Injectable contraceptives estrogen/progestins

As of 1994, there were approximately 47 progestin-containing contraceptive dmg formulations sold in the United States for use as oral contraceptives (Table 3). In addition, there are three nonoral contraceptive formulations containing progestins ie, one injectable (Depo-Provera), one as an intrauterine device (lUD) (Progestasert), and one implantable (Norplant). Of the oral formulations, all but two also contain an estrogen component, ethynylestradiol. 

Women who particularly benefit from progestin-only methods, including minipills, are those who are breast-feeding, those who are intolerant to estrogens, and those with concomitant medical conditions in which estrogen is not recommended. Also injectable and implantable contraceptives are beneficial for women with compliance issues. 

Commonly used methods of reversible contraception include oral and transdermal contraceptives, long-acting injectable estrogens and progestins, implantable progestins, condoms, spermicides, withdrawal, the diaphragm, periodic abstinence, and the intrauterine device. These methods differ in their relative effectiveness, safety, and patient acceptability." ... 

Women receiving anticonvulsants for a seizure disorder require special attention with regard to hormonal contraception. Giving a hormonal contraceptive concomitantly with phenobarbital, carba-mazepine, or phenytoin reduces the contraceptive s efficacy, and many anticonvulsants (e.g., phenytoin) are known teratogens. The use of condoms in conjunction with high-estrogen OCs, injectable progestin-only contraceptives, or intrauterine devices may be considered for these women. ... 

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