Study shows Zocor could increase incidence of sleep disorders

WHITEHOUSE STATION, N.J. A new study showed that patients on the cholesterol drug Zocor were three times as likely to suffer from insomnia than those who took another cholesterol drug Pravachol and those taking a placebo, according to

Insomnia is listed as a possible side effect for all cholesterol-lowering drugs. Merck spokesman Ron Rogers said the company found no significant effects on sleep in its own insomnia studies comparing Zocor with pravastatin, the generic of Pravachol and a placebo. Nor did the company see sleep disruption as a side effect in two other studies testing the drug’s effectiveness in thousands of patients.

The National Institutes of Health, in Bethesda, Maryland, funded the study. Zocor was the world’s second-best-selling cholesterol pill, behind Pfizer’s Lipitor, before it lost patent protection in June 2006.

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