Quick answer
How long does reconstituted peptide last?
Stored properly in the fridge, a reconstituted peptide typically holds potency for around two months, declining gradually after that.
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Storage
Keep it refrigerated (2–8 °C), protected from light, and avoid repeated freeze-thaw cycles. Bacteriostatic water (with its preservative) gives a longer usable window than plain sterile water.
When to discard
Discard if the solution turns cloudy, changes colour or shows particles. Sealed, dry lyophilized powder lasts far longer — often 2+ years frozen.
Frequently asked questions
Can I freeze reconstituted peptide?
Brief freezing is sometimes referenced for longer storage, but repeated freeze-thaw degrades peptides. Refrigeration and use within a couple of months is the common reference.