I talked to someone who got a horrible “C. Diff” bowel infection from the antibiotics, even tho’ she was taking probiotics. I relayed my concerns to the pharmacist at National Jewish, and she said to ‘double up’ on the probiotics if the stools even started to become a little loose or more frequent. She said to take two Jarro-Dophilus capsules three times a day on an empty stomach before meals. I also eat yogurt with 6-8 live cultures in it, a minimum of twice a day.