Family history of breast cancer. Liver or gallbladder illness, diabetes, depression, Crohn's disease, ulcerative colitis, hemolytic uremic syndrome, sickle cell disease, epilepsy, SLE; hearing loss, porphyria, gestational herpes, Sydenham's chorea; chloasma, hereditary angioedema. Increased risk of developing arterial & venous thrombosis. May interfere w/ lab tests results. Lactation.