DefinitionBirth Control pills, also called oral contraceptives, are prescription medicines designed to prevent pregnancy. Birth control pill overdoseoccurs when someone accidentally or intentionally takes more than the normal or recommended amount of this medication.This is for information only and not for use in the treatment or management of an actual poison exposure. If you have an exposure, you should call your local emergency number (such as 911) or the National Poison Control Center at 1-800-222-1222.Poisonous IngredientMost birth control pills contain one of the following combinations of estrogen and progestin hormones:Ethynodiol diacetate and ethinyl estradiolEthynodiol diacetate and mestranolLevonorgestrel and ethinyl estradiolNorethindrone acetate and ethinyl estradiolNorethindro