Plants come to mind: phytocannabinoids, endocannabinoids and the control of seizures.

Farrell, Jordan S; Soltesz, Ivan · Addiction · 2019

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Abstract

A growing body of evidence highlights that the endogenous cannabinoid (endocannabinoid) system is a key target for seizure control. Plant-derived cannabinoids have several endocannabinoid and related mechanisms that may be fundamental to their anti-seizure properties.

Medical subject headings