the pill contains both estrogen and progesterone, so why would that aid in preventing gyno, if anything it would probably make symptoms worse. The doses are extremely minute, but it has no anti estrogenic properties. Clomid will block estrogen to an extent and that is used as a fertility drug, nolvadex will also make a woman more fertile, which is the exact function of the pill which adds female hormones to their system making them unable to get pregnant