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How Does It Work?

Tri-Estarylla is a combined oral contraceptive, which means it is a birth control pill that contains two different types of hormones. It contains both an estrogen (ethinyl estradiol) and a progestin (norgestimate). The hormones in Tri-Estarylla 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. Tri-Estarylla 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.
Tri-Estarylla is a triphasic birth control pill, which means there are three different "phases" of pills in each pack, plus the last week of tablets that do not contain any active ingredients. Each week has a different amount of the progestin hormone. This is why it is important to take the pills in the correct order.

When and How to Use This Pill

Some general considerations to keep in mind during treatment with Tri-Estarylla include the following:
  • The medication comes in tablet form. It is taken by mouth once a day.
  • You can take Tri-Estarylla with or without food. If it seems to bother your stomach, try taking it with food.
  • Each pack of Tri-Estarylla contains 28 pills. Make sure to take them in order. Once you finish a pack, start a new one the next day. You will probably start your period during the last seven days of the pack.
  • It is important that you take Tri-Estarylla every day, and at the same time each day. Try to pick a time that will be easy to remember, such as at bedtime or breakfast. If you have trouble remembering, please talk with your healthcare provider, as missing pills increases your risk of pregnancy.
  • Make sure you know exactly what to do if you miss any pills. In some circumstances, you may need to use a backup method of contraception, such as condoms, for a week.
  • For the contraceptive to work properly, it must be taken as prescribed.
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Tri-Estarylla Birth Control Information

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