What Is Estrostep Fe?
Fe (norethindrone/ethinyl estradiol) is a prescription birth control pill
. It is a triphasic birth control pill, which means that each pack of Estrostep Fe has three different phases, each with a different strength of hormones. Estrostep Fe is also approved to treat moderate acne in women who desire contraception.
Who Makes It?
Estrostep Fe is made by Warner Chilcott Company, Inc. Generic Estrostep Fe is sold under the name Tri-Legest® Fe (made by Barr Pharmaceuticals, Inc.) or Tilia™ Fe (made by Watson Laboratories, Inc.).
How Does Estrostep Fe Work?
Estrostep Fe is a "combined" oral contraceptive
, which means that it contains two different types of hormones. It contains both an estrogen (ethinyl estradiol) and a progestin (norethindrone). Combined oral contraceptives are the most common type of birth control pill used today. Generally, combined oral contraceptives are more effective than progestin-only birth control pills.
The hormones in Estrostep Fe prevent pregnancy primarily by stopping ovulation (the maturation and release of eggs from the ovaries). However, it also works to prevent pregnancy in two other, minor ways. Estrostep Fe changes the cervical mucus (the fluid of the cervix, which is the lower, narrow part of the uterus that is connected to the vagina), making it more difficult for sperm to enter the uterus. It also alters the lining of the uterus (the endometrium), making it less receptive to an embryo.
Estrostep Fe is known as a triphasic birth control pill, which means that there are three different "phases" of pills in each pack, plus the last week of tablets, which do not contain any hormones. Each week of Estrostep Fe tablets contains a different amount of hormones. This is why it is important to take the pills in the correct order.
Like most birth control pills, each pack of Estrostep Fe contains 21 active tablets, which contain the hormones, followed by 7 inactive tablets, which do not contain any hormones. The last seven tablets, however, do contain iron (the chemical symbol for iron is Fe). The iron may help prevent anemia due to blood loss during your period.