Smoking and drinking are two vices that often go hand in hand (one hand clutching a drink while the other holds a smoke). A decade ago, a study in the Journal of Studies on Alcohol indicated that as many as 85 percent of heavy drinkers also light up. Smokers have various aids to help them quit the deadly habit, including varenicline, a drug manufactured by Pfizer that blocks nicotine from releasing the pleasure-associated neurotransmitter dopamine. Now new studies in rats show that it also blocks a craving for alcohol.
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