Brain Health & Memory

Semax and Selank are offered together, but they come from different research lines and act on different things.

Semax is a synthetic analog of ACTH(4-10), a fragment of adrenocorticotropic hormone that lacks the parent hormone's hormonal activity. Research interest has centered on brain-derived neurotrophic factor expression and on measures of cognitive processing in animal and small human studies — mechanism-level work, not outcome-level proof.

Selank is a synthetic analog of tuftsin, a short immune peptide, modified for stability. Research interest there centers on anxiolytic signaling and on interactions with GABAergic and serotonergic pathways. The two are studied and used together because their signals are complementary, not because a combination is stronger.

Some things belong with a physician, not a peptide. New or progressive memory change is a symptom that deserves a real workup — thyroid function, B12, medications, sleep, mood, and cognitive testing all sit ahead of anything offered here. Anxiety and depression have established treatments with decades of evidence behind them, and starting somewhere else can cost years.

If the request is appropriate, the process is the same as anywhere on Promise: an intake that is its own clinical questionnaire, covering your history, current medications, and what you are actually experiencing; a licensed provider's review; and, if prescribed, a medication compounded and dispensed by a licensed U.S. pharmacy, with instructions and follow-up. If what you are describing is more about stress and sleep than cognition, calming and stress relief is the more appropriate place to start.