We dont have long-term safety data
A patient trying to heal from an injury still needs a proper diagnosis, appropriate rehabilitation, progressive loading, adequate protein, sleep, hydration, metabolic support, and realistic timelines
Freeze individual doses (controversial) Some users pre-load syringes and freeze them individually
Synergy is inferred from the individual mechanisms, not demonstrated in combination: GHK-Cu: Cosmetically Focused Clinical Data Split-face human dermatology trials on wrinkle depth and skin density (n usually under 50 per arm) Microarray gene mapping (4,000+ genes)
Thymosin Beta-4 Improves Endothelial Function and Reparative Potency of Diabetic Endothelial Cells Differentiated From Patient Induced Pluripotent Stem Cells, Su L, Kong X, Loo S, Gao Y, Liu B, Su X, Dalan R, Ma J, Ye L, Stem Cell Research & Therapy, 2022 Jan 10;13(1):13
This led to its popularity for metabolism and body composition, with users reporting sustained weight loss and energy gains