Before taking it, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details. Older adults should avoid taking probiotics. This is because this group is typically more sensitive to complications. Drink plenty of clear fluids to help prevent dehydration caused by diarrhea. This probiotic is safe for most healthy adults to use daily. Consult with your doctor and stop immediately if you experience side effects.