Comparison
Noopept vs Selank
Noopept
Russian-developed proline-containing dipeptide ~1000x more potent than piracetam by weight. Often grouped with racetams.
Selank
Russian heptapeptide analog of tuftsin. Anxiolytic without sedation. Intranasal.
| Field | Noopept | Selank |
|---|---|---|
| Category | peptide | peptide |
| Dose range | 10–30mg | 0.4–0.9mg |
| Half-life | 0.5h | — |
| Onset | 20min | — |
| Evidence | EVIDENCEB | EVIDENCEC |
| Safety | ●●●●○ | ●●●○○ |
| Legal (US) | USUnscheduled | USResearch chemical |
| PubMed refs | 90 | 50 |
The comparison in plain English
Auto-generated from dataNoopept and Selank are both in the peptide category respectively. Noopept Russian-developed proline-containing dipeptide ~1000x more potent than piracetam by weight. Selank Russian heptapeptide analog of tuftsin.
Bottom line
Noopept (evidence B, safety 4/5) has a weaker evidence base than Selank (evidence C, safety 3/5). Noopept has the slightly cleaner safety profile. For users new to either, the higher-evidence option is the safer first try.
Choose Noopept if
Noopept is the better fit when your goal aligns with its mechanism (Increases BDNF and NGF expression in the hippocampus and prefrontal cortex) and the dose range (10–30mg) suits your protocol. Half-life is 0.5h.
Choose Selank if
Selank is the better fit when your goal aligns with its mechanism (Heptapeptide structurally analogous to tuftsin, an endogenous tetrapeptide with immunomodulating activity) and the dose range (0.4–0.9mg) suits your protocol. Half-life is —h.