Miami heat player Dion Waiters suffered an adverse reaction after consuming THC-infused edibles during a team flight on Thursday night after a game against the Phoenix Suns. THC or Tetrahydrocannabinol is a psychoactive ingredient in marijuana plants. It is the compound that gives users of the drug a “high” sensation. THC is included in the NBA’s list of banned substances. Waiters suffered seizures and lost consciousness as a result of ingesting THC-laced gummies.