Bromocriptine Treatment for Cocaine Abuse: The Dopamine Depletion Hypothesis

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Abstract
The authors review the evidence that cocaine exerts its rewarding effects through the acute activation of dopamine (DA) pathways in the brain. Chronic cocaine administration is hypothesized to lead to DA depletion, which results in cocaine craving and cocaine abstinence states. Treatment of these states with bromocriptine, a DA antagonist, appears to have efficacy with acute and maintenance trials, and may represent a new adjunctive treatment for cocaine abuse. DA antagonists appear to exacerbate cocaine craving, which is consistent with the DA depletion hypothesis of chronic cocaine abuse. Theoretical issues relating to drug addiction and endogenous reward centers are discussed.

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