Thats part of the problem, says Henry Ellis, a sports medicine surgeon and researcher at the University of Texas, Southwestern, in Dallas, Texas, who has written about BPC-157 for the American Orthopedic Society for Sports Medicine (AOSSM)
GHK-Cu is a naturally occurring copper complex first identified in human plasma
Adding Phentermine to the mix can further overstimulate the system, leading to increased heart rate, anxiety, and other severe symptoms
Yang Y, Dieter MZ, Chen Y, Shertzer HG, Nebert DW, Dalton TP: Initial characterization of the glutamate-cysteine ligase modifier subunit Gclm(-/-) knockout mouse
What's included: Compounded glutathione injection

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