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Re: [Birth Control] antibiotics

From: Patti Tessler, Family Nurse Practitioner (anonymous@obgyn.net)
Mon, 10 Sep 2001 20:11:52 -0500 (CDT)


At Thu, 6 Sep 2001, Jane wrote: >
>To whom it may concern,
>
>Recently I was on amoxillin (500 mg) for an ear infection. During this
>period of time on the last day of the antibiotics I engaged in sexual
>intercourse using only tricyclen 28 as a birth control method as well as
>my partner pulling out. Am I at high risk of pregnancy?
>Please respond asap
>Jane

As mentioned in the archives, there is some debate about whether antibiotics will decrease the effetiveness of oral contraceptives. Controlled studies say they won't, but some clinicians believe that they have seen such an interaction. The pill has a certain rate of failure, and antibiotics are commonly used, so it has been difficult to clarify whether antibiotics will decrease the effetiveness of the pill.

The fact that you did something to reduce the risk of pregnancy (pulling out) helps reduce any possible risk. (A condom would have been more effective, though.) If your period is late, you should get a pregnnacy test. If not, I suggest you continue your pills as usual.

--
Patti Tessler, BSN, MSN, RN, CS
Family Nurse Practitioner





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