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Birth-Control Pills With Drospirenone Raise Clot Risk in Study

Women who use birth-control pills made with the hormone drospirenone, such as Bayer AG’s Yasmin, are three times more likely to develop blood clots than those who take an older oral contraceptive, a study found.

The overall risk of developing a clot in the lungs or legs was still low for women using drospirenone, according to the study published today in the British Medical Journal. The research examined U.K. database reports on almost 300 women.