Russian intranasal neuropeptidesNeuropeptideA short peptide molecule that acts as a signalling messenger in the nervous system.
Semax vs Selank
The table compares the compounds’ key data from their entry pages. Open each compound’s full entry for details. Educational content, not medical advice.
| SSemax | SSelank | |
|---|---|---|
| What it is | Russian Rx heptapeptide (ACTH 4-10 analog). Stroke rehab + cognitive enhancement, intranasal spray. | Tuftsin-analog heptapeptide (TKPRPGP). Anxiolytic + cognition without sedation, intranasal. |
| MechanismMechanism of actionThe molecular pathway by which a compound acts in the body (e.g. which receptor or enzyme it binds). | ACTH(4-10) heptapeptide, BDNF-mimicking | Tuftsin analog, GABA + BDNF |
| Half-lifeHalf-lifeThe time for the compound’s plasma concentration to fall by half; indicates how fast it clears and how often it is dosed. | 20-30 min (intranasal) | 20-30 min (intranasal) |
| OnsetOnsetThe time from dosing until a measurable effect appears. | 10-15 min | 5-15 min |
| Legal statusLegal / WADA statusThe compound’s regulatory status (e.g. prescription) and its place on the WADA prohibited-in-sport list. | Russia Rx, EU/USA research | Russia Rx, EU/USA research |
| Full entry | Open → | Open → |
What it is
SemaxRussian Rx heptapeptide (ACTH 4-10 analog). Stroke rehab + cognitive enhancement, intranasal spray.
SelankTuftsin-analog heptapeptide (TKPRPGP). Anxiolytic + cognition without sedation, intranasal.
MechanismMechanism of actionThe molecular pathway by which a compound acts in the body (e.g. which receptor or enzyme it binds).
SemaxACTH(4-10) heptapeptide, BDNF-mimicking
SelankTuftsin analog, GABA + BDNF
Half-lifeHalf-lifeThe time for the compound’s plasma concentration to fall by half; indicates how fast it clears and how often it is dosed.
Semax20-30 min (intranasal)
Selank20-30 min (intranasal)
OnsetOnsetThe time from dosing until a measurable effect appears.
Semax10-15 min
Selank5-15 min
Legal statusLegal / WADA statusThe compound’s regulatory status (e.g. prescription) and its place on the WADA prohibited-in-sport list.
SemaxRussia Rx, EU/USA research
SelankRussia Rx, EU/USA research
Full entry