A common succulent plant can kill anxiety using a brain pathway that scientists didn't even know was an option.
April 17, 2026
Original Paper
Anxiolytic-like effects of Aptenia cordifolia in zebrafish: evidence of a non-GABAergic mechanism and dissociation from ephedrine content
SSRN · 6591354
The Takeaway
Most anti-anxiety drugs work by targeting the 'GABA' system in the brain, which often leads to sedation and addiction. Scientists testing the plant Aptenia cordifolia found that it produces a massive reduction in anxiety, but it doesn't use the GABA pathway at all. Even more surprising, the effect wasn't caused by the ephedrine naturally found in the plant, which is usually a stimulant. This means there is a 'mystery ingredient' in this plant that acts on a totally different part of the brain to calm nerves. This could lead to a new class of anxiety medications that don't make you feel groggy or 'drugged' because they take a side door into your brain's emotional center.
From the abstract
Ethnopharmacological relevanceAptenia cordifolia (L.f.) Schwantes is traditionally used in African medicine for conditions associated with the nervous system, yet its neuropharmacological properties remain poorly understood.AimThis study aimed to investigate the anxiolytic-like effects of A. cordifolia and to explore the relationship between its chemical composition and behavioral activity in zebrafish (Danio rerio), with emphasis on GABAergic and adrenergic pathways.Materials and methodsThe che