title: Progress in contraception: new technology.
abstract: Unintended pregnancy continues to be a major public health issue in this country. Approximately 50% of pregnancies in the United States are unintended, and, of these, half end in abortion. Although tubal sterilization is highly effective, many women subsequently express regret and remorse. Oral contraceptives represent an effective, reversible method. However, many women have difficulty using them consistently and correctly. Recently, four new delivery systems for hormonal contraception have become available in the United States: the monthly injection, the levonorgestrel intrauterine system, the combination hormonal contraceptive vaginal ring, and the transdermal contraceptive patch. All four new methods are effective, readily reversible, generally discreet, and reduce daily compliance challenges. The monthly injection, vaginal ring, and transdermal patch can be discontinued without the need for an office visit. This expanded menu of effective contraceptive options should help women find a method that suits their particular life style.
mesh_terms: D000282:Administration, Intravaginal; D003271:Contraceptive Agents, Female / Q000008:administration & dosage* / Q000009:adverse effects; D003274:Contraceptive Devices, Female; D003277:Contraceptives, Oral, Combined / Q000008:administration & dosage / Q000009:adverse effects; D017135:Desogestrel / Q000008:administration & dosage / Q000009:adverse effects; D004338:Drug Combinations; D016503:Drug Delivery Systems / Q000379:methods*; D004958:Estradiol / Q000008:administration & dosage / Q000031:analogs & derivatives*; D004967:Estrogens / Q000008:administration & dosage / Q000009:adverse effects; D004997:Ethinyl Estradiol / Q000008:administration & dosage / Q000009:adverse effects; D005003:Ethisterone / Q000031:analogs & derivatives; D005260:Female; D006801:Humans; D016912:Levonorgestrel / Q000008:administration & dosage / Q000009:adverse effects; D017258:Medroxyprogesterone Acetate / Q000008:administration & dosage; D009644:Norgestrel / Q000031:analogs & derivatives; D010091:Oximes
chemical_list: D003271:Contraceptive Agents, Female; D003277:Contraceptives, Oral, Combined; D004338:Drug Combinations; D004967:Estrogens; C403500:Lunelle; D010091:Oximes; C044815:etonogestrel; D009644:Norgestrel; D004997:Ethinyl Estradiol; D004958:Estradiol; D016912:Levonorgestrel; D017135:Desogestrel; D017258:Medroxyprogesterone Acetate; D005003:Ethisterone; C449219:norelgestromin