In a 2024 review of three peptides, the FDA noted side effects like increased heart rate, chest tightening, headache, nausea, diarrhea, and elevated liver enzymes, as well as skin irritation and pain at the injection site
By Jaimy Lee If the FDA allows the reclassification of seven peptides under consideration, that means compounding pharmacies can legally produce them A group of independent advisers to the FDA is meeting Thursday and Friday to vote whether to reclassify seven peptides, which would broaden their availability in the U.S
Public COAs Certificates of Analysis published openly and linked to each product
Topical GHK-Cu serum shelf life Pre-made commercial serums: Usually 6-12 months unopened 3-6 months after opening Check manufacturer recommendations Refrigerate after opening extends life DIY serums (mixing powder with carrier): Shorter shelf life than commercial 2-4 weeks typical (no preservatives) Must refrigerate Discard if color changes Factors affecting topical shelf life: Preservatives: Extend significantly pH: Neutral pH more stable Carrier: Some better than others (hyaluronic acid, glycerin good) Storage: Cool, dark, sealed Contamination: Sterile technique critical Best practices for topical GHK-Cu: Buy small bottles (use within 3-6 months) Refrigerate after opening Don't double-dip (pour into hand, don't touch dropper to skin) Watch for color changes (brown = oxidized) Replace every 6 months even if looks fine See our how to reconstitute peptides , bacteriostatic water for peptides , and how long reconstituted peptides last in fridge
