Tomlyn's Loose Stool Remedy Firm Fast for dogs and cats helps owners manage occasional loose stools. Pet parents should anticipate results within 48 hours. It supports pets with loose stools in several ways. It contains ingredients that help absorb water from loose stools, soothes the intestinal lining, and slow intestinal motility. Additionally, it contains a probiotic that helps displace harmful bacteria and supports the body's immune defenses. The product can be used once loose stools are seen or ahead of an inciting event, such as travel or boarding.