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Dulaglutide (Trulicity)

Also called Trulicity · Dula

Trulicity is a once-weekly diabetes injection used to lower blood sugar. Some people also lose weight, but it is not a dedicated weight-loss medicine; its benefits and dose choices should be judged in the context of diabetes care.

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Dosage & duration

US adult Trulicity label; pediatric dosing is different.

Adult starting dose

Product label
Dose
0.75 mg
How often
Once weekly, under the skin
How long
Ongoing treatment

May increase to 1.5 mg after four weeks; no fixed course length.

Sources: 1

Further adult dose increases

Product label
Dose
1.5 mg increments; maximum 4.5 mg
How often
Once weekly
How long
At least four weeks at the current dose before another increase

Only when additional blood-sugar control is needed and under the prescribing plan.

Sources: 1

This explains the label, not how to switch from another GLP-1.

More quick facts
Main use
Type 2 diabetes
Sources : 1 · 2
Schedule
Once weekly
Sources : 1 · 2
Dose comparison
Not mg-for-mg with Ozempic
Sources : 1 · 2

Why people look into it

With Trulicity, look beyond the scale

  • Blood sugar

    Diabetes control is the main treatment target.

  • Weight change

    Some people lose weight; the response varies.

  • Daily tolerability

    Stomach symptoms and dehydration can get in the way.

Weight is one part of diabetes care, not the only measure of treatment. Sources and context
In this guide

Why people take it

Dulaglutide helps manage type 2 diabetes and can reduce major cardiovascular events in adults with type 2 diabetes who have established cardiovascular disease or multiple risk factors. Weight changes are an additional consideration, not its only purpose.

How it compares with Ozempic

Both are weekly GLP-1 injections, but their milligram amounts are not interchangeable. A move between products needs a new prescription plan rather than a same-number substitution.

What to watch for

Nausea, diarrhea and vomiting can make treatment difficult. Ongoing vomiting can cause dehydration. Low blood sugar is more likely with insulin or a sulfonylurea; the clinician may need to change those medicines. The label excludes people with a personal or family history of medullary thyroid cancer or MEN2.

Model details: Dulaglutide (Trulicity) · estimated

How to read this estimate

Estimated from study endpoints; the curve between measurements is reconstructed. Compare amounts and timing in mg.

A concentration estimate reconstructed from the stated source dose and timing.

Assumptions, calculation and sources

Dulaglutide SC study NCT01667900, single-dose crossover Part A.. subcutaneous. Healthy Chinese participants, Part A1.5mg group n=11..

dulaglutide: estimated concentration in plasma (ng/mL).

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

Calibration dose
1.5 mg
Reported calibration peak
81.5 ng/mL
Peak timing used
48 hours
Terminal half-life used
82.9 hours
Reconstructed absorption rate
0.04197528 /hour
  • Observed extravascular concentrations already contain bioavailability; do not multiply by legacy F or add an independently assumed F.
  • Dose scaling and repeated-dose superposition use fixed parameters; the example dose does not calibrate the curve.
  • Chosen single-dose healthy-cohort half-life differs from broader label and diabetes cohorts.
  • Linear1.5mg scaling across all UI doses is an approximation; preserve source scope.
  • Endpoint-based shape overestimates finite-window AUC by15.09%; do not call this exact concentration-profile reproduction.

Estimate dulaglutide-source-estimate-2026-10 · version 1

Common questions

Is Trulicity approved specifically for weight loss?

No. Its US indications concern type 2 diabetes and cardiovascular risk in eligible adults with type 2 diabetes.

Is 4.5 mg the starting dose?

No. The adult label begins at 0.75 mg weekly and uses gradual increases when needed.

Sources Labels, studies and notes behind this guide

Catalog evidence: Human clinical trials. This describes the type of evidence, not a clinical review of every claim.

Summary and fact source checks: 2026-10-07. This records source checking, not medical review of the whole page.

Notes on the quick facts

Main use
Weight loss is possible but not its approved weight-management indication.
Schedule
Higher doses are introduced gradually, not all at once.
Dose comparison
Different molecules have different dose scales.

Keep reading

Trulicity vs Ozempic: Weight Loss, Doses and Side Effects

4 min read
Related compounds and examples

Related compounds

Semaglutide Injection (Ozempic/Wegovy)

Semaglutide can reduce hunger and food intake, helping people lose weight. Wegovy injections are prescribed for weight management; Ozempic injections treat type 2 diabetes. Both are taken weekly, with gradual dose increases to help manage digestive side effects.

Semaglutide Oral (Rybelsus)

Oral semaglutide offers a daily tablet option for adults with type 2 diabetes who want to avoid injections. The morning routine matters: food, drink and other tablets affect absorption, and different semaglutide products cannot be compared milligram for milligram.

Tirzepatide (Mounjaro)

Tirzepatide can reduce appetite and food intake, helping people lose weight and improve blood-sugar control. In the US, Zepbound is the weight-management brand and Mounjaro treats type 2 diabetes. Both are weekly injections; digestive side effects and the right dose for the treatment goal are the main practical trade-offs.

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