Comparison
Oxiracetam vs Alpha-GPC
Oxiracetam
Water-soluble racetam known for analytical focus and logical reasoning enhancement.
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 | Oxiracetam | Alpha-GPC |
|---|---|---|
| Category | racetam | cholinergic |
| Dose range | 800–2400mg | 300–600mg |
| Half-life | 8h | 6h |
| Onset | 45min | 30min |
| Evidence | EVIDENCEB | EVIDENCEA |
| Safety | ●●●●○ | ●●●●● |
| Legal (US) | USUnscheduled | USOTC |
| PubMed refs | 150 | 320 |
The comparison in plain English
Auto-generated from dataOxiracetam and Alpha-GPC are both in the racetam (racetam) and cholinergic respectively. Oxiracetam Water-soluble racetam known for analytical focus and logical reasoning enhancement. Alpha-GPC The most bioavailable common choline source.
Bottom line
Oxiracetam (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 Oxiracetam if
Oxiracetam is the better fit when your goal aligns with its mechanism (Modulates AMPA and NMDA receptors and stimulates release of excitatory neurotransmitters including glutamate and D-aspartate) and the dose range (800–2400mg) suits your protocol. Half-life is 8h.
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.