Sabroxy (Oroxylum indicum)

Tier 3 — weak evidence · Nootropic · Focus · Dopamine

A bark extract from the Indian trumpet tree, standardised to oroxylin A — a flavonoid that inhibits GABA-A receptors and modulates dopamine reuptake. Emerging as a natural stimulant and focus enhancer in the nootropic community. Animal studies show improved attention and memory. No published human clinical trials. The GABA-A antagonism mechanism means it may lower seizure threshold.

Dose: 100–300 mg/day standardised to 10% oroxylin A; no human clinical trial data exists