Therapeutic peptides can be categorized into prescription, gray market, and black market categories based on safety and efficacy.

“a lot of what's happening with applied therapeutic peptide biology falls into one of three categories there are peptides that are being prescribed by physicians so these are prescription peptides for specific purposes these are FDA approved there are other peptides that reside in kind of a gray market area you can purchase them online but the safety and efficacy of those peptides is a bit questionable in some cases very questionable and I'll give you some filters to determine uh which category certain peptides fall into and then of course there's the black market peptides it is possible to buy peptides online through any number of different sources and of course I do not suggest people purchase Black Market peptides it's very clear that a lot of them are contaminated with things that both in the short term but especially in the long term can be problematic”