Should unopened peptides go in the fridge or the freezer?

For short-term storage the fridge is fine. If you expect to store the powder for more than a few months before using it, the freezer is the safer choice. The key is a stable temperature and avoiding repeated freeze-thaw swings, which stress the peptide more than steady cold does.

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 storing unmixed (lyophilized) peptides. How to store the freeze-dried powder before you add any water.