substance abuse

over usage of addictive products (drugs, alcohol)

Also see Alcoholism and Drug addiction. Or for the American Hip Hop group, see Substance Abuse (Artist)Definitions of substance abuse vary and have changed over time. However, this is the most well known definition and the definition for which the term should be used. Substance abuse refers to the use of substances when said use is causing detriment to the individual's physical health or causes the user legal, social, financial or other problems including endangering their lives or the lives of others. Substance abuse is not specific to illegal substances but people can also abuse legal substances which are bought or prescribed. Substance abuse is an old fashioned term for which the term problematic substance use is now more widely used.
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Noun
1. excessive use of drugs
(synonym) drug abuse, habit
(hypernym) misuse, abuse
(hyponym) alcohol abuse, alcoholic abuse, alcoholism abuse