Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Gotu Kola (Centella asiatica) | Phenylpiracetam | |
|---|---|---|
| Category | Nootropics | Nootropics |
| Standard Dose | 500-1000 mg/day of standardized extract (35-45% triterpenes) or 750-1500 mg/day of whole herb extract | 100-300 mg/day divided into 1-2 doses |
| Timing | Morning or split morning/afternoon. With or without food. Acute mood effects (alertness, reduced anger) noted within 1 hour of dosing. | Morning or early afternoon; avoid evening use due to stimulant effects. Take with or without food. |
| Cycle Duration | Ongoing; traditional use suggests no cycling required. Clinical trials run 2-6 months. | Use sparingly — tolerance develops rapidly. Best cycled 2 weeks on, 2 weeks off, or reserved for acute-need situations. |
| 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.
Atypical dopamine reuptake inhibitor with additional phenethylamine-like stimulatory properties. Increases the density of acetylcholine, NMDA, GABA, and dopamine receptors in the brain. The phenyl group addition to the piracetam backbone enables blood-brain barrier penetration at 20-60x greater potency than piracetam, with added psychostimulant and cold-tolerance properties.
100-300 mg/day divided into 1-2 doses
Morning or early afternoon; avoid evening use due to stimulant effects. Take with or without food.
Use sparingly — tolerance develops rapidly. Best cycled 2 weeks on, 2 weeks off, or reserved for acute-need situations.
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