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- $Unique_ID{BRK02042}
- $Pretitle{}
- $Title{Antibiotics and Their Effects on Oral Contraceptives}
- $Subject{oral antibiotics oral antibiotic birth control pills birth control
- pill oral contraceptive oral contraceptives OC's pregnancy contraception
- tetracyclines tetracycline ampicillin estrogen breakthrough bleeding progestin
- medications medication medicine medicines smoking vitamins vitamin C fertility
- conception drug interactions drug interaction pharmacist pharmacy prescription
- prescriptions}
- $Volume{}
- $Log{}
-
- Copyright (c) 1993 Tribune Media Services, Inc.
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- Antibiotics and Their Effects on Oral Contraceptives
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- QUESTION: I was given some oral antibiotics for skin infection by my
- dermatologist. My girl friend warned me that taking this medicine might
- interfere with my birth control pills and reduce the protection. That's what
- her doctor told her. Is this true? It doesn't make any sense to me, and so I
- hope you can help clear up this situation for me.
-
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-
- ANSWER: It depends upon the type of birth control pill (oral contraceptive or
- "OC's") you are taking as well as the kind of antibiotic that was prescribed
- for your infection, but your girl friend may be right. Many interactions
- exist between different classes of medications, and it is true that certain
- antibiotics, tetracyclines and ampicillin for example, may reduce the
- effectiveness of OC's that contain estrogen. Another undesirable side effect,
- breakthrough bleeding, is also possible. Some of the newer OC's consist only
- of progestin, and if this is the type of preparation you are using, there is
- less for you to worry about, for this same interaction has not been
- demonstrated with these pills. However, whenever you are taking more than one
- medication (and OC's are medications), you should discuss all possible
- interactions with your physician. It is easy to forget that birth control
- pills are medications, when informing your dermatologist about all the
- medicines you are currently taking. Another very knowledgeable person about
- medication interactions is your pharmacist, and if you do obtain all your
- prescription needs from a single pharmacist, it is likely that your record
- there will reveal possible conflicts.
- If you are going to have to continue with your antibiotic prescription
- for a long course of therapy, you might be well advised to consider the use of
- an additional measure of protection if you do not wish a pregnancy. In
- addition to antibiotics, and some other medications, heavy smoking and high
- doses of vitamin C (1000 milligrams or more daily) are also possible sources
- that can reduce the effectiveness of your birth control pills.
-
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-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-