Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Aniracetam | Ginkgo Biloba | |
|---|---|---|
| Category | Nootropics | Nootropics |
| Standard Dose | 750-1500 mg/day divided into 2-3 doses | 120-240 mg/day of standardized extract (24% flavone glycosides, 6% terpene lactones) divided into 2-3 doses |
| Timing | With fat-containing meals (fat-soluble compound; bioavailability increases significantly with dietary fat) | With or without food. Split into 2-3 doses throughout the day. Effects may take 4-6 weeks to manifest. |
| Cycle Duration | Cycles of 8-12 weeks on, 4 weeks off | Ongoing; no cycling required. Clinical trials typically run 22-26 weeks. |
| Evidence Level | moderate_human | strong_human |
Potent positive allosteric modulator of AMPA receptors with 5-10x the potency of piracetam, slowing both channel closing rate and microscopic desensitization rates. Also modulates metabotropic glutamate receptors (mGluRs), activates nicotinic acetylcholine receptors, and indirectly boosts dopaminergic and serotonergic neurotransmission, conferring anxiolytic properties.
750-1500 mg/day divided into 2-3 doses
With fat-containing meals (fat-soluble compound; bioavailability increases significantly with dietary fat)
Cycles of 8-12 weeks on, 4 weeks off
Standardized extract (EGb 761) contains flavonoid glycosides (24%) and terpene lactones (6% — ginkgolides A/B/C and bilobalide) that act through multiple pathways: potent free radical scavenging and inhibition of membrane lipid peroxidation; antagonism of platelet-activating factor (PAF) via ginkgolides; enhancement of cerebral blood flow through nitric oxide-mediated vasodilation and reduced blood viscosity; and increased prefrontal dopamine and acetylcholine release via acylated flavonol glycosides. Bilobalide provides direct neuroprotection against excitotoxicity and mitochondrial dysfunction.
120-240 mg/day of standardized extract (24% flavone glycosides, 6% terpene lactones) divided into 2-3 doses
With or without food. Split into 2-3 doses throughout the day. Effects may take 4-6 weeks to manifest.
Ongoing; no cycling required. Clinical trials typically run 22-26 weeks.
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