A packaging mistake that could raise the risk of unplanned pregnancy is what’s behind Pfizer’s recall of 1 million packets of birth control pills. The mix-up affects 14 lots of Lo/Ovral-28 tablets and 14 lots of generic Norgestrel and Ethinyl Estradiol tablets. Some of the packets have too many active tablets, while others have too few, which could leave women with an inadequate dose of the hormones and raise the risk of accidental pregnancy.

A statement released by Pfizer Tuesday says that “These packaging defects do not pose any immediate health risks,” but because of the packaging error, it “could leave women without adequate contraception, and at risk for unintended pregnancy.”

The Food and Drug Administration has published a complete list of recalled lot numbers, and if you're taking any of these meds, you might want to pick up some back-up birth control methods while you're returning your pills to the pharmacy (which is, by the way, what both Pfizer and the FDA are recommending).