Best Dry Dog Food for Immune Support of 2025

Iams Immune Health Dog Food is a dry dog food that provides 100% nutrition for adult dogs without any artificial preservatives or flavors. This dog food is recommended by veterinarians and contains fatty acids that support healthy skin and coat, as well as calcium that supports strong bones and joints. The live probiotics in this dog food also help support your dog's digestive health. Additionally, Iams Immune Health Dog Food provides an antioxidant boost with a blend of Vitamins C + E to support a strong immune system.

IAMS Immune Health Dog Food offers essential support for your dog’s immune system with a powerful blend of antioxidants, including vitamins C and E. This formula features real chicken as the primary ingredient, ensuring your pet gets high-quality protein for their health. Additionally, it includes a unique medley of superfoods like flaxseed, pumpkin, and spinach, which provide vital nutrients. The crunchy kibble not only promotes dental health by helping to reduce plaque but also ensures your dog gets 100% nutrition for their overall vitality and well-being.

Solid Gold Hund-N-Flocken is a natural and holistic dry dog food that promotes gut health, immune support, and a shiny coat for dogs of any breed and age. It contains antioxidants, vitamins, and omega 3 and 6 fatty acids from salmon fish oil for skin, coat, and immune system health. The 90 million probiotics per pound support digestive health, balanced gut flora, and immunity. It has the best natural nutrients from pasture-raised lamb, healthy brown rice, and potato-free whole grains. Additionally, it features 20 vitamin and nutrient-rich superfoods to nourish your pet.

Royal Canin Small Puppy Food is a dry dog food formulated for puppies from 2 to 10 months old with an expected adult weight of 4.4-22 lb. This dog food has clinically proven antioxidants that help support the healthy development of your puppy's immune system. The kibble is tailored for small jaws and picky eaters and meets the high energy needs of small breed dogs during their short growth period. The food is enriched with DHA, an omega-3 fatty acid that is scientifically proven to help support a puppy's brain development. This dog food also contains a combination of prebiotics and highly digestible proteins that help promote a healthy balance of intestinal bacteria and optimal stool quality.

Nulo Freeze Dried Raw Dog Food offers a natural grain-free formula with at least 80% meat, organs, and bone along with fruits and veggies. It contains patented GanedenBC30 probiotics that help food sensitive dogs digest food better. This dog food is available in five and thirteen-ounce bags and comes in different flavors such as beef, duck, lamb, salmon, and turkey. It is also grain-free, which helps with allergy relief and weight control.

Wellness Complete Health natural pet food offers an optimal balance of nutrient-rich whole foods to fulfill the unique health needs of your dog. The food is made with carefully chosen, authentic ingredients for everyday health. The expertly selected ingredients and added nutrients support immune health, energy levels, joint and bone health, and healthy skin and coat. The crunchy kibble has no meat byproducts, fillers, or artificial preservatives. This high-quality protein with wholesome grains like oatmeal is made in the USA using only the finest globally sourced ingredients. Wellness also offers recipes for puppy, adult, and senior dogs as well as grain-free dog treats, meal toppers, and wet food options too.

Nulo Adult Dog Food is designed to keep your dog healthy and active. The turkey, trout, and spelt recipe is packed with antioxidants and probiotics that support digestion and bolster the immune system. With high levels of animal-based proteins, this food promotes lean muscle growth, ensuring your dog remains strong. The inclusion of ancient grains helps your pet feel full and maintain a healthy weight, avoiding unnecessary fillers. Made in the USA, this kibble is free from corn, wheat gluten, soy, and artificial additives, making it a safe choice for your furry friend.

IAMS Adult Minichunks Small Kibble High Protein Dry Dog Food with Real Chicken, 30 lb. Bag is made with high quality animal protein and no artificial preservatives, flavors or fillers, for complete and balanced nutrition. It provides tailored nutrition to your dog's age, size, and dietary needs, and is made in the USA with the finest ingredients from around the world. Reviews from customers indicate that their dogs love the food, and it has improved their digestion and immune system. However, some customers have experienced delivery issues, and the price has gone up significantly.

Royal Canin X-Small Puppy Dry Dog Food is specially formulated for extra-small breed puppies up to 10 months old with an expected adult weight of no more than 8 lb. It meets the high energy needs of extra-small puppies with key nutrients needed during their short, intense growth period. The exclusive blend of antioxidants and vitamins provides immune support. The specialized extra-small kibble designed for miniature and toy dogs with tiny jaws and picky appetites. The specifically tailored blend of fibers promotes optimal stool quality.

Blue Buffalo Senior Dry Dog Food is a high-quality, natural dog food designed for senior dogs. This dry dog food features real chicken as the first ingredient, which helps build and maintain healthy muscles. It contains glucosamine and chondroitin to support joint health and mobility, as well as antioxidants, vitamins, and minerals to support immune system health. BLUE Life Protection Formula dog food has no chicken (or poultry) by-product meals, corn, wheat, soy, artificial flavors, or preservatives.