title: When patients 'can't' take the pill.
abstract: Most side effects of oral contraceptives can be attributed to an excess or a deficiency of estrogen or progestin. Knowledge of the relative amounts of estrogen and progestin in the available preparations permits a rational adjustment of dosage if side effects occur. With this information, nearly every woman who wants to use birth control pills can.
mesh_terms: D000152:Acne Vulgaris / Q000139:chemically induced; D000293:Adolescent; D000328:Adult; D003276:Contraceptives, Oral / Q000009:adverse effects*; D003278:Contraceptives, Oral, Hormonal / Q000009:adverse effects* / Q000032:analysis; D004305:Dose-Response Relationship, Drug; D004487:Edema / Q000139:chemically induced; D005260:Female; D006261:Headache / Q000139:chemically induced; D006801:Humans; D008656:Mestranol / Q000032:analysis; D009640:Norethindrone / Q000032:analysis; D011247:Pregnancy; D012880:Skin Pigmentation / Q000187:drug effects
chemical_list: D003276:Contraceptives, Oral; D003278:Contraceptives, Oral, Hormonal; D008656:Mestranol; D009640:Norethindrone