Women who use it have up to three times the risk of venous thrombosis than those who take the older generation of oral contraceptive as Triquilar.
When placed on the market six years ago, Yasmin was presented by the German pharmaceutical company Bayer as the ideal contraceptive, which allowed even reduce premenstrual syndrome.
But according to Susan Jick, a scientist at Boston University School of Medicine, who led one research, the risk for women is significant, even for those without other risk factors like smoking.
The active agent of Yasmin, the synthetic hormone drospirenone, increase potassium levels in the body, which could cause health problems.
A widely used pill
Nearly two million prescriptions for the pill have been issued in Canada last year.
Pharmacists could now wear a new look at this product.
"I recommend starting with one another that the latter, given the doubts. By cons, a woman who is well stabilized, it suits him well. It has no side effects. At that time, I do not recommend changing it, "said Benoit Morin, owner of a pharmacy in Montreal.
Many class actions were launched against the pharmaceutical Bayer, which produces the Yasmin and cons another contraceptive, Yaz, which uses the same synthetic hormone.
By press release, Bayer challenged the conclusions of the studies and argues that they contain significant methodological shortcomings.
The company says that Yasmin is no more risky than other oral contraceptives, which also increase the risk of blood clots.
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