Canada Links Merck Drugs To Male Breast Cancer

Law360, New York (August 5, 2011, 3:42 PM EDT) -- Canada's health department warned Thursday that use of Merck & Co. Inc.'s Propecia and Proscar could amplify the risk of male breast cancer, less than two months after U.S. officials said the drugs could increase the likelihood of prostate cancer.

Health Canada said a small number of men taking finasteride, sold by Merck under the brand name Propecia for the treatment of male-pattern hair loss and under the name Proscar for treatment of benign prostatic hyperplasia, had developed breast cancer.

The labeling on finasteride-based medications, which...
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