The Role of Cannabidiol (CBD) in Addiction Inhibition: Mechanisms, Therapeutic Potential, and Implications for Substance Use Disorders

Title: The Role of Cannabidiol (CBD) in Addiction Inhibition: Mechanisms, Therapeutic Potential, and Implications for Substance Use Disorders

Creators: Hallelujah, Paul (University of Toronto & Queen's University Alumnus)

Publication Date: 2026-02-10

Description: Addiction, or substance use disorder (SUD), remains a critical public health challenge characterized by chronic relapse, compulsive drug-seeking, and limited therapeutic options. This comprehensive review examines the neurobiological mechanisms and therapeutic potential of Cannabidiol (CBD)—a non-intoxicating phytocannabinoid derived from Cannabis sativa—as a broad-spectrum intervention for addiction inhibition.

Unlike Delta-9-tetrahydrocannabinol (THC), CBD lacks abuse liability and exerts a "multi-target" pharmacological profile that modulates several key neural pathways implicated in addiction. This paper synthesizes preclinical and clinical evidence across a wide spectrum of addictive disorders, including:

• Opioid Use Disorder (OUD): Mechanisms of cue-induced craving reduction and alleviation of withdrawal anxiety.

• Alcohol Use Disorder (AUD): CBD's role in neuroprotection, reduction of voluntary intake, and prevention of stress-induced relapse.

• Psychostimulant Addiction: Efficacy in accelerating the extinction of cocaine and methamphetamine reward memories.

• Nicotine and Cannabis Dependence: Potential for reducing consumption and managing withdrawal symptoms.

• Food Addiction: Modulation of the endocannabinoid system to suppress compulsive eating behaviors.

Key Mechanisms Explored: The review provides a deep dive into the molecular and circuit-level actions of CBD, including:

1. Dopaminergic Regulation: Attenuation of drug-induced dopamine surges in the mesolimbic reward pathway.

2. Endocannabinoid System (ECS) Reset: Inhibition of FAAH and negative allosteric modulation of CB1 receptors to restore homeostatic signaling.

3. Serotonergic Signaling: Activation of 5-HT1A receptors to mediate anxiolytic effects and reduce stress-reactivity.

4. Glutamatergic Plasticity: Normalization of AMPA receptor expression (GluR1) and prevention of excitotoxicity.

5. Neurogenesis: Promotion of hippocampal neurogenesis and BDNF expression, critical for cognitive flexibility and extinction learning.

This work positions CBD not merely as a symptom-management tool, but as a holistic neurobiological intervention capable of recalibrating the addicted brain's reward, stress, and executive control circuits.

Keywords: Cannabidiol, CBD, Substance Use Disorder, Addiction, Opioid Use Disorder, Alcohol Use Disorder, Nicotine Addiction, Psychostimulants, Neurogenesis, Endocannabinoid System, 5-HT1A receptor, Dopamine, Relapse Prevention, Neuroscience, Pharmacology

Language: English

License: Creative Commons Attribution 4.0 International