The use of combined contraceptives that contains estrogen and progesterone may increase the risk of thrombosis.
This risk of thrombosis is more evident in the presence of other diseases or risk factors.
The association between contraception and thrombosis is not causal, ie whoever takes contraceptives will not necessarily have thrombosis. This association is an additional risk that is not evidenced in healthy women.
Cases of thrombosis concomitant with contraceptive use usually occur in women with any present risk factors such as obesity, old age, or smoking.
In choosing a contraceptive method and at the beginning of the use of some medication it is important to medical evaluation to investigate the presence of risk factors and an adequate indication of the most appropriate medication in each case.