Which is more suitable for patient with pcos and endometriosis doing ivf? dydrogesterone or medroxyprogesterone?

Similar: I think it comes down to "what are you using them for?" in IVF. Both are synthetic progestins, both are safe with limited side effects. For regulating a cycle start there should be no difference. Some protocols use Duphaston (dydrogesterone) for luteal support in IVF, MPA (medroxy-P) would be a less good choice - although micronized progesterone is probably superior to both.