Cocaine is a crystalline tropane alkaloid that is obtained from the leaves of the coca plant. The name comes from “coca” and the alkaloid suffix “-ine”, forming “cocaine”. It is controlled internationally by the Single Convention on Narcotic Drugs.
Caffeine is a bitter, white crystalline xanthine alkaloid and a stimulant drug. Caffeine is found in varying quantities in the seeds, leaves, and fruit of some plants, where it acts as a natural pesticide that paralyzes and kills certain insects feeding on the plants, as well as enhancing the reward memory of pollinators.
Crystal Meth – illicit methamphetamine hydrochloride. Methamphetamine contracted from N-methyl-alpha-methylphenethylamine is a neurotoxin and potent psychostimulant of the phenethylamine and amphetamine classes that is used to treat attention deficit hyperactivity disorder (ADHD) and obesity.