THC, the active ingredient
ONE OF the active ingredients.
The fallacy that THC is the only active ingredient of cannabis is what's lead to the prevalence of the high-THC rubbish which is predominant in the market these days. It's the modern day equivalent of the bathtub gin which caused so much damage during the US's prohibition years and the source of the relatively new phenomenon of 'cannabis psychosis'. Please don't perpetuate this myth.