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Estrogen and Progestin (Oral Contraceptives)
Why is this medication prescribed?
Oral contraceptives (birth-control pills) are used to prevent pregnancy. Estrogen and progestin are two female sex hormones. Combinations of estrogen and progestin work by preventing the release of eggs from the ovaries (ovulation) and changing the cervical mucus and the lining of the uterus. Oral contraceptives are a very effective method of birth control, but they do not prevent the spread of AIDS and other sexually transmitted diseases.
How should this medicine be used?
Oral contraceptives come in packets of 21 or 28 tablets to take by mouth once a day. To avoid upset stomach, take oral contraceptives with food or milk. Take the tablet routinely at the same time every day (e.g., after dinner or at bedtime) to help you remember to take the tablet regularly. Missing doses increases your risk of becoming pregnant.
When first starting on this medicine, use an additional method of birth control until you have correctly taken 7 days' worth of medicine.
If you have a 21-tablet packet, take one tablet daily for 21 days and then none for seven days. Then start a new packet.
If you have a 28-tablet packet, take one tablet daily for 28 days. The last seven tablets are a different color. These tablets are not birth-control pills; they contain iron (ferrous fumarate) or an inactive ingredient. You should take one tablet daily continuously for 28 days in the order specified in your packet, starting a new packet the day after taking your 28th tablet.
Follow the directions on your prescription label carefully concerning when to take your first tablet (on the first or fifth day of your menstrual period or on the first Sunday after or on which bleeding begins). Take the oral contraceptive exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. Do not stop taking this medicine without talking to your doctor.
If you have recently given birth, wait until 4 weeks after giving birth to begin taking oral contraceptives.
Before taking oral contraceptives, ask your pharmacist or doctor for a copy of the manufacturer's information for the patient and read it carefully.
Other uses for this medicine
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
What special precautions should I follow?
Before taking oral contraceptives,
What special dietary instructions should I follow?
Unless your doctor tells you otherwise, continue your normal diet.
What should I do if I forget a dose?
If you miss doses of your oral contraceptive, you may be at risk for becoming pregnant. Instructions about missed doses are different for different products. Carefully read the instructions in the manufacturer's information for the patient. If you have any questions, call your doctor or pharmacist. If you miss pills, you may need to use a backup method of birth control for 7 days or until the end of the cycle.
What side effects can this medication cause?
Oral contraceptives may cause side effects. Tell your doctor if any of these symptoms are severe or do not go away:
Some side effects can be seious. The following symptoms are uncommon, but if you experience any of them, call your doctor immediately:
Oral contraceptives may increase the risk of developing endometrial and breast cancer, gallbladder disease, liver tumors, heart attack, stroke, and blood clots. Talk to your doctor about the risks of taking this medication.
Oral contraceptives may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.
Keep this medication in the packet it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of emergency/overdose
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
What other information should I know?
Keep all appointments with your doctor and the laboratory. You should have a complete physical examination every year, including blood pressure measurements, breast and pelvic exams, and a Pap test. Follow your doctor's directions for examining your breasts; report any lumps immediately.
Before you have any laboratory tests, tell the laboratory personnel that you take oral contraceptives, as this medication may interfere with some laboratory tests.
If you miss one menstrual period and have taken your tablets as directed, continue taking them. However, if you miss one period and have not taken your tablets as directed or if you miss two menstrual periods and have taken the tablets as directed, call your doctor and use another method of birth control until you have a pregnancy test.
If you wish to stop taking oral contraceptives and become pregnant, use another method of birth control for at least 3 months after you stop taking the tablets to be sure that the medication will not harm the fetus. It may take a long time for you to become pregnant after you stop taking oral contraceptives, especially if you have never had a baby or if you had irregular, infrequent, or complete absence of menstrual periods before taking oral contraceptives. Questions should be discussed with your doctor.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
Last updated: Tue, 06 Jan 2009 00:20:03 GMT