Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Aniracetam | Gotu Kola (Centella asiatica) | |
|---|---|---|
| Category | Nootropics | Nootropics |
| Standard Dose | 750-1500 mg/day divided into 2-3 doses | 500-1000 mg/day of standardized extract (35-45% triterpenes) or 750-1500 mg/day of whole herb extract |
| Timing | With fat-containing meals (fat-soluble compound; bioavailability increases significantly with dietary fat) | Morning or split morning/afternoon. With or without food. Acute mood effects (alertness, reduced anger) noted within 1 hour of dosing. |
| Cycle Duration | Cycles of 8-12 weeks on, 4 weeks off | Ongoing; traditional use suggests no cycling required. Clinical trials run 2-6 months. |
| Evidence Level | moderate_human | moderate_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
Pentacyclic triterpenes — asiaticoside, madecassoside, asiatic acid, and madecassic acid — provide neuroprotection through multiple mechanisms: inhibition of acetylcholinesterase activity and enhancement of cholinergic transmission; reduction of phospholipase A2 (PLA2) activity to attenuate neuroinflammation; protection against beta-amyloid aggregation and tau hyperphosphorylation; and upregulation of BDNF to promote neuronal growth and synaptic plasticity. Asiaticoside enhances collagen synthesis and wound healing, while asiatic acid activates the MAPK/ERK pathway to promote neurite outgrowth.
500-1000 mg/day of standardized extract (35-45% triterpenes) or 750-1500 mg/day of whole herb extract
Morning or split morning/afternoon. With or without food. Acute mood effects (alertness, reduced anger) noted within 1 hour of dosing.
Ongoing; traditional use suggests no cycling required. Clinical trials run 2-6 months.
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