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Date of last update: 9/5/2017.
Forum Name: Pharmacy & Drug Topics
Question: sulfa drugs and oral contraceptives
|non818 - Mon Oct 18, 2004 11:25 am||
I have been taking Sulfamethoxazole every day for the past 15 years. I had heard that this may change the effectivness of birth control pills, is this true? If it is, by how much, and what would be a better form of contraception?
Thanks for your time.
|Theresa Jones, RN - Thu Oct 21, 2004 5:30 am||
Certain antibiotics ( Sulfamethoxazole being one of them) can decrease the effectiveness of birth control pills. The exact percentage I am unable to say. You may want to consider using a back up method of condoms and spermacide and also talk to your doctor if he/she is unaware that you are taking Sulfamethoxazole.
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