Drospirenone is a progestin that is an analogue of spironolactone. It has antimineralocorticoid and antiandrogenic activities. Amounts in milk are very low and no adverse effects on the breasted infant or milk supply are expected. Expert opinion holds that the risks of progestin-only contraceptive products usually are acceptable for nursing mothers at any time postpartum.[1,2] For further information, consult the record entitled, Contraceptives, Oral, Combined.