Probiotics are "good" bacteria that live in the digestive system of animals. These beneficial bacteria help to keep the digestion and immune systems healthy by balancing out "bad" bacteria in the GI tract.¹

Active9™ probiotics are canine-specific probiotics developed just for Kirkland Signature dog food formulas. Active9 probiotics are derived from probiotic strains naturally found in the GI tract of canines and are proven to survive in the digestive system of dogs. Probiotics are also beneficial to cats, and are added to each Kirkland Signature cat food formula.

For maximum benefit, probiotics must be viable, or alive and able to multiply. Kirkland Signature adds probiotics after the cooking process, which would otherwise kill beneficial bacteria. Each cup of Kirkland Signature pet food provides live, active cultures to help support healthy digestion.