Does penicillin interfere with nuvaring (birth control)?

Potentially. Though the NuvaRing is depositing the contraceptive agent directly, there may be issues with the agent circulating through the liver and potentially making the NuvaRing less reliable. This would be more common in the broadspectrum penicillins such as ampicillin. When is doubt, use a back-up method and consult your pcp/gynecologist or pharmacist.

Related Questions

Does penicillin actually affect birth control?

Oral meds only. Oral antibiotics can interfere with oral contraceptive pill absorption when taken simultaneously. Penicillin given by shot (I.M.) does not impact the oral contraceptive pill. Read more...

Took penicillin in aug. Was sick in sep. No period. Period came 10/14 and lasted until 20. Been lightly spotting ever since. On birth control. Help?

Irregular menses. There are many different causes for alterations in amounts and nature of menstrual periods and in their regularity. If you had an infection that may have been the source. If this persists, or if you develop other symptoms please see a doctor and be evaluated. Read more...

What is the best birth control pill for someone with PCOS and a penicillin alergy?

GYN. Your own GYN would be the best person to provide you the information. Regardless the choice would not be changed because of your penicillin allergy since they are unrelated issues. Read more...
Birth control. Oral contraceptives with minimum 20 mcg ethinyl estradiol ( higher doses may be needed in some )and a progestin like desogesterel/drosperinone are used after discussing risks and benefits with patients. Discuss it more with your physician. Read more...