Pet Wellbeing BM Tone-up Gold is a vet-formulated, natural supplement designed to support the canine and feline digestive system when there is occasional imbalance that results in diarrhea or loose, runny stools. It includes herbal "astringents" that naturally tighten and tone the bowel lining. BM Tone-Up Gold provides support for both the immune system and the gastrointestinal tract and promotes normal transit time of food and water through the gut, less frequent urges, and more solidly formed bowel movements.