Medical Questions > Womens Health > Birth Control Forum

do topical antibiotics like eye drops effect birth control?

User Profile
Hello. I am on Tri-Sprintec. I have been told injesting anti-biotics reduces effectiveness. However, does that include topical antibiotics, such as eyedrops? I was recently given Tobramycin Opthalmic Solution USP. Does this still reduce the effectiveness?
If so, how long do I have to wait before the effectiveness is back, since I haven't been taking antibiotic pills, just topical??? Thanks for the quick response!

Did you find this post helpful?

User Profile
replied June 4th, 2012
Birth Control Answer A35655
Welcome to ehealthforum,
Usually systemic forms (oral antibiotics or injectable forms) can affect the efficacy of your birth control pills. Topical antibiotic use should not affect the efficacy of your birth control. Wait and watch for your withdrawal bleeding/periods. Use back-up protection for additional protection if you are worried about pregnancy, and avoid having unprotected sexual contact if you are not ready for pregnancy. Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet and lifestyle.
Take care.

Did you find this post helpful?
Must Read
Birth control is helpful in preventing pregnancy. Need to know more about birth control? Start here to learn more about popular methods of birth control....
You have many birth control options. Each works differently. What are the choices and what should you consider in order to help you make your decision? ...
Each method of birth control comes with risks to your health. What are the general problems you could encounter?...
DISCLAIMER: "Ask a Doctor" questions are answered by certified physicians and other medical professionals. For more information about experts participating in the "Ask a Doctor" Network, please visit our medical experts page. You may also visit our Birth Control , for moderated patient to patient support and information.

The information provided on eHealth Forum is designed to improve, not replace, the relationship between a patient and his/her own physician. Personal consultation(s) with a qualified medical professional is the proper means for diagnosing any medical condition.