Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| DMAE (Dimethylaminoethanol) | Ginkgo Biloba | |
|---|---|---|
| Category | Nootropics | Nootropics |
| Standard Dose | 150-400 mg/day (as DMAE bitartrate, typically 37% DMAE) | 120-240 mg/day of standardized extract (24% flavone glycosides, 6% terpene lactones) divided into 2-3 doses |
| Timing | Morning. 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 strict cycling required | Ongoing; no cycling required. Clinical trials typically run 22-26 weeks. |
| Evidence Level | animal_plus_anecdotal | strong_human |
Structural analog of choline that crosses the BBB more readily than choline itself. Paradoxically increases choline availability not by serving as a direct precursor to acetylcholine, but by inhibiting choline metabolism in peripheral tissues, thereby increasing circulating choline available for brain uptake. Also acts as a free radical scavenger and membrane stabilizer. Reduces lipofuscin accumulation in neuronal cells, an age pigment associated with cellular aging.
150-400 mg/day (as DMAE bitartrate, typically 37% DMAE)
Morning. With or without food.
Ongoing; no strict 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.
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