Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Sabroxy (Oroxylum indicum) | Vinpocetine | |
|---|---|---|
| Category | Nootropics | Nootropics |
| Standard Dose | — | 5-20 mg 2-3 times daily (15-60 mg/day total) |
| Timing | — | With food (bioavailability increases 60-100% with food). Split into 2-3 doses due to short half-life (~2-3 hours). |
| Cycle Duration | — | Cycles of 8-12 weeks on, 4 weeks off; or ongoing with periodic reassessment. Clinical trials typically run 12-16 weeks. |
| Evidence Level | Emerging | moderate_human |
Contains oroxylin A — a flavonoid that inhibits PDE (phosphodiesterase), increases BDNF, and modulates dopamine signaling. Enhances focus and motivation without stimulant side effects. Also acts as a mild MAO-B inhibitor, preserving dopamine levels.
Semi-synthetic derivative of vincamine (from Vinca minor/periwinkle) that selectively inhibits phosphodiesterase type 1 (PDE1) in cerebral vasculature, increasing cAMP and cGMP levels to promote vasodilation and restore regional cerebral blood flow without significant systemic blood pressure effects. Reduces intracellular calcium in smooth muscle cells and neurons. Inhibits voltage-gated sodium channels, providing neuroprotection against excitotoxicity. Potent anti-inflammatory agent via direct inhibition of IKK, attenuating NF-kB signaling. Downstream CREB and SRF phosphorylation promotes expression of plasticity-related genes.
5-20 mg 2-3 times daily (15-60 mg/day total)
With food (bioavailability increases 60-100% with food). Split into 2-3 doses due to short half-life (~2-3 hours).
Cycles of 8-12 weeks on, 4 weeks off; or ongoing with periodic reassessment. Clinical trials typically run 12-16 weeks.
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