Can metronidazole gel 0.75% cause unilateral non cyclical breast pain? pain stopped when i discontinued use. no other findings on examination by g.p.

Metronidazole gel: This should not be producing changes in your breasts. Your mammogram must have shown an abnormality if it resulted in a biopsy. Do you appreciate any changes in your breasts? Have you been on any other medications? If everything has been negative would follow up with your primary care doctor very carefully. They sound quite thorough.