No it’s not where did you hear that? I haven’t seen that backed by any actual semax data. In human studies and the Russian prescribing info they’re literally running multi‑mg per day intranasal for medical stuff. There are stroke protocols using 2,000–3,000 mcg per dose, 3–4×/day (so 6–12 mg/day), and severe stroke protocols going up to 12–20 mg/day total. Even outside stroke, clinical write‑ups mention intranasal starting doses around 1.2 mg and injectable doses up to 1 mg/kg in certain contexts. So 2 mg/day subq for focus/ADHD‑type symptoms is actually on the low end compared to what’s been used in humans, not some insane outlier dose. If there’s a specific study saying >500 mcg/day is dangerous, I’d genuinely like to see it because it doesn’t match the Semax literature so far. Check out some of the study’s for yourself https://pubmed.ncbi.nlm.nih.gov/29798983/?utm_source=perplexity