Peptides Shelf Life
This is general educational information only, not medical advice. Individual responses vary, and anyone with medical conditions or concerns should consult a qualified healthcare professional.
Lyophilized (dry) peptides
Room temp (short term): weeks
Refrigerated (2โ€“8ยฐC): 12โ€“36 months
Frozen (-20ยฐC): 3โ€“5+ years
As long as they stay sealed, dry, dark, and cold.
Reconstituted peptides (with bac water)
Refrigerated: 14โ€“30 days (official/conservative)
Handled very cleanly: 6โ€“8 weeks
Best-case, low punctures: up to ~90 days (potency slowly declines)
Why the big difference
Dry = no water โ†’ very stable
Liquid = water + air โ†’ slow chemical breakdown + sterility risk
Bottom line
Dry: plan on 1โ€“3 years in the fridge
Reconstituted: 1 month safe, 2 months common, 3 months max if pristine
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Christina Brown-Decoteau
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Peptides Shelf Life
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