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FDA 'concerned' over clot risk of certain birth control pills

September 28, 2011 12:54:07 AM PDT
The Federal Drug Administration said this week that it "remains concerned" that certain types of birth control pills that contain the hormone drospirenone could raise the risk of blood clots.

Drospirenone is used in contraceptives including Yaz, Yazmin, Syeda, and Ocella, and also comes in a generic form.

According to the FDA, two recent studies show that pills containing this hormone may increase the risk of blood clots. The FDA is scheduled to review the studies at a meeting in December.