Tetrahydrocannabinol, known as THC, the psychoactive component in marijuana, usually varies between 4 percent and 20 percent of a leaf.

Psilocybin, the active psychoactive component in Psilocybe cubensis, has a strong mind altering effect.

In the United States, Federal law was passed in 1971 that put the psychoactive components into the most restricted schedule I category.

Albizia canescens is also contains many of the same psychoactive components as A. lebbeck although no record of its use as a psychoactive agent exists .

Vertine, also known as cryogenine, is regarded as the primary psychoactive component and is also generally the most abundant constituent of alkaloidal extracts.

An international team demonstrated that this material contained tetrahydrocannabinol, the psychoactive component of cannabis.

The major psychoactive component in marijuana, tetrahydrocannabinol, has been shown to have anticarcinogenic activity, when injected into mice.

Tetrahydrocannabinol (THC) is the primary psychoactive component of the Cannabis plant.

"Although these foods both have a small psychoactive component, people do not abuse them."

Cathinone is the major psychoactive component of the plant Catha edulis (khat).