Oxiracetam
Oxiracetam
Oxiracetam is a synthetic nootropic belonging to the racetam family, structurally derived from piracetam with the addition of a hydroxyl group that enhances its potency and bioavailability. It is primarily used to support memory consolidation, logical reasoning, and verbal fluency, with particular interest in its potential to slow cognitive decline in neurological conditions. Research suggests it is approximately 2-5 times more potent than piracetam, making it a popular choice among cognitive enhancement enthusiasts.
Mechanism of Action
Oxiracetam is believed to modulate AMPA-type glutamate receptors, enhancing synaptic plasticity and long-term potentiation, which are critical processes underlying learning and memory formation. It also stimulates the release and turnover of acetylcholine in the hippocampus and cortex, and may facilitate phosphatidylcholine synthesis, supporting neuronal membrane integrity and cholinergic neurotransmission. Additionally, it appears to enhance the activity of PKC (protein kinase C) signaling pathways involved in cognitive processing.
Evidence by Health Goal(11 goals)
Dosing Protocols
With meals, split into morning and early afternoon doses to avoid potential sleep disruption
Cycle: 8 weeks on, 2-4 weeks off
Start at the lower end of 1200mg/day split into two 600mg doses and titrate upward based on response. Taking with a choline source such as alpha-GPC (300-600mg/day) is strongly recommended to prevent choline-depletion headaches and may enhance cognitive effects.
Safety & Side Effects
Oxiracetam has a generally favorable safety profile based on clinical studies, with no serious adverse events reported at standard doses, though long-term human safety data remains limited. It is sold as an unregulated supplement in the United States but is a prescription-only or controlled substance in several countries including Italy and Mexico, so users should verify local regulations before purchasing.
Possible Side Effects
- !Headache due to increased acetylcholine demand and choline depletion
- !Insomnia or sleep disturbance if taken in the late afternoon or evening
- !Irritability or mood changes, particularly at higher doses
- !Gastrointestinal discomfort including nausea at doses above 2400mg/day
- !Dizziness or lightheadedness, especially when initiating use
- !Mental overstimulation or feeling of cognitive restlessness
- !Mild nervousness or anxiety in sensitive individuals
Interactions
- -May potentiate the effects of stimulants such as caffeine or amphetamines, increasing risk of overstimulation or anxiety
- -Concurrent use with cholinesterase inhibitors (e.g., donepezil) may cause excessive cholinergic activity, leading to nausea or bradycardia
- -May reduce the sedative efficacy of CNS depressants including benzodiazepines by enhancing excitatory neurotransmission
- -Combining with other racetams (e.g., piracetam, aniracetam) increases choline demand and may compound headache risk without a proportional benefit
- -Theoretically may enhance anticoagulant effects of blood thinners - use caution and monitor with warfarin or similar agents
Cost & Where to Buy
Cost varies significantly by vendor, capsule vs. bulk powder format, and purity certification. Bulk powder from reputable suppliers is the most economical option, while pre-measured capsules from established nootropic brands command a premium. Budget should also factor in choline supplementation costs if stacking.
Search on Amazon