Head-to-head
Semax vs Selank
Side by side from the same data: half-life, evidence tier, research amounts, common schedule, and every decay curve on one chart.
How they differ
A plain-language read of what actually sets them apart. Reference only, not medical advice.
Two short Russian nasal-spray peptides, both gone from the blood within minutes. Semax leans toward focus and alertness; Selank leans toward calm. Both have some human use behind them, but the evidence is mostly Russian-language studies rather than large Western dosing trials.
Side by side
Every figure is drawn from this site's own compound data — the same numbers on each compound's page.
These amounts and schedules are figures discussed in research and community reports, shared for learning — not a recommendation and not medical advice. A step-by-step dosing schedule exists only where a human trial backs it; the evidence tier tells you which.
Decay curves, overlaid
Every compound on one chart — something the single-compound pages cannot show.
Each line is scaled to that compound's own first dose, so the chart shows how each one builds up over time — not how the compounds' doses compare to one another, which these different molecules share no common unit for.
How they combine
Where two of these have a documented pairing in this reference.
Educational reference on commonly-discussed combinations, not medical advice. Combining compounds can change how each behaves — read this as a prompt to research, not a clearance.