Cancer is now the #1 killer of dogs and cats.

Protect Your Pet from Life-Threatening Diseases with a Strong Immune System.

A safe, all-natural immune booster that can add years to your pet's life.  Made in the USA.

Critical Immune Defense for Dogs and Cats

Boosts immune system
Reduces inflammation
Promotes normal cell growth
Protects against toxins in food,
water & environment
Supports long-term health in dogs and cats

Benefits:

Boosts the immune system
Reduces inflammation
Promotes normal cell growth
Protects against toxins
Supports long-term health

Limited Supply Coming Soon!
Sign up to be notified when available.

Cancer is now the #1 killer of  dogs and cats.

Protect Your Pet from Life-Threatening Diseases with a Strong Immune System.

  • Boosts the immune system
  • Reduces inflammation
  • Promotes normal cell growth
  • Protects against toxins in food, water & environment
  • Supports long-term health in dogs and cats

This special product is being manufactured in small batches, so our supply is limited. Our next batch will be available soon! Sign up now to be notified when Critical Immune Defense becomes available.

A safe, all-natural immune booster that can add years to the life of your pet.
Made in the USA.


New Supply Available Soon!
Sign up with email to be notified when Critical Immune Defense is available.

Cancer Rates Are Skyrocketing

More dogs and cats are being diagnosed with cancer than ever before. According to the Veterinary Cancer Society, almost 50% of all dogs and 32% of all cats over the age of 10 will develop cancer. Younger pets are also increasingly at risk. “Cancer is affecting our pets at alarming rates, and it is devastating for both the families of these pets as well as the pets themselves. I am seeing this in my practice on a regular basis.” - Dr. Jennifer Edwards, Veterinarian at Ponemah Veterinary Hospital in Amherst, New Hampshire.

“One of the things that can be helpful is supporting your pet’s immune system with antioxidants to help its body to use its own natural defenses against disease. Certain mushrooms and turmeric may be beneficial in helping your pet to boost its immune system to fight diseases,” explains Edwards. According to Dr. Edwards, another way to protect your pets is with all-natural health supplements.

Pet Owners CAN Make A Difference

“It is the responsibility of the pet owner to do everything possible to minimize the risk of cancer in their pets. This includes a sensible lifestyle with sufficient exercise, weight management, drinking clean water, healthy food intake, and avoiding toxins.” – Dr. Shawn Messonnier, Veterinarian and Founder of Paws & Claws Animal Hospital in Plano, Texas. “Giving your pets a high-quality antioxidant supplement is highly recommended to further reduce the risk of cancer.”

Mushrooms = Anticancer Activity

“As a pet lover, I think it makes sense that the compounds in mushrooms be included in your pet’s diet or included by nutritional supplements. Certain mushrooms contain agents with anticancer activity and immunomodulatory properties that may help fight cancer and certain other diseases.” - Dr. Frank Markland, Professor of biochemistry and molecular medicine at the University of Southern California Keck School of Medicine.

THE DOCTORS AGREE.

Dr. Frank Markland, Professor of Biochemistry and Molecular Medicine at the University of Southern California Keck School of Medicine

Dr. Shawn Messonnier, Veterinary Medicine and author of "The Natural Vet's Guide to Preventing and Treating Cancer in Dogs"

Dr. Jennifer Edwards, Ponemah Veterinary Hospital

Introducing Critical Immune Defense

Strengthens the immune system
Boosts the growth of "good" cells that fight disease and are essential for your pet’s long-term health.

Protects against diseases
Eliminates harmful pathogens such as bacteria and viruses that cause inflammation and infection.

Promotes normal cell growth
Improves the immune system’s ability to monitor cell development and eliminate abnormalities.

Works with prescription medications
Great for pets on chemotherapy treatment, prescription steroids, pain medication & more.

Can extend your pet's life
Includes powerful antioxidants that reduce cellular aging and promote greater health & longevity.

Backed by science
Asian cultures have used these all-natural ingredients to treat diseases and cancers for 1,000's of years.

4 Medicinal Mushrooms That Can Help Protect Your Pet from Cancer  

Cancer is now the #1 killer of dogs and cats. Research shows that medicinal mushrooms that have been used in Asia for centuries to combat disease and promote longevity may prove effective at inhibiting abnormal cell growth in dogs and cats.

This all-natural supplement is a unique blend of four powerful mushrooms, plus concentrated white turmeric extract and a potent vitamin cocktail that boosts “good cell” development and strengthens your pet’s immune system. These mushrooms are extremely high in antioxidants and other vital biologically active compounds that have been proven to strengthen the immune system and promote longevity:

Turkey Tail Mushroom

This colorful mushroom has been used for centuries in Asia to treat disease and contains high levels of active compounds that have been proven to inhibit the growth of cancerous tumors.

  • Delivers significant amounts of tumor-fighting Polysaccharopeptides (PSPs)
  • Approved by the United States Food & Drug Administration for use in treating prostate and breast cancer in humans
  • Proven to delay the growth of cancerous tumors in dogs and improve their survival rate

Reishi Mushroom

This woody fungi is known as one of the top natural superfoods and has been used for 1000s of years to fight inflammation, cancer, heart disease, hormonal imbalances and more.

  • Contains beta-glucans that increase the immune system’s T-cell levels
  • Lowers inflammatory responses caused by stress, poor diet, and other environmental factors
  • Contains ganoderic acids that have been shown to lower cholesterol levels and blood pressure

Shiitake Mushroom

According to the Journal of Nutrition, shiitake mushrooms provide antiviral, antibacterial and antifungal protection and help to control blood sugar and reduce inflammation.

  • Contains all 8 essential amino acids as well as linoleic acid, an essential fatty acid
  • Used in Japan to treat heart disease, hepatitis, high blood pressure, and infectious diseases

Maitake Mushroom

Maitake mushrooms are loaded with vitamins and active ingredients that stimulate the immune system and promote natural hormone balance and healthy cell growth.

  • Contains beta-1, 6 glucan polysaccharide components that stimulate the immune system and reduce abnormal cell growth
  • Used in Asia to help minimize the toxic effects of radiation and chemotherapy treatment

Plus Our Patented White Turmeric Root Extract

Turmeric has been used for centuries to reduce pain and inflammation. Its active ingredient, curcumin, has proven to be effective at blocking the growth of certain cancers and protecting against neurodegenerative diseases, arthritis, cardiovascular risks and liver damage.

Our proprietary extract is six times more bioavailable than standard turmeric root, which means it’s more effectively absorbed into your pet’s body and they need less of it to get the same effect. It’s also colorless and milder tasting, making it easier to handle -- and tastier for your pet! No more turmeric stains!

“The difference in his health and energy is amazing!”

★★★★★
My beautiful dog Hooch was diagnosed with cancer a few months ago. I’ve been using Critical Immune defense combined with your probiotic for about a month and the difference is amazing! Hooch seems to be in better spirits and he is eating again. He saw me taking one of my other dogs for a walk and came to the fence and put his nose on the leash like “I want to go too.” I know he is feeling better, and I feel that the Critical Immune Defense and the Probiotic are working!

- Kelly B.

★★★★★
My dog had been on steroids for a back injury and developed a bacterial skin infection as a result. I was concerned he might have immune system problems. This product is made in the USA and is all natural, and I can use it with his allergy meds & antibiotics. He loves the taste, even licks the bowl to get it all. I think this product has helped him very much to combat this bacterial infection. He is 11 yrs old and I want him to live a long, healthy life.

- Judy W.

★★★★★
We highly recommend Critical Immune Defense! Our 8 year old Golden Retriever gobbles it up and we feel so good knowing it's an all-natural product (and made in the USA). Thank you for making it so easy to boost our dog's immune system!

- Jesse & Todd L.

★★★★★
My dog loves Critical Immune Defense. No problem with taste and the ingredients are great. He’s an old timer -- 15 ½ years old -- and 70 pounds and he’s doing well despite diabetes and a neurological impairment. He still goes for his walks, albeit, very slowly.

- Tamara W.

Ingredients:

Usage Directions:

Not only is it easy to use (just sprinkle it over your pet’s food) -- your pet will love the taste!

The all-natural solution. Trusted by veterinarians.

Originally designed for veterinarians, VetSmart Formulas delivers the clinical-strength, quality and efficacy veterinarians demand of solutions they provide and recommend.

Critical Immune defense is 100% safe to use, has NO side effects, and can be used in conjunction with chemotherapy, steroid treatments and other medications.

  • No artificial colors
  • No artificial flavors
  • Wheat-free

Made in the USA to the highest quality standards.

VetSmart Formulas is made in the USA in FDA audited facilities which adhere to cGMP and are audited by Underwriter Labs.

Every ingredient is carefully inspected and tested before processing, ensuring a consistently safe, high-quality product for your beloved dog’s health.

Critical Immune Defense for Dogs and Cats

Coming Soon - Limited Supply Only!
Sign up with email to be notified when Critical Immune Defense is available.

Limited supply available soon! Sign up now to be notified when Critical Immune Defense becomes available.

Frequently Asked Questions

Is this safe to use with other products?

VetSmart Formulas were originally designed for veterinarians. This means they deliver the clinical-strength quality and efficacy veterinarians demand in products they provide and recommend. They are wheat-free and contain no artificial colors or flavors. Moreover, it can be used along with most products and prescription medications available for pet consumption.

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Will it work for my dog too?

Thousands of dogs in all sizes and weights continue to benefit every month from VetSmart Formulas to boost their immune system and overall health.

If your dog has a situation similar to the other dogs you may have read about in our reviews, then this product may likely help your dog too.

Critical Immune defense helps protect your pet against:

  • Abnormal cell growth
  • Harmful pathogens such as bacteria, viruses, fungi, and parasites
  • Inflammation
  • Infection
  • Cardiovascular disease
  • Hormone imbalance
  • High blood pressure
  • Arthritis
  • Liver damage

… and more.

That being said, every dog is unique and unfortunately there are some dogs that have problems this formula cannot solve. This is exactly why we offer a 30 day risk-free money back guarantee.

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How much does it cost for shipping?

Great news... not only do we offer a 30-day money back guarantee, we also provide free shipping on all orders of 3 units or more of Critical Immune defense.

If you’re trying this product for the first time and only want to start with 1 bottle, we only charge you our cost of $5.95 for postage and handling.

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What does my pet’s immune system actually do?

We feel this veterinarian does a great job of explaining the immune system in a simple and effective manner:

“The immune system acts like a nonstop housekeeper”, describes Dr. Donna Raditic, an American College of Veterinary Nutrition (ACVN) diplomate who does consulting on nutrition and integrative veterinary medicine in Athens, Georgia. “It identifies potentially harmful pathogens like bacteria, viruses, fungi, and parasites, then works to eliminate them before they can do harm. When other cells are aging or functioning abnormally—such as a cancer cell reproducing too rapidly—the immune system attempts to step in and maintain proper physiological function and balance,” Raditic explains.

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My dog or cat is not that old so why do I need to give them this product now?

The time to start any preventative action is before your pet has an issue. As dogs and cats age, their immune systems are not as strong, and they are more susceptible to diseases. A weak immune system in dogs and cats can cause a variety of diseases such as infections, diabetes, osteoarthritis and cancers. Be a proactive pet owner and start boosting your pet’s immune system while they are younger and BEFORE they have an issue.

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My pet has a sensitive stomach. Will this product cause issues?

Not likely. However, if you know (or think) that your pet has a sensitive stomach ease into the product slowly. Start with 1/3 or 1/2 the recommended dose and work your way up to full dose over a 1-2 week period. If you notice any issues, simply stop using the product or cut back to find the level that works for your pet.

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My dog is taking VetSmart Formulas Hip + Joint Complex and the VetSmart Probiotic. Can I use Critical Immune Defense along with them?

Yes, absolutely! There is no problem using all the products together. And… good for you for being on top of your pet’s health!

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My pet currently has cancer and is taking chemotherapy medications. Can I use Critical Immune Defense along with the chemotherapy?

Yes. Our product is all-natural and designed to be taken with chemotherapy medications. It will help boost their immune system that might be compromised by the chemotherapy medications. If your pet is being treated for any serious medical condition, we always suggest that you discuss the use of any supplements with your veterinarian. You can simply bring the bottle to them during a visit or take a photo of the label and share it with your vet.

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My pet is taking prescription steroids or pain medications for another health issue. Can I use Critical Immune Defense along with the medications?

Yes. Our product is all-natural and designed to be taken with prescription medications. It will help boost their immune system that might be compromised by the medications. Again, we always suggest that you discuss the use of any supplements with your veterinarian. You can simply bring the bottle to them during a visit or take a photo of the label and share it with your vet.

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My pet is so old already. Is it too late to start and will it really make a difference?

No pet is too old to start using an all-natural product that will help them live a better and longer life! It’s similar to someone who starts exercising at 80 years old. Every bit helps! Start now and you will help to prolong your pet’s lifespan!

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I love my pet just like a family member. Will Critical Immune Defense prevent them from getting cancer?

We can’t guarantee that, but what we do know is our product is very effective at boosting your pet’s immune system which helps fight all types of diseases such as cancers. The research on the ingredients in Critical Immune Defense is very extensive and Asian cultures have used these ingredients effectively for many centuries.

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My pet is a picky eater. How do I give them the product, and does it taste bad?

Critical Immune Defense is very easy to give to your pet. It’s a powder that you simply sprinkle on their food. It has a natural hypo-allergenic chicken flavor that appeals to both dogs and cats, and most pets love the flavor. We offer a 30-day money back guarantee if they don’t like the taste.

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You mentioned that almost half (47%) of dogs and 33% of cats over the age of 10 years old get cancer. Those statistics seem very high. Where are they from?

We agree. The numbers are frighteningly high! These statistics were published by the Veterinary Cancer Society. There is so much research and so many clinical studies on the percentages of dogs and cats that get cancer. You can Google it and see the various studies online.

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Are Turkey Tail Mushrooms from live turkeys?

No, they are not. Turkey Tail Mushroom, also known as Coriolus Versicolor, is a common type of mushroom that has the shape and color of a turkey tail. What is unique about the Turkey Tail Mushrooms that we use in Critical Immune Defense is the mushrooms are harvested at a very young age when the polysaccharide K (PSK) and peptides are the most concentrated, and these active compounds boost the immune system. As a reference, polysaccharide K (PSK) is an approved mushroom product to treat cancer in Japan.

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I tried Critical Immune Defense, but I did not notice a difference in my pet. Why not?

Here’s a way to think about it. High blood pressure is known as the “silent killer.” That’s because people may have high blood pressure for many years and not notice it. However, because there are no visible signs does not mean nothing is happening in your body. The same is the case with boosting your pet’s immune system. You may notice that your pet is more lively or peppy, or you may not notice anything at all. Keep in mind that not seeing a visible result does not mean the product is not working.

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I’ve seen other Turkey Tail products for pets online. Is your product any better?

We love this question! Our product is one of the most powerful immune boosters for pets on the market. We have combined a blend of four mushrooms along with turmeric and vitamins to create what we feel is the absolute best immune booster for pets. Our ingredients are standardized to the highest potency and the product is veterinarian strength. We invite you to compare the labels and the ingredients in our product to any others on the market to see for yourself!

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I may have given my pet too much product, what do I do? My pet overdosed what do I do? I think my pet is having an allergic reaction, what do I do? I gave my pet some of your product and it is behaving oddly, what do I do?

Call your vet immediately and explain the situation. If your vet is not available, contact the ASPCA Animal Poison Control Center at 888-426-4435.

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Critical Immune Defense

Coming Soon - Limited Supply!

30 Day Money Back Guarantee

Made in the USA in FDA Audited Labs.

Still have questions?

Talk to us on Facebook Messenger
Or give us a call at 888-212-8400 Mon-Fri 9:00 to 5:00 PST

30 Day Money Back Guarantee

Made in the USA in FDA Audited Labs.

Still have questions?

Talk to us on Facebook Messenger
Or give us a call at 888-212-8400 Mon-Fri 9:00 to 5:00 PST