Eric Topol has a more useful summary [1] of the peptides, including which have FDA approval and the health effects. Here's a quote:
"Why have peptides become so popular without data to support the promotional claims? This, in part, reflects the challenge and mistrust of the medical establishment, which worsened during the Covid pandemic, but was already showing strong signs of opposition by the wide adoption of supplements (with a very similar lack of supportive data on efficacy and safety) long before 2020. Ironically, anti-vax individuals are against shots with as rigorous datasets as we’ve ever seen (e.g. >70,000 participants in the initial mRNA Covid vaccines randomized, double-blind, placebo-controlled trials released in late 2020) but happy to get injections of peptides for which there are scant if any data to support their use."
[1]
https://erictopol.substack.com/p/the-peptide-craze