Why do reconstituted peptides last about 28 days?

That window is tied to bacteriostatic water, which contains about 0.9 percent benzyl alcohol as a preservative. The preservative reliably holds back microbial growth for roughly 28 days, which is why multi-use vials are typically dated to that point. After that, contamination risk rises even with refrigeration.

Educational use only. This database summarizes published research and is not medical advice. Where a dose appears it is a record of what a trial or clinic ran, or what people describe doing, with its source attached. Nothing here is a recommendation for personal use.

Part of shelf life after reconstitution. How long a peptide lasts once it is mixed, and how to store it.