Los anticonceptivos orales de 2ª generación son los que menos riesgo tromboembólico presentan.

http://sundhedsstyrelsen.dk/en/news/2015/2nd-generation-contraceptive-pills-associated-with-the-lowest-risk-of-blood-clots

Facts about contraceptive pills*

1st generation contraceptive pills: Qlaira®
The contraceptive pills contain the progesterones norethisterone or dienogest
2nd generation contraceptive pills: Anastrella®, Cilest®, Ethinylestradiol/levonorgestrel "Copharma", Etnor, Femicept, Loette® 28, Microgyn®, Microstad, Rigevidon.
The contraceptive pills contain the progesterones norgestrel, levonorgestrel and norgestimate
3rd generation contraceptive pills: Daisynelle®, Denise®, Femelle, Femigen, Femistad, Gestinyl®, Gestodilat®, Harmonet®, Marvelon®, Mercilon®, Minero, Minulet®, Modina.
The contraceptive pills contain the progesterones desogestrel and gestodene
4th generation contraceptive pills: Cleosensa, Dretine®, Estron® 28, Finminette®, Stefaminelle®, Veyann®, Yasmin 28®, Yasmin®, Yasminelle 28®, Yasminelle®, Yaz®.
The contraceptive pills contain the progesterone drospirenone