Safety & side effects

What we know, and the large gaps we do not

Semax has been a Russian prescription medicine since December 1994, which sounds reassuring until you look for the data behind it. There is no publicly accessible pharmacovigilance dataset in the English literature, and no long-term safety study in healthy adults.

It is also not a record of no adverse effects. A Russian follow-up study saw paroxysmal EEG activity after injection, the FDA holds one adverse-event report describing a hospitalization, and FDA reviewers flagged a bleeding-risk concern. This unit separates the mild, commonly reported effects from those signals and from the genuine unknowns, and walks through who should be most cautious. As always, this is education, not medical advice.