Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Gotu Kola (Centella asiatica) | Piracetam | |
|---|---|---|
| Category | Nootropics | Nootropics |
| Standard Dose | 500-1000 mg/day of standardized extract (35-45% triterpenes) or 750-1500 mg/day of whole herb extract | 1200-4800 mg/day divided into 2-3 doses |
| Timing | Morning or split morning/afternoon. With or without food. Acute mood effects (alertness, reduced anger) noted within 1 hour of dosing. | With or without food; split doses morning and afternoon to maintain plasma levels |
| Cycle Duration | Ongoing; traditional use suggests no cycling required. Clinical trials run 2-6 months. | Cycles of 8-12 weeks on, 4 weeks off; or ongoing with periodic reassessment |
| Evidence Level | moderate_human | moderate_human |
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.
Positive allosteric modulator of AMPA receptors, binding at a unique site along the dimer interface to reduce desensitization and deactivation. Inhibits N-type calcium channels at clinically relevant CNS concentrations. Enhances membrane fluidity of neuronal phospholipids and modulates neurotransmission across cholinergic and glutamatergic systems.
1200-4800 mg/day divided into 2-3 doses
With or without food; split doses morning and afternoon to maintain plasma levels
Cycles of 8-12 weeks on, 4 weeks off; or ongoing with periodic reassessment
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