THCP, which is short for tetrahydrocannabiphorol and scientifically known as (-)-Trans-Δ9-tetrahydrocannabiphorol, is a natural cannabinoid and analog of THC present in varieties of cannabis.

It’s thought to be 33 times more active at cannabinoid 1 (CB1) receptors than THC, causing an intense and intoxicating euphoric high. 

THCP’s legality is stuck between conflicting federal legislation. It’s not explicitly listed as a controlled substance and might be protected by the 2018 Farm Bill. However, many believe it’s an illegal substance and belongs under the Federal Analogue Act (FAA).