Does Azithromycin Interact with Birth Control?

Azithromycin does not significantly reduce birth control effectiveness. Unlike some antibiotics such as rifampin, azithromycin belongs to the macrolide class and doesn't induce liver enzymes that metabolize hormonal contraceptives. Clinical studies show no measurable decrease in estrogen or progestin levels when azithromycin is taken with birth control pills. However, gastrointestinal side effects like nausea or diarrhea from azithromycin could potentially interfere with pill absorption if severe. The CDC and most gynecologists recommend using backup contraception only with rifamycin-class antibiotics, not macrolides like azithromycin.

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