Comparison
Noopept vs Alpha-GPC
Noopept
Russian-developed proline-containing dipeptide ~1000x more potent than piracetam by weight. Often grouped with racetams.
Alpha-GPC
The most bioavailable common choline source. About 40% of an oral dose reaches the brain within an hour, where it serves as substrate for acetylcholine synthesis and as a phospholipid membrane component. The de facto pairing for every racetam stack.
| Field | Noopept | Alpha-GPC |
|---|---|---|
| Category | peptide | cholinergic |
| Dose range | 10–30mg | 300–600mg |
| Half-life | 0.5h | 6h |
| Onset | 20min | 30min |
| Evidence | EVIDENCEB | EVIDENCEA |
| Safety | ●●●●○ | ●●●●● |
| Legal (US) | USUnscheduled | USOTC |
| PubMed refs | 90 | 320 |
The comparison in plain English
Auto-generated from dataNoopept and Alpha-GPC are both in the peptide (peptide) and cholinergic respectively. Noopept Russian-developed proline-containing dipeptide ~1000x more potent than piracetam by weight. Alpha-GPC The most bioavailable common choline source.
Bottom line
Noopept (evidence B, safety 4/5) has a stronger evidence base than Alpha-GPC (evidence A, safety 5/5). Alpha-GPC 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 Alpha-GPC if
Alpha-GPC is the better fit when your goal aligns with its mechanism (Rapidly absorbed and cleaved into choline and glycerophosphate) and the dose range (300–600mg) suits your protocol. Half-life is 6h.