History of breast cancer; thrombosis; chloasma. Liver cancer; diabetes; epilepsy; TB; high BP. Avoid excessive sun or UV exposure. Decreased bone mass. Regularly check the breast for lump. Heavy or prolonged vag bleeding; ovarian cysts. Concomitant use w/ primidone, phenytoin, carbamazepine, oxcarbazepine, felbamate, topiramate & phenobarb, rifampicin, rifabutin, ritonavir, nelfinavir, nevirapine, efavirenz, boceprevir, telaprevir, griseofulvin, bosentan, medical charcoal, St. John's wort; cyclosporine-containing drugs, lamotrigine. Intolerance to some sugars eg, lactose. Pregnancy.