CBD shows preclinical promise for treating cocaine and methamphetamine addiction through multiple mechanisms | Research

The takeaway

A review of preclinical evidence found CBD reversed cocaine toxicity, reduced motivation to self-administer stimulants, enhanced extinction of drug memories, and prevented relapse in animal models, with several plausible mechanisms identified.

Addiction researchers, treatment providers for stimulant use disorders, and pharmacologists developing new addiction medications.

No approved stimulant addiction meds

What the researchers found

CBD reversed cocaine-induced toxicity and seizures, blocked amphetamine behavioral sensitization, reduced cocaine and methamphetamine self-administration, promoted extinction of drug-place associations, and prevented stress- and drug-induced reinstatement. Observational human studies suggest CBD may reduce crack-cocaine withdrawal, craving, impulsivity, and paranoia.

Why it matters

There are currently no approved medications for cocaine or methamphetamine addiction. If CBD can reduce relapse and craving through the multiple mechanisms identified, it could fill a critical gap in addiction treatment.

The numbers in context

CBD prevented cocaine seizures and toxicity. Reduced self-administration of cocaine and METH. Enhanced extinction and impaired reconsolidation of cocaine conditioned place preference. Prevented priming-induced reinstatement of METH seeking. Observational data: reduced craving, impulsivity, paranoia.

How the study worked

Review of preclinical and limited human research on CBD effects on cocaine and methamphetamine use disorders, plus analysis of potential mechanisms including neuroadaptation prevention, drug memory erasure, cognitive restoration, and mental health comorbidity treatment.

What this study cannot tell us

Most evidence is preclinical. Observational human data is preliminary. CBD doses used in animal studies may not translate to humans. The specific mechanisms remain hypothetical. No completed randomized controlled trials in humans.

How to read the evidence

Rated preliminary because the evidence is predominantly preclinical, with only observational human data available.

When this study was published

Published in 2019. Clinical trials of CBD for stimulant addiction may have progressed since.

The bigger picture

The breadth of CBD effects on stimulant addiction, from toxicity protection to relapse prevention, suggests it may act on fundamental addiction processes rather than a single pathway. This multi-target profile could be uniquely suited to the complexity of addiction.

Questions still open

Will CBD show efficacy in randomized human trials for stimulant addiction? What is the optimal dose and duration of CBD treatment? Could CBD be combined with behavioral therapies for additive effects?

Common questions

Could CBD help treat cocaine or meth addiction?

Animal studies show promising results including reduced drug-seeking and relapse prevention. Limited human observations suggest reduced craving and withdrawal. But no randomized controlled trials have been completed yet.

How might CBD work for stimulant addiction?

Multiple mechanisms are proposed: preventing drug-induced brain changes, erasing drug-associated memories, restoring cognitive function, and treating coexisting mental health conditions that drive substance use.

Read the original research

Cannabidiol Treatment Might Promote Resilience to Cocaine and Methamphetamine Use Disorders: A Review of Possible Mechanisms.

Molecules (Basel, Switzerland), 24(14)

View on PubMed ↗Publisher’s paper ↗

Citation

Calpe-López, Claudia; García-Pardo, M Pilar; Aguilar, Maria A. (2019). Cannabidiol Treatment Might Promote Resilience to Cocaine and Methamphetamine Use Disorders: A Review of Possible Mechanisms.. Molecules (Basel, Switzerland), 24(14). https://doi.org/10.3390/molecules24142583