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Zovia

What are birth control pills and how do they work?

Birth control pills are also known as oral contraceptives (OCs) or, simply, “the pill.” They offer protection against pregnancy by blocking the union of sperm and egg, thereby preventing conception.

Oral contraceptives or birth control pills contain synthetic female hormones. They work largely by preventing the release of an egg from an ovary, or ovulation. If no egg is released, there can be no pregnancy.

Stopping ovulation is not the only way birth control pills can work. The progestin or synthetic progesterone in birth control pills also changes the physical and chemical environment of the female reproductive tract, making it hostile for sperm.

What are the different types of birth control pills?

The active ingredients in birth control pills are synthetic versions of the female hormones estrogen and progesterone. Combination oral contraceptives are birth control...

Zovia

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Zovia 1/35E-28
Zovia 1/50E-28

(ethynodiol diacetate and ethinyl estradiol) Tablets USP

Patients should be counseled that this product does not protect against HIV infection (AIDS) and other sexually transmitted diseases.

DRUG DESCRIPTION

Zovia (ehtynodiol diacetate and ethinyl estradiol tablets) 1/35E-28. Each light pink tablet contains 1 mg of ethynodiol diacetate and 35 mcg of ethinyl estradiol, and the inactive ingredients include lactose (anhydrous), magnesium stearate, microcrystalline cellulose, polacrilin potassium, and povidone. In addition, the coloring agents are D&C Red No. 30 Aluminum Lake and D&C Yellow No. 10 Aluminum Lake. Each white tablet in the Zovia (ehtynodiol diacetate and ethinyl estradiol tablets) 1/35E-28 package is a placebo containing no active ingredients and the inactive ingredients include lactose (anhydrous), magnesium stearate and micro-crystalline cellulose.

Zovia (ehtynodiol diacetate and ethinyl estradiol tablets) 1/50E-28. Each pink tablet contains 1 mg of ethynodiol diacetate and 50 mcg of ethinyl estradiol, and the inactive ingredients include lactose (anhydrous), magnesium stearate, microcrystalline cellulose, polacrilin potassium, and povidone. In addition, the coloring agents are D&C Red No. 30 Aluminum Lake and D&C Yellow No. 10 Aluminum Lake. Each white tablet in the Zovia (ehtynodiol diacetate and ethinyl estradiol tablets) 1/50E-28 package is a placebo containing no active ingredients, and the inactive ingredients include lactose (anhydrous), magnesium stearate and microcrystalline cellulose.

The chemical name for ethynodiol diacetate is 19-Nor-17α-pregn-4-en-20-yne-3β, 17-diol diacetate, and for ethinyl estradiol it is 19-Nor- 17α-pregna-1,3,5(10)-trien-20-yne-3, 17-diol. The structural formulas are as follows:

Zovia (Ethynodiol Diacetate and Ethinyl Estradiol) Structural Formula Illustration

Therapeutic class: Oral contraceptive.

What are the possible side effects of ethinyl estradiol and ethynodiol diacetate (Kelnor, Zovia 1/35, Zovia 1/50)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using this medication and call your doctor at once if you have any of these serious side effects:

  • sudden numbness or weakness, especially on one side of the body;
  • sudden headache, confusion, pain behind the eyes, problems with vision, speech, or balance;
  • chest pain or heavy feeling, pain...

Read All Potential Side Effects and See Pictures of Zovia »

What are the precautions when taking ehtynodiol diacetate and ethinyl estradiol tablets (Zovia)?

See also Warning section.

Before using this medication, tell your doctor or pharmacist if you are allergic to any estrogens (e.g., ethinyl estradiol, mestranol) or any progestins (e.g., norethindrone, desogestrel); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this product, consult your doctor or pharmacist if you have: history of stroke or other blood clots (e.g., in the legs, eyes, lungs), severe high blood pressure, abnormal breast exam, cancer (especially endometrial or breast cancer), diabetes that has caused kidney/eye/nerve/blood vessel disease,...

Read All Potential Precautions of Zovia »

Last reviewed on RxList: 12/17/2008
This monograph has been modified to include the generic and brand name in many instances.

Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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