7 drug categoriesVersion en ligne 7 drug categories par Pamela Nau 1 depressants 2 stimulants 3 hallucinogens 4 dissociative anesthetics 5 inhalants 6 cannabis 7 narcotic analgesics drugs that slow down the activity of body and brain alcohol xanax drugs that speed up the activity of body and brain cocaine methamphetamine caffeine drugs that make the user experience things they know are not real LSD ecstasy drugs that separate the body from the brain PCP solvent or other vapor-producing material that is inhaled nitrous oxide paint thinner a plant that produces hemp fiber as a drug marijuana THC drugs which can be effective for the relief of severe pain heroine fentanyl codeine