ESTRADIOL (es tra DYE ole) skin patches contain an estrogen. It is mostly used as hormone replacement in menopausal women. It helps to treat hot flashes and prevent osteoporosis.

How much estrogen is in the patch?

Estrogen patches claim to deliver from 0.25 mg to 1.0 mg of estradiol in a 24-hour period. These numbers are based on the amount of estradiol that is measured in venous serum blood following administration.

Does the patch use estrogen?

The birth control patch is a type of contraception that contains the hormones estrogen and progestin. You wear the patch to avoid becoming pregnant. Once a week for three weeks, you place a small patch on your skin, so that you wear a patch for a total of 21 days.