StressGuard, 4 L / 1 fl. gal. StressGuard is the premium slime coat protection product StressGuard will reduce stress and ammonia toxicity whenever handling or transporting fish StressGuard binds to exposed protein in wounds to promote healing of injured fish and to reduce the likelihood of secondary infection StressGuard is compatible with all medications that are not copper based StressGuard does not coat resins or clog filtration like competing slime coat type products can