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    Blood Pressure Drug May Ease Severe Cocaine Withdrawal


    WebMD Health News

    April 12, 2001 -- Withdrawal symptoms and cravings for cocaine make it difficult for even the most motivated addict to kick the habit. But a medication commonly used to treat high blood pressure may offer help in that struggle by helping to relieve even those struggling with extremely severe symptoms.

    In fact, the drug, known as Inderal, seems to work best in those patients experiencing very severe withdrawal symptoms, says to Kyle Kampman, MD, medical director of the University of Pennsylvania Treatment Research Center in Philadelphia.

    "Patients who come into treatment with more severe withdrawal symptoms are the most difficult to treat," Kampman tells WebMD. "We know these patients are more likely to drop out of treatment and less likely to get clean. So this is the most difficult population to treat, and it is this particular population that the drug is likely to help."

    In a recent study in the Journal of Drug and Alcohol Dependence, 108 cocaine-dependent patients received either Inderal or an inactive placebo pill for eight weeks. Severity of withdrawal symptoms, continued use of cocaine -- as measured by urine samples -- and length of stay in treatment were compared between the two groups.

    Results showed that in general, Inderal helped reduce withdrawal symptoms but did not diminish cocaine use or improve the length of time spent in treatment.

    Yet, when Kampman and colleagues looked at a smaller subgroup of patients who had the worst withdrawal symptoms upon entering the study, they found better results: Those patients receiving Inderal not only had reduced withdrawal, they stayed in treatment longer and had lower levels of cocaine in their urine.

    "Only 40% of patients have a lot of withdrawal symptoms," Kampman says. "Interestingly, the patients who don't have a lot of withdrawal symptoms usually do well in treatment, whereas the patients with a lot of symptoms don't respond."

    Kampman says Inderal works by blocking the effects of the hormone adrenaline, which can trigger cravings for cocaine in patients by producing a host of uncomfortable symptoms: racing heart, sweating, shakiness, and nervousness. And it is during the withdrawal period that patients are especially sensitive to the uncomfortable effects of adrenaline.

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