What Is THC?

THC stands for delta-9-tetrahydrocannabinol or Δ-9-tetrahydrocannabinol (Δ-9-THC). It is a cannabinoid molecule in marijuana (cannabis) that’s long been recognized as the main psychoactive ingredient—that is, the substance that causes people who use marijuana to feel high.

best delta 9 vape oil is just one of more than 500 different substances—and 100 different cannabinoid molecules—in marijuana.1 Although THC is the most recognized, another important cannabinoid molecule that has received major interest is cannabidiol (CBD).