This record contains information specific to ethinyl estradiol used alone. Users with an interest in an oral contraceptive should consult the record entitled, record entitled, Contraceptives, Oral, Combined. There is little information available on the use of ethinyl estradiol alone during breastfeeding. The concentration in milk is negligible with dosses of 35 mcg or less daily. Based on studies on oral contraceptives that contain ethinyl estradiol, immediate side effects such as breast enlargement appear to occur rarely. It seems likely that doses of 30 mcg daily or greater can suppress lactation. The magnitude of the effect on lactation likely depends on the dose and the time of introduction postpartum. It is most likely to occur if the estrogen is started before the milk supply is well established at about 6 weeks postpartum. The decrease can happen over the first few days of estrogen exposure.[1]
本记录包含单独使用炔雌醇的特定信息。对口服避孕药感兴趣的使用者应查阅名为《口服复方避孕药》的记录。关于母乳喂养期间单独使用炔雌醇的信息很少。乳汁中的含量似乎较低。根据对含炔雌醇的口服避孕药的研究，诸如乳房增大等即时副作用似乎很少发生。每日30微克或更高剂量似乎可以抑制泌乳。对泌乳的影响程度可能取决于剂量和产后引入的时间。如果在产后约6周乳汁供应尚未充分建立之前开始使用雌激素，最有可能发生这种情况。这种减少可能在接触雌激素的头几天内出现。[1]
