharmacokinetic analysis, with oral-contraceptive pituitary downregulation.

Model details and sources
Human Growth Hormone (HGH) 2.4 hours
Reconstructed estimate

Omnitrope solution single-dose study EP2K-00-PhIAQ, N=24; apparent SC tail, not intrinsic IV elimination.

Model details and sources
Semaglutide Injection (Ozempic/Wegovy) 7.4 days
Model-derived

Derived from the published model rates. Subcutaneous semaglutide solution in the SUSTAIN phase III program; Subcutaneous. Published reference: 85 kg white, non-Hispanic female under 65 with type 2 diabetes and normal renal function.

Model details and sources
Semaglutide Oral (Rybelsus) 6.6 days
Model-derived

Derived from the published model rates. Original oral semaglutide/SNAC formulation studied with 300 mg SNAC; first-generation Rybelsus context, not newer oral formulations; Oral tablet. Healthy 85 kg adult without type 2 diabetes; fixed published reference parameters, not an average patient.

Model details and sources
Tirzepatide (Mounjaro) 5.1 days
Model-derived

Derived from the published model rates. Subcutaneous tirzepatide in the published pooled-study model, using its estimated relative-bioavailability scenario; Subcutaneous. Constructed adult female reference with type 2 diabetes: 90 kg and BMI 32.5 kg/m²; not a published average participant.

Model details and sources
Retatrutide 5.6 days
Reconstructed estimate

Coskun 2022 Table 1, 1 mg cohort: geometric mean terminal half-life134h; median Tmax48h.

Model details and sources
Mazdutide 8.8 days
Reconstructed estimate

Innovent Chinese label: Tmax7–28h, rounded mean terminal half-life about10days. Label apparent clearance .0368L/h and volume11.2L.

Model details and sources
Cagrilintide 7.3 days
Reconstructed estimate

Nielsen2026 Table5 normal hepatic function: half-life174h and Tmax45h.

Model details and sources
Dulaglutide (Trulicity) 3.5 days
Reconstructed estimate

NCT01667900, Part A Day1,1.5mg group: median Tmax48h; geometric mean half-life82.9h.

Model details and sources
Pramlintide (Symlin) 48 min
Reconstructed estimate

Symlin label Table5: Tmax21minutes=.35h; half-life48minutes=.8h.

Model details and sources
Survodutide 4.8 days
Reconstructed estimate

Table4 first0.6mg dose Tmax23.7h; Results3.3 reports DG2 terminal half-life114h after repeated/escalated dosing.

Model details and sources
5-Amino-1MQ 12 hours
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (3 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Human route/formulation, systemic exposure, absorption and terminal kinetics were not established by the reviewed source. Cell permeability cannot supply oral bioavailability.
Model details and sources
Adipotide 58 min
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • No matched human concentration/time endpoint was verified. Do not translate the primate experimental regimen into human calibration.
Model details and sources
HGH Fragment 176-191 (AOD-9604) 12 hours
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (3 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Product identity, free-base/salt basis and route must be specified before absolute calibration. The stored 12-hour timing is unsupported, not a source-backed elimination half-life.
Model details and sources
MGF (Mechano Growth Factor) 29 min
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not substitute IGF-1, intact IGF1Ec or tissue-expression time courses for isolated MGF blood kinetics.
Model details and sources
PEG-MGF (Pegylated MGF) 19.2 hours
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (4.8 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • PEG size, conjugation and product identity are not specified. A PEG-containing delivery scaffold does not establish the circulation kinetics of a PEG-MGF conjugate.
Model details and sources
IGF-1 DES 29 min
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Tracer radioactivity, parent analyte and human administered-product exposure are not interchangeable. Retained timing is an assumption.
Model details and sources
IGF-1 LR3 12 hours
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (3 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Potency or duration of biological response is not an elimination half-life. No human product/route Cmax was verified.
Model details and sources
CJC-1295 with DAC 5.8 days
Relative model

30µg/kg cohort half-life5.8d from Teichman figure2;1.25h is midpoint assumption within reported1–1.5h peak window, not measured cohort mean.

  • The faster rate is inferred to match the 1.25 h source-scoped peak time; absorption half-life 0.12313185117369821 h is a mathematical shape parameter, not separately measured.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • No study cohort mean weight recovered, so30µg/kg cannot become2mg or2.1mg without an explicit assumed reference weight.
  • AUCt is to last sampling, not infinite; exact last measurable time differs by subject. Do not compare it as if AUCinf.
  • DAC albumin-bound analyte assay and formulation are not interchangeable with free no-DAC GRF.
  • With139.2h tail and1.25h assumed Tmax, a simple peak-normalized Bateman is unsuitable for reproducing the observed early/late profile.
Model details and sources
CJC-1295 without DAC (Modified GRF 1-29) 29 min
Relative model

Retained historical illustrative timing assumption only; no validated human SC half-life recovered for this specific form.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Identity/salt ambiguity persists; no-DAC is not the DAC molecule with a different schedule.
  • No measured SC F,Tmax or concentration amplitude supports the current curve.
  • Relative output must explicitly identify timing assumption.
Model details and sources
Ipamorelin 2 hours
Relative model

Terminal half-life after15min IV infusion in healthy men; extrapolated to SC shape only. SC absorption remains assumed.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.5 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Vss is not automatically central volume in a two-compartment model.
  • Do not use GH Cmax, EC50 or production rate as ipamorelin concentration.
  • No substantiated human SC F or matched Cmax/ref-dose/Tmax recovered.
Model details and sources
Sermorelin 4 min
Relative model

Soule1994 human IV disappearance half-time4.3±1.4min; using it for SC is a route extrapolation, not a measured SC terminal value.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.017916666666666668 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Historical Geref11–12min and6%SC figures were located only via secondary mirrors, not a primary label; not silently adopted.
  • No matched SC concentration endpoint set recovered; do not borrow GH peaks.
Model details and sources
Tesamorelin 11 min
Relative model

Single EGRIFTA WR1.28mg SC dose in healthy subjects, same label study. Original2mg Egrifta26/38min values came after14days, not this single-dose WR formulation.

  • The faster rate is inferred to match the 0.15 h source-scoped peak time; absorption half-life 0.06452204183467626 h is a mathematical shape parameter, not separately measured.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Peak/Tmax/tail reconstruction gives AUC1.7866ng·h/mL versus1.172reported (+52.4%); do not call all endpoints reproduced.
  • Either explicitly identify WR in model scope or keep generic formulation relative; never relabel saved2mg inputs as1.28mg.
  • No additional F multiplier because peak includes availability.
  • Source variability is large; means of endpoints need not define one typical individual curve.
Model details and sources
GHRP-2 33 min
Relative model

Pihoker 1998: terminal beta half-life in prepubertal children with short stature after 1 µg/kg IV over 1 min. Applying this to catalog SC scenarios extrapolates route and population.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.1375 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • No matched adult SC availability, Tmax or dose-calibrated peak recovered.
  • The pediatric IV 7.4 ng/mL peak must not be attached to a generic 0.1 mg SC dose.
  • A single compartment does not reproduce the source biexponential disposition.
Model details and sources
GHRP-6 2.5 hours
Relative model

Cabrales 2013: IV terminal half-life 2.5 ± 1.1 h; distribution half-life 7.6 ± 1.9 min. SC absorption was not measured.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.625 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • The study used larger weight-based IV exposures than typical catalog SC scenarios.
  • No SC availability, Cmax or Tmax was established.
  • This does not model GH concentration.
Model details and sources
MK-677 (Ibutamoren) 5 hours
Relative model

Historical illustrative assumption. The regulator review found no detailed clinical PK supporting a human plasma half-life. A 24 h GH/IGF effect duration is not a plasma half-life.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.25 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not turn dog bioavailability into human availability.
  • No retrieved human paired parent-drug dose, Cmax and Tmax support an absolute scale.
  • Future product-specific LUM-201 work may provide calibration; no complete verified candidate was recovered here.
Model details and sources
ACE-031 13 days
Relative model

Illustrative midpoint of 12.5 days within the reported human 10–15 day range; not a published cohort mean.

  • Absorption half-life is assumed to be one quarter of the slower timescale (75 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not infer a fixed absolute dose from mg/kg without an explicit reference weight.
  • Native ActRIIB and the Fc fusion are different molecules.
  • The proposed 300 h relative curve uses a range midpoint assumption; it predicts neither blood concentration nor muscle growth.
Model details and sources
AICAR 1.4 hour
Relative model

Dixon 1991: harmonic mean terminal phase of 1.4 h after IV infusion. SC absorption remains unknown.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.35 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • No matched human SC calibration was recovered.
  • The week-long radioactivity tail is not parent-acadesine elimination.
  • Vss is not central volume; a monoexponential absolute model cannot be inferred from it.
Model details and sources
EPO (Erythropoietin) 9.6 hours
Relative model

The historical 9.6 h value falls inside the 4–13 h IV CKD label range, but is not a verified SC estimate. SC timing varies with dose and population; label Tmax is 5–24 h.

  • Saved numerical amounts retain their original values. No conversion to milligrams or IU is established.
  • Absorption half-life is assumed to be one quarter of the slower timescale (2.4 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not reinterpret legacy stored amounts as mass or IU.
  • An IU conversion requires a separately verified serialization and migration contract.
  • One SC curve cannot represent all CKD, cancer, dialysis and healthy populations.
Model details and sources
HMG (Menotropin) 12 hours
Relative model

Proposed 12 h is the midpoint of the Menopur 11–13 h FSH half-life range during multiple dosing. Single-dose Tmax 17.9 h belongs to a different phase and must not be combined blindly.

  • Saved numerical amounts retain their original values. No conversion to milligrams or IU is established.
  • Absorption half-life is assumed to be one quarter of the slower timescale (3 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • FSH is not total menotropin, LH or hCG.
  • No IU-to-mass conversion is adopted; saved amounts must not be reinterpreted.
  • The proposed timing concerns the FSH component and multiple-dose study, not universal menotropin kinetics.
  • A future FSH model is feasible after dose-unit mapping, baseline handling and matched model-shape verification.
Model details and sources
Gonadorelin Acetate 4 min
Relative model

Human gonadorelin hydrochloride SmPC: rapid plasma hydrolysis with about 4 min half-life; SC/IV diagnostic formulation.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.016666666666666666 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Acetate preparations are not demonstrated bioequivalent.
  • The LH diagnostic response is not gonadorelin concentration.
  • SC peak and availability remain uncalibrated.
Model details and sources
Kisspeptin 28 min
Relative model

KP54 IV half-life is about 27.6 min; KP10 is about 3.8–4.1 min. Neither establishes SC absorption for the generic product.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.115 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Clarify peptide identity beside the curve; do not silently treat all kisspeptin as KP54.
  • Absolute calibration requires a known peptide length, analyte, route, assay and reference dose.
  • This curve does not include endogenous peptide or predict gonadotropin responses.
Model details and sources
BPC-157 17 min
Relative model

Rat IM 100 microgram/kg saline BPC157: half-life 17.1 min, Tmax 3 min. The 2-person human IV pilot reports safety biomarkers, not peptide concentration calibration.

  • The faster rate is inferred to match the 0.05 h source-scoped peak time; absorption half-life 0.009976653025332967 h is a mathematical shape parameter, not separately measured.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Animal IM timing does not establish human SC absorption or elimination.
  • Do not use total radiolabel half-life: the radiolabel includes metabolites and recycled amino acids.
  • Rat/dog Cmax must not be scaled into a human blood estimate.
Model details and sources
TB-500 (Thymosin Beta-4) 1.9 hours
Relative model

Ruff 2010:40 healthy volunteers, single 42–1260 mg IV then daily 14 days; dose-dependent half-life. The legacy 1.92 h is not a verified SC half-life.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.48 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Product sequence and route are unresolved for a generic TB-500 entry.
  • Do not transplant the full-length IV peak or half-life to the 7-residue fragment.
Model details and sources
TB-500 Fragment 58 min
Relative model

The 2024 study examines human-serum/enzyme incubations and rat urine. Metabolite detection to 72 h is not the parent plasma half-life; legacy 0.96 h remains an assumption.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • No human parent-peptide systemic calibration established in reviewed sources.
  • Ac-LKKTE wound-assay activity is a metabolite effect, not a blood exposure endpoint.
Model details and sources
Thymosin Alpha-1 2 hours
Relative model

Rost 1999: nine Caucasian volunteers,900 microgram/m² SC, three-way formulation crossover, single and 5 day administration; Tmax 1–2 h, half-life<3 h. Use 2 h/1.5 h as explicitly inferred representative timing, not a reported fitted parameter pair.

  • The faster rate is inferred to match the 1.5 h source-scoped peak time; absorption half-life 0.6075545274580504 h is a mathematical shape parameter, not separately measured.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Zadaxin/Timosina/Talpha 1-HLR show different exposure.
  • The 63 ng/mL at 1.6 mg value is present in a 2024 review but primary product/cohort linkage was not established in this pass.
  • Apparent volumes/clearance already include F.
Model details and sources
ARA-290 (Cibinetide) 20 min
Relative model

PKARA: healthy male crossover;4 mg SC n 5, Cmax 2.0±0.7 ng/mL, Tmax 6 min, AUC148 ng·min/mL, terminal~20 min. Later clinical paper summarizes~3 ng/mL; do not silently replace the original cohort mean.

  • The faster rate is inferred to match the 0.1 h source-scoped peak time; absorption half-life 0.024645183502450502 h is a mathematical shape parameter, not separately measured.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Source Cmax 2 ng/mL and AUC148 ng·min/mL imply an AUC/peak ratio 1.233 h; a 20 min/6 min one-compartment curve gives about 71 ng·min/mL, substantially below 148.
  • Reported 2/4/6 mg SC peaks 1.6/2.0/7.4 ng/mL are not proportional across all tested amounts.
  • Bioavailability and volume must not be invented.
Model details and sources
SS-31 (Elamipretide) 3.9 hours
Model-derived

Derived from the published model rates. Elamipretide hydrochloride solution, 40 mg active moiety in 0.5 mL in the source comparator.; Subcutaneous abdomen. Fixed tabulated SPICP-105 parameters from 41 healthy participants; no particular reference age or weight is asserted..

Model details and sources
MOTS-c 12 hours
Relative model

Legacy 12 h has no administered-human timing support in reviewed sources.

  • Absorption half-life is assumed to be one quarter of the slower timescale (3 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not substitute the modified analog CB4211 or engineered R13A-MOTS-c for native MOTS-c.
  • Endogenous biomarker concentrations cannot calibrate an entered exogenous dose.
Model details and sources
LL-37 (Cathelicidin) 58 min
Relative model

Legacy 0.96 h is a scenario assumption; wound-healing duration and endogenous cathelicidin concentration are not plasma elimination.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Topical/local concentration cannot be scaled to a generic SC blood curve.
  • LL-37 analog and carrier/nanoparticle PK does not establish native peptide exposure.
Model details and sources
KPV 29 min
Relative model

Legacy 0.48 h is not established by the transporter or mouse efficacy study.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Cell-culture nanomolar efficacy and PepT1 uptake kinetics are not plasma concentration-time parameters.
  • Oral mouse exposure cannot establish human SC F.
Model details and sources
Thymalin 58 min
Relative model

Legacy 0.96 h is an assumed single-timescale approximation, not measured clearance of the extract.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not transfer thymosin alpha 1, thymogen or vilon PK to this mixture.
  • Total preparation mass does not identify a circulating peptide analyte.
Model details and sources
VIP (Vasoactive Intestinal Peptide) 1 min
Relative model

Domschke 1978: four healthy volunteers,30 min graded IV infusions; approximately 1 min plasma disappearance after stopping infusion. This can inform a fast IV relative scenario, not a validated intranasal profile.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.004166666666666667 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Inhaled, intranasal, intracavernosal and IV aviptadil are not interchangeable.
  • A terminal 21 minute phase in other IV studies differs from the initial 1–2 minute disappearance phase.
Model details and sources
Dermorphin 41 min
Relative model

Replace legacy 0.48 h with the reported horse IM terminal 0.68 h only as an explicitly animal-derived relative scenario. IV distribution 0.09 h and terminal 0.76 h are distinct. Do not apply the horse 47–100%IM bioavailability to people.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.17 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not borrow data for Lys 7-dermorphin fluorescent probes or dermorphin-ranatensin hybrids.
  • A human intrathecal dose cannot calibrate a blood curve.
Model details and sources
PNC-27 58 min
Relative model

Legacy 0.96 h is a scenario assumption; cell lysis onset and in-vitro exposure duration are not elimination.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Cell-culture concentrations cannot be used as injected blood Cmax.
  • Do not substitute PNC-28 or a different delivery conjugate.
Model details and sources
FOXO4-DRI 12 hours
Relative model

Legacy 12 h is not a human measured half-life. D-retro-inverso design or days between mouse doses do not quantify clearance.

  • Absorption half-life is assumed to be one quarter of the slower timescale (3 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Mouse efficacy schedules are not human elimination evidence.
  • Different FOXO4 peptide sequences/conjugates cannot share calibration automatically.
Model details and sources
GHK-Cu (Copper Peptide) 58 min
Relative model

Legacy 0.96 h is unverified for administered-human intact GHK-Cu. No quantitative timing is imported from free-GHK degradation.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Free GHK, intact GHK-Cu, total copper and endogenous baseline GHK are different analytes.
  • Topical cosmetic concentrations and assay calibration ranges are not plasma Cmax.
Model details and sources
AHK-Cu 58 min
Relative model

Legacy 0.96 h is an assumption; the 10^-12–10^-9M in-vitro range is an experiment concentration, not a PK endpoint.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not borrow GHK-Cu or freeGHK pharmacokinetics.
  • No administered-human route-matched absolute calibration established.
Model details and sources
Glutathione 29 min
Relative model

Hong 2005: seven fasting male volunteers aged 22–23,50 mg/kg over 10 min IV (meanweight 65.5 kg); rapid parentGSH loss about 10 min. Legacy 0.48 h is not an established generic route half-life. Keep generic relative timing unvalidated until route-specific selection; the 10 min IV measurement is a source observation, not silently adopted for oral orSC dosing.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • ReducedGSH, oxidizedGSSG and totalGSH must be separated.
  • The reviewed IV study subtracts baseline for exposure calculations; it cannot be transplanted to oral/IM/SC use.
  • A future dedicated IV model needs infusion input and exact analyte-specific table extraction; do not mistake total GSH for the reduced-GSH peak.
Model details and sources
Semax 29 min
Relative model

Legacy 0.48 h is an assumption, not measured human systemic half-life. Brain residence or 4–8 h effects must not be substituted for blood elimination.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Species/route and parent/metabolite separation remain unresolved for absolute exposure.
  • Do not import enkephalin half-life from enzyme-inhibition experiments.
Model details and sources
Selank 29 min
Relative model

Legacy 0.48 h is unverified; enkephalin half-life is explicitly a different molecule.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not interpret inhibited leu-enkephalin degradation as Selank elimination.
  • Intranasal rat brain distribution does not calibrate human SC plasma.
Model details and sources
Adamax 29 min
Relative model

Legacy 0.48 h is not source-backed; evidence reviewed does not establish that acetylation/amidation or another modification confers a numeric extension.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Compound identity can differ among vendor descriptions.
  • No compound-specific administered-human calibration established in reviewed records.
Model details and sources
Cerebrolysin 58 min
Relative model

Legacy 0.96 h is an assumed display timescale, not measured mixture clearance.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • The 215.2 mg/mL product concentration is preparation mass, not peptide Cmax.
  • Do not assign a universal molecular weight to the complex or reinterpret saved milligram amounts as mL.
Model details and sources
Pinealon 58 min
Relative model

Legacy 0.96 h is an assumed timescale; cell penetration and neurite changes are not elimination.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Transport-carrier hypotheses do not establish systemic F.
  • Fluorescently labeled EDR is not necessarily pharmacokinetically identical to native Pinealon.
Model details and sources
PE-22-28 29 min
Relative model

Legacy 0.48 h is not measured human elimination. Original paper distinguishes PE22-28 from spadin and modified derivatives.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.12 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • IC50 and behavioral effect persistence must not calibrate circulating concentration.
  • No human route/dose concentration-time profile established in reviewed sources.
Model details and sources
DSIP (Delta Sleep-Inducing Peptide) 4 min
Relative model

1984 enzyme-immunoassay: four anesthetized dogs,1–2 mg IV; meanhalf-life 4.0±0.7 min; monkey 2.9 min, rats 2.0±0.54 min. A4 min relative timing anchor must be labeled animal IV.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.016666666666666666 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • C-terminal immunoreactivity is less specific than modern intact-peptide LC-MS.
  • No human SC absolute calibration established; endogenous protein-bound DSIP-like material is different.
Model details and sources
Epithalon (Epitalon) 58 min
Relative model

Legacy 0.96 h is a scenario assumption; effects over days and telomere length are not elimination.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.24 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Epithalamin extract, parentAEDG and modifiedamidate are distinct preparations.
  • No route-matched parent-peptide human concentration calibration established in reviewed sources.
Model details and sources
N-Acetyl Epitalon Amidate 1.4 hour
Relative model

Legacy 1.44 h and a claimed extension over parent 0.96 h are unsupported numerical assumptions.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.36 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • The supplier identity declaration is not a PK study.
  • Do not assume a 1.5x half-life multiplier from chemical end-capping.
Model details and sources
Cartalax 4.1 hours
Relative model

Legacy 4.08 h is an unverified scenario timescale; no concentration-time sampling in the inspected experiment.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • In-vitro assay concentration is not Cmax.
  • Cartilage-patent claims do not establish a clinically measured half-life.
Model details and sources
Chonluten 4.1 hours
Relative model

Legacy 4.08 h remains an assumed timescale; inflammatory marker changes do not supply elimination.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Oral capsule directions do not establish peptide bioavailability.
  • Do not borrow kinetics from unrelated bronchial peptide mixtures.
Model details and sources
Cortagen 4.1 hours
Relative model

Legacy 4.08 h is unverified; five consecutive treatment days do not imply any particular half-life.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Cortagen tetrapeptide is not Cortexin brain extract.
  • Clinical-effect assertions in an introduction are not concentration measurements.
Model details and sources
Livagen 4.1 hours
Relative model

Legacy 4.08 h has no measured human timing support in inspected originals.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Tissue specificity in culture cannot provide systemic exposure or F.
  • Do not convert a suggested course length into elimination timing.
Model details and sources
Ovagen 4.1 hours
Relative model

Legacy 4.08 h remains an assumption; the patent has no verified plasma PK row used here.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Ovagen is also a veterinaryFSH product name; that is not EDL peptide evidence.
  • Animal kidney outcomes and small patent-use examples cannot calibrate human blood concentrations.
Model details and sources
Prostamax 4.1 hours
Relative model

Legacy 4.08 h is an assumed timescale; the 0.05 ng/mL tissue-culture concentration is not a plasma peak.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not mistake cultured human donor cells for an administered-human study.
  • No route-matched human PK established in reviewed sources.
Model details and sources
Testagen 4.1 hours
Relative model

Legacy 4.08 h is unverified; fluorescent-peptide uptake does not establish native peptide elimination.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not equate material-science KEDG adsorption or DNA binding with systemic exposure.
  • No human exogenous-peptide calibration established in reviewed sources.
Model details and sources
Vesugen 4.1 hours
Relative model

Legacy 4.08 h is an assumption; no timed parent-peptide plasma data in inspected originals.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not substitute activity duration or donor-cell aging endpoints for elimination.
  • No route-specific F established.
Model details and sources
Vilon 4.1 hours
Relative model

Legacy 4.08 h is an assumed timescale, not measured elimination.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.02 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • VilonKE, ThymogenEW and Thymalincomplex are not interchangeable.
  • Culture concentrations and immune-marker changes are not blood exposure.
Model details and sources
Melanotan I (Afamelanotide) 1.2 hour
Relative model

The illustrative 1.2 h value is inside the human SC solution terminal range of 0.8–1.7 h; reported absorption half-lives were 0.07–0.79 h (Ugwu 1997).

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.3 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Historical 50% availability contradicts the small human study; it should not be presented as measured.
  • No absolute concentration is inferred from a small-sample, weight-normalized clearance range.
  • Pigmentation lasting weeks is not the drug plasma half-life.
Model details and sources
Melanotan II 2.4 hours
Relative model

The historical 2.4 h value remains an illustrative timing assumption, not a confirmed human terminal half-life.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.6 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not borrow bremelanotide parameters simply because the molecules are related.
  • Erection duration is a pharmacodynamic outcome, not plasma half-life.
  • Failure to recover a human PK dataset is an evidence gap, not proof that no study can exist.
Model details and sources
PT-141 (Bremelanotide) 2.7 hours
Model-derived

Derived from the published model rates. Vyleesi bremelanotide acetate solution/autoinjector; Subcutaneous abdomen. Fixed 74.5 kg premenopausal woman with HSDD; eGFR 95.22 mL/min/1.73m².

Model details and sources
Oxytocin 4 min
Relative model

Historical 4.32 min is an illustrative selection inside the label plasma range of 1–6 min; it is not a study mean. Pregnancy and lactation change clearance.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.018 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not infer an IU-to-mass conversion.
  • The assumed 10% availability is not a measured product value.
  • Intranasal central delivery and peripheral plasma exposure are not interchangeable.
Model details and sources
Alprostadil (PGE1) 1 min
Relative model

A 1 min relative timing assumption is an upper boundary of the reported rapid IV metabolic half-life, not a measured intracavernosal tissue half-life or erection duration.

  • Absorption half-life is assumed to be one quarter of the slower timescale (0.004166666666666667 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Never use endogenous baseline 96 pg/mL as a dose-derived peak.
  • A relative systemic timing illustration does not model local tissue exposure or erection duration.
  • The route extrapolation must be explicit.
Model details and sources
L-Carnitine (Injectable) 17.4 hours
Relative model

Label apparent terminal half-life of 17.4 h is from uncorrected plasma after 20 mg/kg IV over 3 min; distribution half-life is 0.585 h. Endogenous baseline affects the terminal estimate. This is not a verified IM/SC tail.

  • Absorption half-life is assumed to be one quarter of the slower timescale (4.35 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Do not borrow an oral steady-state peak for injection.
  • Label clearance of 4 L/h and terminal 17.4 h include baseline and do not suffice for an exogenous-only model.
  • The SC/IM 70% availability assumption is unsupported.
Model details and sources
NAD+ (Nicotinamide Adenine Dinucleotide) 12 hours
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (3 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Infusion is not a bolus, oral or SC formulation. Endogenous baseline and rapid uptake/metabolism prevent assigning one observed mixture response as a per-dose Cmax. The 12-hour timing remains illustrative.
Model details and sources
SLU-PP-332 4.8 hours
Relative model

Retained only as an explicit mathematical timing assumption; not a verified human half-life. No concentration-unit amplitude is supported.

  • Absorption half-life is assumed to be one quarter of the slower timescale (1.2 h); it is not a measured absorption parameter.
  • A single 1-unit input has a peak of 1 relative unit; scaling and repeated-dose addition are mathematical assumptions. This normalization is independent of the example dose.
  • Reviewed evidence does not establish the catalog’s 4.8-hour human half-life or bioavailability. No absolute human Cmax was verified.
Model details and sources

Legacy detection ranges are withheld pending source and assay verification. Half-life does not establish a negative-test date. Educational use only — not medical advice.