One (1) 30-Count Box - Purina Pro Plan Veterinary Diets Fortiflora Canine Nutritional Dog Supplement Probiotic supplement for the dietary management of puppies and adult dogs with diarrhea FortiFlora is the #1 probiotic brand prescribed by veterinarians; Assists in promoting a healthy immune system Contains a probiotic to promote and restore normal intestinal microflora Proprietary