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Mixing Heroin and Alcohol

Updated on: February 18, 2025

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In the case of mixing heroin and alcohol, one plus one does not equal two.

Alcohol and Heroin bring bodily functions to a slow crawl and risk permanent cessation of systems altogether. There are many dangers of mixing alcohol and heroin, including severe brain damage.

In other words, these two substances, when taken at the same time, multiply the resulting effect. Heroin plus alcohol often leads to much more dire—and often fatal—consequences.

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Dangers of Mixing Alcohol and Heroin

The overwhelming majority of heroin overdoses are caused by combining heroin with alcohol or other drugs, especially sedatives. This is because both heroin and alcohol are depressants, meaning they lower blood pressure, heart rate, and respiratory output (i.e. slow breathing). In other words, heroin and alcohol bring bodily functions to a slow crawl and risk permanent cessation of systems altogether.

According to the Centers for Disease Control and Prevention, addiction to alcohol often precedes heroin use:

People who are addicted to alcohol are twice as likely to become addicted to Heroin at some point in their lifetimes. People who are addicted to one of the substances will often begin to combine it with the other in order to increase the sedative effects of each drug and achieve a stronger high. Due to the ways that the two substances affect the brain, the intoxication that results from mixing them is much more intense than using just one of them on their own.

Furthermore, users often experience greater intoxication when alcohol is mixed with narcotics like heroin, making it easier to drink to excess and risk alcohol poisoning.

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Effects of Mixing Alcohol and Heroin

According to an article on the website for Alcohol Rehab Guide, some severe side effects of mixing heroin and alcohol include:

  • Severe fatigue
  • Dizziness
  • Vomiting
  • Loss of consciousness
  • Weak pulse
  • Shallow breathing
  • Impaired coordination
  • Respiratory depression
  • Tremors
  • Slowed or irregular heart rate
  • Coma

Other chronic side effects include:

  • Collapsed veins
  • Insomnia
  • Infection of the heart lining and valves
  • Damaged tissue
  • Anxiety
  • Constipation
  • Liver and kidney disease
  • Depression
  • Antisocial personality disorder
  • Sexual dysfunction

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  • Dangers of Mixing Alcohol and Heroin
  • Effects of Mixing Alcohol and Heroin

  • Dangers of Mixing Alcohol and Heroin
  • Effects of Mixing Alcohol and Heroin

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National Institute on Drug Abuse. (2018, June). Heroin Research Report Overview. https://nida.nih.gov/publications/research-reports/heroin/overview

Department of Justice, Drug Enforcement Administration. (2020, April). Heroin. https://www.dea.gov/sites/default/files/2020-06/Heroin-2020.pdf

University Health Service. (n.d.). The Effects of Combining Alcohol with Other Drugs. https://uhs.umich.edu/combine

Hilliard, J. (2023, November 14). Alcohol And Heroin. Alcohol Rehab Guide. https://www.alcoholrehabguide.org/alcohol/drinking-drugs/heroin/

https://drugpolicy.org/drug-facts/mixing-heroin-alcohol-drugs

https://www.therecoveryvillage.com/heroin-addiction/heroin-overdose/#gref

David Beasley

About the Writer

David Beasley

David Beasley is the founder of Design for Recovery Sober Living Homes in Los Angeles and a mentor dedicated to helping young men rebuild their lives after addiction. His work focuses on structured, values-based recovery that goes beyond sobriety to real character change. As a recovery mentor and life coach, he combines personal experience, accountability, and practical guidance to support long-term growth.

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