All three of our dogs get Total-Zymes and Total-Biotics with every meal to aid digestion and strengthen their immune systems. Our yellow lab has always had a delicate digestive system subject to bowel upsets due to stress - the lawn service cutting the grass, thunderstorms, etc. Since we've had him on Total-Zymes and Total-Biotics, his upsets have been few and far between. We've tried other brands, but Total-Zymes and Total-Biotics work best and are most cost effective. We love these products! Thanks!