fake bpc-157 The world’s biggest online retailer, Amazon, was found to be selling peptides ‘not fit for human consumption’ by ITV’s Tonight programme., Originally obtaining drugs like these meant a black-market Peptide BPC-157 - Does It

Recalls & Warnings August 15, 2020 FTC Warns 20 More Companies for Coronavirus Claims On August 14, 2020, the FTC announced that it sent warning letters to 20 companies for selling products such as vitamin C, hydrochloroquine, omega 3, and melatonin with unsupported claims that they can treat coronavirus (COVID-19)

Companies get around this by labeling it as a "research chemical not for human consumption." This means the product is completely unregulated, and you have no way of knowing if it's pure, sterile, or even contains the correct substance

Journal of Molecular Medicine (2017) 3

For a compound you are injecting into your body, that gap is not trivial