Compound names I see, and the evidence I can’t find

I’ve been on a GLP-1 for about 14 months and lift twice a week, so I notice when a supplement thread promises recovery, focus, or body-comp changes. Over 11 weeks I’ve read maybe 30 posts about Dihexa, Cerebrolysin, P-21, IGF-1 LR3, Pinealon, SLU-PP-332, and myostatin inhibitors. The pattern: strong certainty, vague timelines, and almost nobody says what else changed. I’m not anti-anything; I just want specifics. If you’ve used any of these, what did you actually track, and did it hold up when sleep, calories, and training weren’t also changing? Did anything make you stop?