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Triphasil

Triphasil is a brand-name oral contraceptive that is available by prescription. It is one of the most common types of birth control pills, containing both an estrogen and a progestin. Each pack contains three "phases" of tablets, each with a different amount of hormones. These pills must be taken in order. Potential side effects include nausea, vomiting, and acne.

What Is Triphasil?

Triphasil® (levonorgestrel/ethinyl estradiol) is a prescription birth control pill. In addition to the brand-name version, two generic forms are available, sold under the following names:
 

   

(Click Triphasil Uses for more information, including possible off-label uses.)
 

Who Makes This Medicine?

Brand-name Triphasil is no longer available. It was made by Wyeth Pharmaceuticals, Inc. Generic versions are still available and are made by other manufacturers (see Generic Triphasil for more information).
 

How Does It Work?

Triphasil is a "combined" oral contraceptive, which means that it contains two different types of hormones. It contains an estrogen (ethinyl estradiol) and a progestin (levonorgestrel). Combined oral contraceptives are the most commonly used type of birth control pill. Generally, combined oral contraceptives are more effective than progestin-only birth control pills.
 
The hormones in Triphasil prevent pregnancy by stopping ovulation (the maturation and release of eggs from the ovaries). However, the pill also works to prevent pregnancy in two other, less important ways. It 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.
 
Triphasil is known as a triphasic birth control pill (hence the name Triphasil), which means that there are three different "phases" of pills in each pack, plus the last week of tablets with no active ingredients. Each week has a different amount of the hormones. This is why it is very important to take the pills in the correct order.
 
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Triphasil Birth Control Pills

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