Conditioning and Energizing for Multi-Cat Households. This Iams ProActive Health formula has PreBiotics that work inside the digestive tract to promote healthy digestion and strong defenses. Healthier inside. Healthier outside. Vet-recommended Iams Multi-Cat with Chicken and Salmon provides 100% complete and balanced nutrition for all adult cats in your household. It starts with high-quality protein-rich sources like chicken, salmon and egg for building lean muscles and improving overall body condition. Beets, whole grains and corn support the digestive system and reduce hairballs. It's enriched with amino acids for energy, vitamins and minerals, taurine for a strong heart and rich fatty acids like omega-3s for a luxurious coat. Plus, each delicious crunchy kibble breaks up plaque and tartar that can lead to bad breath and gum disease.