ICAA International Council on Alcohol and Addictions

Ice Crystallized methamphetamine, dexmethamphetamine - See Methamphetamine

ICPA International Commission for the Prevention of Alcoholism and Drug Dependency

IDU Injection Drug Users

IFLD Institut Francophone de Lutte contre la Drogue

Illicit trafficking Trafic illicite

Inhalants Inhalable substances

Insulin addiction Insulinomanie

Intravenous (IV) drug abuse Toxicomanie par voie intraveineuse, par voie parentérale

IREP Institut de Recherches en Épidémiologie de la Pharmacodépendance (FR)

ISDD Institute for the Study of Drug Dependence (UK)

Isobutyl nitrites Poppers - See PubMed Isobutyl nitrites

IVDU IntraVenous Drug User