Which non FDA (United States Food and Drug Administration) approved peptides, such as BPC 157 (Body Protection Compound 157) and TB 500 (Thymosin Beta 500), are likely legitimate for medical use under strict supervision? Most people hear not FDA approved and immediately think unsafe or ineffective but the reality is a lot more about economics than science. If something can't be patented, there's little incentive to Public advisory Think twice before injecting peptides bought online: unauthorized products can seriously harm you Deep Dive: Regulatory Status of Popular Compounded Peptides Holt Law FDA's Overreach on Compounded Peptides