Some of the newer birth control pills contain the hormone drospirenone, while the older ones contain levonorgestrel. Birth control pills containing the newer hormone have recently been found to have a higher risk for women developing blood clots that could potentially be serious.
Gianvi, Ocella, Yasmin, Yaz, and Sarah are all birth control pills that contain drospirenone; those containing levonorgestrel include Jolessa, LoSeasonique, Quasense, Sesonale, and Seasonique.
The makers of Yasmin and Yaz are stating that the study has flaws. Researchers say the risk is small; however, by estimates three out of 10,000 who take the pill containing drospirenone for a year could develop a clot compared to about 1.2 women in 10,000 who take levonorgestrel.
Other studies have also linked the newer pills to an increased risk for pulmonary embolisms and deep vein thrombosis, but these studies included women who had known risk factors for those conditions.
Birth control pills are known to prevent pregnancy, treat acne and help with premenstrual symptoms. Prescribing the lower-risk levonorgestrel should be the first choice for women wishing to take an oral contraceptive. There is sure to be more investigation and studies performed that would give everyone more insight regarding the newer hormone.