How long do peptide last in the fridge? How should peptides be stored? Peptides can stay potent for up to 6 months, you will want to store them in a refrigerator. By Stephanie Butler|2022-09-15T23:28:19-04:00September 15, 2022|Peptides|0 Comments Share This Story, Choose Your Platform! FacebookXRedditLinkedInWhatsAppTumblrPinterestVkXingEmail