While it is widely believed by the public that antibiotics interact with birth control pills, this is true for only a small handful of medications. The typical antibiotics that are taken for a sinus infection are not known to interact with the pill and should not decrease its effectiveness. There are still warnings on the labels for many antibiotics that have not been studied. This does not mean that they decrease the effectiveness of birth control, it just means that the question has never been addressed. The one antibiotic that does interact with hormonal contraception
is rifampin. It does so by accelerating the breakdown of the birth control hormone preventing it from performing its function.
I suggest that you schedule an appointment with your primary care physician
. He or she can listen to your symptoms and perform a thorough physical examination. If your doctor
thinks that you may have a sinus infection, then you may get a prescription for an antibiotic. It is always pertinent for you to disclose all the medications you are taking to your doctor before you receive another one. I am confident that whatever antibiotic is chosen, your doctor will verify that it will not interfere with your birth control pills. Good luck.