COC1=CC(=O)O[C@H](C1)/C=C/C2=CC=CC=C2 The pharmacological targets through which this compound exerts its effects.
Living organisms in which this compound is naturally found.
- Singh 1992
- Sarris et al. 2011 DOI
Best-characterized of the kavalactones of Piper methysticum. Modulates GABA-A receptors and inhibits voltage-gated sodium and calcium channels — producing a clear-headed, sociable anxiolytic effect quite distinct from alcohol or benzodiazepines.
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COC1=CC(=O)O[C@H](C1)/C=C/C2=CC=CC=C2 The pharmacological targets through which this compound exerts its effects.
Living organisms in which this compound is naturally found.

Pyridine alkaloid acting as a partial muscarinic acetylcholine receptor agonist. The primary psychoactive constituent of betel/areca nut, producing mild stimulation, warmth, and a sense of well-being alongside well-documented carcinogenic risk to oral tissues with chronic use.

Phenylpropanoid found in Acorus calamus and Asarum species. Mechanism remains incompletely understood; mild psychoactive, sedative, and tonic effects have been described historically. β-asarone, a related isomer, is classified as a probable carcinogen and is the reason calamus from Indian-strain plants is regulated as a food additive.

Isoquinoline alkaloid widespread in Berberis, Hydrastis, Argemone, Coptis and many other genera. Not classically psychoactive — included for completeness as a major alkaloid of several plants in the atlas. Active research target for metabolic and cardiovascular conditions.

The most widely consumed psychoactive substance on Earth. Acts primarily as a competitive antagonist of adenosine receptors, indirectly raising dopamine, norepinephrine, and acetylcholine signaling — producing wakefulness, alertness, and mild euphoria.