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Harm-reduction approach to alcoholism gains growing credibility

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Effective remittive therapy, not ‘harm reduction’

Alcohol use disorders are clinical diagnoses based on a loss of control over alcohol consumption despite adverse consequences. Remission occurs when an individual exerts control over his or her drinking behavior. Abstinence is the safest option, but, paraphrasing Voltaire, the perfect should not be the enemy of the good.

It has long been known that people with a diagnosis of alcohol dependence can moderate their drinking, and that such reductions in consumption reduce end-organ damage and other adverse health consequences. So, it makes complete sense that the opioid antagonists naltrexone or nalmefene that reduce alcohol’s euphoric reward and help alcoholic patients regain control over their drinking should be welcome additions to the pharmacopoeia.

Medicine has long accepted disease-modifying therapies as organ- and lifesaving for other disorders – gold salts and methotrexate for rheumatoid arthritis come to mind. Such remittive agents reduce disease activity without an insistence on complete, total, and lasting cure.

These medications are called effective treatment, and are not burdened by the apologist moniker of “harm reduction.” Effective remittive therapies for alcohol dependence such as naltrexone and nalmefene should not be viewed any differently.

Peter D. Friedmann, M.D., M.P.H., is professor of medicine and professor of health services, policy, and practice at Brown University, Providence, R.I. He has received research support from Alkermes and a speaker’s honorarium from Orexo.


 

EXPERT ANALYSIS FROM THE ECNP CONGRESS

References

Nalmefene and naltrexone, the latter of which is available in the United States, are both mu opioid receptor antagonists that also affect the delta opioid receptor. However, nalmefene also is a partial agonist at the kappa opioid receptor.

Dr. Swift said both drugs have been shown in preclinical and clinical studies to interrupt multiple biobehavioral mechanisms responsible for initiating and maintaining alcohol dependence. They reduce alcohol craving, block the motivation to drink to relieve stress and anxiety, and might improve impulsivity.

“Naltrexone has been shown not only to affect the rewards of alcohol consumption, it also seems to have direct cognitive and attentional effects in the orbitofrontal cortex. It reduces preoccupation with alcohol and improves attention to non–alcohol related stimuli,” he said. “I think that’s a really important finding and provides a new understanding of how opioid antagonists work.”

The psychiatrist noted that a recent meta-analysis concluded that opioid antagonists are better for reducing heavy drinking than for increasing abstinence (Addiction 2013;108:275-93).

Dr. Swift reported receiving honoraria from Lundbeck and serving as an adviser or consultant to D&B Pharma and CT San Remo. Dr. van den Brink is on the advisory boards of Lundbeck and more than a half-dozen other pharmaceutical companies.

bjancin@frontlinemedcom.com

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