A 37-year-old female asked:
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can cefdinir interact with birth control pills by decreasing effectiveness? can it cause spotting while taking cefdinir and the pill? thanks

1 doctor answer
Dr. Robert Kwok
32 years experience Pediatrics
Cefdinir likely okj: The current thinking is that except for rifampin, other commonly-used antibiotics (such as cefdinir and many others) do not alter the effectiveness of birth control pills. This is likely presuming a person is not sick with vomiting or rapid diarrhea, or some other condition that decreases the absorption of a swallowed pill. One can look up: http://www.ncbi.nlm.nih.gov/pubmed/12063491
Answered on Feb 15, 2020
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