Does zithromax affect the nuvaringLearn about the birth control vaginal ring (NuvaRing) . . . . Anti; Antibiotic 2; Anyone; Apple; Augmentin; Away 2; Azithromycin . . . . . Best Answer: Antibiotics affect oral contraceptives, shouldn't affect Nuvaring. . . . . . . . . . . . . 1/18 — Could antibiotics affect my period? 1/18 — . Best Answer: Nuva Ring is a hormone based form of birth control just like taking the pills, and this drug will interfere with its effectiveness. If you are tak... more