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Forum Name: Fertility

Question: the iud and antibiotics

 guitarchick25 - Sun Dec 09, 2007 11:30 pm

im a 25 year old female.. ive been on the iud merina for about 2 years and currently had to take antibiotics. i just read that antibiotics can make birthcontrol inefective. i had un proteced sex and im curious how big my chances are of being pregnant.. thanx for any advice given
 Debbie Miller, RN - Mon Dec 10, 2007 12:56 am

User avatar Hello,
You should have no greater risk than without the antibiotics. The primary way the IUD works is not hormonal - the hormone is an added bonus protection but IUDs without the hormone also have a very good success rate for preventing pregnancy.

Also, the problem with antibiotic use while on hormonal contraceptives has been somewhat disputed for most antibiotics. There are a few, such as Rifampin, primarily used for tuberculosis that can affect the birth control effectiveness but most have been found to not interfere. So, you really don't need to be overly alarmed - at least no more so than usual since all birth control except abstinence does have a small failure rate, especially when not used correctly. One advantage to the IUD is you don't get human error as a factor so your method works more consistently than some other methods.

Best wishes and Happy Holidays!

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