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Cannabinoid antagonist effects on behaviors maintained by ethanol and food

The cannabinoid CB1 antagonist rimonabant (SR141716A) has been proposed as a therapeutic agent for several addictive disorders, including alcoholism. Rimonabant may selectively reduce responding for an ethanol solution compared with an alternative. While this could represent a specific effect of CB1 inhibition on ethanol reinforcement, this could also result from differences in the baseline rates of behavior or experiences between comparison groups. We developed a procedure in rats that allows within‐subject comparison of ethanol‐ and food‐maintained responding and provides well‐matched baseline response rates.