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Signs of Substance Use

Table of Contents


The following are some obvious signs that a person may be drinking alcohol, using tobacco, or using other substances. This is not a complete list. If you suspect use of a particular substance, get more information on signs of use for that substance.




Club drugs such as ecstasy (MDMA)

Stimulants such as cocaine or methylphenidate (Ritalin)

Hallucinogens such as LSD

Opioids such as heroin or hydrocodone (Norco)


Anabolic steroids

Credits for Signs of Substance Use

Current as of: March 21, 2023

Author: Healthwise Staff (
Clinical Review Board (
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