10 Best Immune Booster For Dogs 2025 in the United States

Zesty Paws Multivitamin Treats for Dogs are designed to support health, particularly focusing on immune health, joint support, and digestive wellness. The soft chews come in a chicken flavor, making them appealing to dogs. Each chew contains an 8-in-1 formula that includes antioxidants, probiotics, digestive enzymes, and ingredients like glucosamine and chondroitin for joint health. This makes them particularly beneficial for aging dogs or those with joint issues.

The inclusion of cod liver oil and vitamins A, C, and E also supports skin, coat, heart, and liver health, making these chews a comprehensive supplement for dogs of all breeds and sizes. The dosage is straightforward, with the amount depending on the dog's weight, and the chews can be easily divided between morning and evening feeds.

It is important to note that results can vary, and while many dogs may benefit from these chews, others may not see significant changes. Additionally, as with any supplement, it is advisable to consult with a veterinarian before beginning any new regimen, especially for dogs with specific health conditions or those on other medications. While these chews offer a wide range of benefits and cater to various health needs, some pet owners may find them a bit pricey compared to standard dog vitamins. Nevertheless, the comprehensive formula suggests they are a worthy investment for pet owners looking to boost their dog's health and immune system.

The Critical Immune Defense for Dogs & Cats by VetSmart Formulas is designed to support the immune systems of both dogs and cats. The product features a blend of four mushrooms (Turkey Tail, Reishi, Shiitake, and Maitake) and patented white turmeric root extract, which are known for their immune-boosting properties.

This combination helps promote normal cell growth and reduce inflammation, potentially improving your pet's quality of life and longevity by fighting off pathogens and supporting cellular health. It’s suitable for pets of all ages, making it a versatile option whether you have a puppy or an older pet.

The supplement comes in powder form, which can be mixed with food, making it relatively easy to administer. Developed under high standards by scientists and veterinarians in the USA, it should provide peace of mind regarding its safety and effectiveness. However, it is specifically noted for large dog breeds but is recommended for all breed sizes, which may be a slight confusion. Additionally, while the natural ingredients and absence of artificial additives are strengths, some pets might not enjoy the mushroom flavor. As always, it would be wise to consult your veterinarian before starting any new supplement regimen for your pet.