Proper Peptide Storage

Lyophilized (Powder) Storage

Before mixing, peptides in their powder form are quite stable, but they still have enemies: Heat, Light, and Moisture.

• Room Temp: Stable for weeks to months (away from direct sunlight).
• Refrigerator (2-8°C): Stable for 1-2 years.
• Freezer (-20°C): Stable for years. This is best for long-term storage of stockpiles.

Reconstituted (Liquid) Storage

Once mixed with bacteriostatic water, the clock starts ticking. The peptide structure becomes flexible and prone to breaking down (hydrolysis).

The Golden Rules:

1. Always Refrigerate: Keep the vial at 2-8°C (36-46°F). Never freeze reconstituted peptides (the freezing/thawing process destroys the delicate molecules).
2. Keep it Dark: UV light can degrade peptides. Keep the vial in a box or the back of the fridge.
3. Minimize Agitation: Don't shake the vial.

How Long Do They Last?

It varies by compound, but a general rule of thumb for reconstituted peptides in the fridge:

• GLP-1s (Semaglutide, Tirzepatide): Very stable. Up to 56 days (8 weeks) if handled well, though 4 weeks is the standard recommendation.
• GHK-Cu / BPC-157: Quite stable. 4-6 weeks.
• HGH / IGF-1: Very fragile. 2-4 weeks max.