title: A new type of oral contraceptive.
mesh_terms: D000328:Adult; D000568:Amenorrhea / Q000139:chemically induced; D002986:Clinical Trials as Topic; D003276:Contraceptives, Oral / Q000008:administration & dosage* / Q000009:adverse effects; D004717:Endometrium / Q000473:pathology; D004997:Ethinyl Estradiol / Q000008:administration & dosage* / Q000009:adverse effects; D005260:Female; D006261:Headache / Q000139:chemically induced; D006801:Humans; D008535:Megestrol / Q000008:administration & dosage / Q000009:adverse effects; D008595:Menorrhagia / Q000139:chemically induced; D009093:Mucus / Q000378:metabolism; D009120:Muscle Cramp / Q000139:chemically induced; D009325:Nausea / Q000139:chemically induced; D010919:Placebos; D011278:Pregnanes / Q000008:administration & dosage* / Q000009:adverse effects; D011372:Progestins / Q000008:administration & dosage* / Q000009:adverse effects
chemical_list: D003276:Contraceptives, Oral; D010919:Placebos; D011278:Pregnanes; D011372:Progestins; D004997:Ethinyl Estradiol; D008535:Megestrol