Can antibiotics cause yeast infections?

Yes, taking a course of antibiotic can frequently lead to a yeast infection (fungal or vaginal candidiasis) infection. Antibiotics can alter the normal 'good' bacteria - often called 'flora' - that reside in the vagina. Candida -- a fungus -- also lives the vaginal area.

Usually, Candida does not cause symptoms, but some antibiotics may alter the normal growth of bacteria and lead to Candida overgrowth in the vagina.

Symptoms such as itching, irritation, pain with urination, redness of the vaginal area, or a white, curd-like or watery discharge may occur.

Vaginal yeast infection treatments like Monistat or Vagistat are available over-the-counter without a prescription.