Is It Harmful To Feed The Baby While The Mother Is On Antibiotics?

MY DAUGHER WAS PERSCRIBED FLAGYL FOR A VAGINAL INFECTION AFTER CHILDBIRTH. THE BABY IS 6 WKS OLD NOW. THE PHARMACY TOLD HER TO PUMP AND GET RID OF BREAST MILK OR 8 HRS AFTER TAKING THE MEDS. THEN SHE CAN NURSE AGAIN BEFORE TAKING HER NEXT DOSE. FROM WHAT I AM READING ONLINETHEY DON T RECOMMEND THAT. WHAT DO YOU THINK. SHE IS TAKING 500MG 2 TIMES A DAY.