Jackpot Fentanyl

Jamaican gold Marijuana

Jane Marijuana

Jimson weed, jimpson weed, Jamestown weed (USA, Virginia) Lat. Datura stramonium Hallucinogen plant / Stramoine

Joint Joint (marijuana cigarette)

Joy stick Marijuana cigarette

Junk See Crack, Heroin

Junkie Addicted person

Ketamine Kétamine (a dissociative anaesthetic synthetized in 1962, hallucinogen which chemical structure is similar to the one of PCP and tiletamine)

Khat Arbuste Lat. Catha edulis Forskal Syn. cath, kat, kath, quat, thé des Abyssins - See Cathinone, Qat

Kif, Kief Mixture of tobacco and cannabis