Peptides Shelf Life
Lyophilized (dry) peptides
Room temp (short term): weeks
Refrigerated (2–8°C): 12–36 months
Frozen (-20°C): 3–5+ years
As long as they stay sealed, dry, dark, and cold.
Reconstituted peptides (with bac water)
Refrigerated: 14–30 days (official/conservative)
Handled very cleanly: 6–8 weeks
Best-case, low punctures: up to ~90 days (potency slowly declines)
Why the big difference
Dry = no water → very stable
Liquid = water + air → slow chemical breakdown + sterility risk
Bottom line
Dry: plan on 1–3 years in the fridge
Reconstituted: 1 month safe, 2 months common, 3 months max if pristine
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Peptides Shelf Life
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