N₂O Nitrogen monoxide / Protoxyde d'azote

NA Narcotics Anonymous (USA)

NADDIS Narcotics and Dangerous Drugs Information System (USA)

Narcomania Narcomanie

Narcotic Narcotique (Narcotics are extracted from opium).

Narcotic addiction, narcotism Narcotisme

NCADD National Council on Alcoholism and Drug Dependence (USA)

NCPA National Committee for the Prevention of Alcoholism and Drug Dependency (USA)

Neige Cocaine (Idem Snow)

Nexus -- 2-(4-Bromo-2,5 diethoxy-phenyl)-ethylamine

Nicotine Nicotine / Nicotina

Nicotine-addiction breaking Sevrage nicotinique

NIDA National Institute on Drug Abuse (USA)

Nieve Cocaine

Nightshade An hallucinogen

NMF National Masonic Foundation for the Prevention of Drug and Alcohol Abuse Among Children (USA)

Nose See Cocaine