Taking atorvastatin together with an oral contraceptive raised the blood levels of ethinyl estradiol (the estrogen in the pill) by about 20%. The same combination also raised norethindrone by about 30%.
These medicines are often taken together with some care. Your doctor may change a dose, space them apart or check on you more often. Make sure your doctor and pharmacist know you take both.
What to do: Ask your doctor or pharmacist before combining them. They may check you or change the plan.