Immune boosters for dogs

Immune boosters for dogs – natural protection for everyday health

Is your dog getting sick more often, feeling tired, or taking longer to recover? It might be time to consider an immune booster for dogs – especially one made from natural, safe ingredients like medicinal mushrooms and colostrum for dogs.

Supporting the immune system is especially important for senior dogs, dogs with allergies, or those recovering from illness, surgery, or cancer. On this page, you'll find carefully selected immune boosters for dogs with ingredients backed by science – but gentle enough for everyday use.

Why choose a natural immune supplement?

Functional ingredients like turkey tail mushroom for dogs, reishi for dogs, shiitake, maitake, and cordyceps do more than stimulate immunity. These powerful mushrooms support cell protection, reduce inflammation, and help restore energy and balance.

Meanwhile, colostrum – rich in antibodies and growth factors – helps strengthen the immune system, repair the gut, and reduce allergic responses. It's especially beneficial for puppies with developing immunity and dogs facing chronic inflammation or immune imbalance.

When does your dog need immune support?

• Gets sick often or recovers slowly
• Is dealing with chronic inflammation or skin issues
• Has allergies or autoimmune conditions
• Is recovering from surgery or medication
• Is a senior dog with reduced vitality
• Is a puppy building their immune system
• Is undergoing cancer treatment, such as for canine lymphoma or mast cell tumors

A well-designed dog immune supplement can make a difference – supporting the body from within, naturally.

What makes K9 INU® immune boosters unique?

Our products go beyond basic dog vitamins. Each formula is built to strengthen and balance the immune system with functional, natural ingredients:

• Turkey tail mushroom for dogs, reishi, shiitake, maitake, cordyceps – support immune cells, help dogs with tumors, and reduce oxidative stress
• Colostrum for dogs – strengthens gut immunity, supports recovery, and helps reduce allergies
• Vitamin E – a key antioxidant that protects against cell damage
• Brewer’s yeast – a natural source of B-vitamins and prebiotics for immune and metabolic health

These ingredients work together to help your dog stay strong, energized, and resilient.

Trusted immune support for senior dogs

As dogs age, their immune systems become less effective. They may become more prone to infections, slower recovery, or even tumors in dogs. That’s why immune boosters for senior dogs should do more than protect – they should help the body rebuild. Our products are made with GMO-free, safe ingredients you can use with confidence every day.

A better way to boost your dog’s immune system

While many dog owners look for general vitamins for dogs, not all supplements are designed to actually increase dog immune system response. The K9 INU® range focuses on natural, active ingredients that do more – helping dogs heal, resist illness, and thrive, no matter their age or condition.

Why choose K9 INU®?

• Developed with veterinary expertise
• Powered by medicinal mushrooms and colostrum
• Free from artificial additives and fillers
• Backed by real results from dog lovers worldwide
• Safe for senior dogs, allergy-prone dogs, and even those with serious conditions like osteosarcoma in dogs

Don’t wait until your dog is sick to act. Support their immune system every day – with safe, effective, and natural formulas made for dogs like yours.