Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| Phenibut | Sabroxy (Oroxylum indicum) | |
|---|---|---|
| Category | Nootropics | Nootropics |
| Standard Dose | 250-750 mg as needed, maximum 1-2 times per week (for educational context — carries significant dependence risk) | — |
| Timing | On an empty stomach (food significantly reduces absorption). Onset 2-4 hours. Effects last 4-8 hours with residual effects up to 24 hours. Half-life approximately 5.3 hours. | — |
| Cycle Duration | STRICTLY intermittent use only — maximum 1-2 times per week. NEVER use daily for more than 1 week. Tolerance develops within days, leading to dose escalation and dependence. | — |
| Evidence Level | moderate_human | Emerging |
Beta-phenyl derivative of GABA that crosses the blood-brain barrier (unlike GABA itself) due to the addition of a phenyl ring. Acts as a full agonist at GABA-B receptors with 30-68x lower affinity than baclofen, requiring correspondingly higher doses. Also binds to and blocks alpha-2-delta subunit-containing voltage-dependent calcium channels (VDCCs), making it a gabapentinoid similar to gabapentin and pregabalin. At low concentrations, mildly increases dopamine levels in the brain, providing stimulatory and nootropic effects alongside anxiolysis. Weak agonist activity at GABA-A receptors at higher doses.
250-750 mg as needed, maximum 1-2 times per week (for educational context — carries significant dependence risk)
On an empty stomach (food significantly reduces absorption). Onset 2-4 hours. Effects last 4-8 hours with residual effects up to 24 hours. Half-life approximately 5.3 hours.
STRICTLY intermittent use only — maximum 1-2 times per week. NEVER use daily for more than 1 week. Tolerance develops within days, leading to dose escalation and dependence.
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.
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