Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| CDP-Choline (Citicoline) | Ginkgo Biloba | |
|---|---|---|
| Category | Nootropics | Nootropics |
| Standard Dose | 250-500 mg/day | 120-240 mg/day of standardized extract (24% flavone glycosides, 6% terpene lactones) divided into 2-3 doses |
| Timing | Morning or split morning/afternoon. With or without food. | With or without food. Split into 2-3 doses throughout the day. Effects may take 4-6 weeks to manifest. |
| Cycle Duration | Ongoing; no cycling required | Ongoing; no cycling required. Clinical trials typically run 22-26 weeks. |
| Evidence Level | strong_human | strong_human |
Prodrug that is hydrolyzed to choline and cytidine upon oral ingestion. Choline supports acetylcholine synthesis and phosphatidylcholine membrane repair. Cytidine is converted to uridine, which enhances synaptic membrane synthesis via the Kennedy pathway and upregulates dopamine receptor density. This dual mechanism — cholinergic support plus dopaminergic modulation — is unique among choline sources.
250-500 mg/day
Morning or split morning/afternoon. With or without food.
Ongoing; no cycling required
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.
Take our free assessment to get personalized recommendations based on your health goals, current stack, and biomarkers.
Get Your Free Protocol →or take the assessment →