Oestrogen-dominant brands such as Ovysmen or Brevinor tend to reduce attack frequency more than progesterone-dominant brands such as Microgynon or Eugynon, so switching brands may help.
Other pills with higher doses of progestin include TriNovum, Ovran 30, BiNovum, Loestrin 30, Ovysmen and Norimin and Brevinor. Their effects were studied by a team led by Joellen Schildkraut of ...
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