Also got a letter from Customs one time. Didn’t think much about it till the wife and I went out of the country on vacation. On our way back home customs had me flagged. Was pulled to the side for a bag check. I asked the guy what made me get flagged. He asked if I had ever tried to buy steroids. Of course I said no but…
in terms of legality it really comes down to is it DEA scheduled vs not. if its not scheduled nobody gives a shit and nationally won’t do anything. international orders might get seized worst case due to import restrictions etc. not sure why people keep asking if sarms or peptides are legal, a simple web/ai search will do it