Top 5 Best Antioxidants for Dogs

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The best antioxidants for dogs improve your pet’s overall health. Antioxidants help neutralize free radicals to keep them from damaging the cells. Because it’s important to be informed on how the best antioxidants for dogs can benefit your pet, I have compiled a list of the following antioxidants for dogs reviews and ratings to help you choose the best one.

The 5 Top Dog Antioxidants

Editor’s Picks Brand Rating *
Best Choice VETRISCIENCE Laboratories Antioxidant Support For Dogs ♥♥♥♥♥
Premium Pick NutraZeta Premium Antioxidant Supplement for Dogs ♥♥♥♥♥
Best Value Vetoquinol Select Antioxidant for Dogs and Cats ♥♥♥♡♡
Runner Up Nutrition Strength Immune Support for Dogs Plus Antioxidant ♥♥♥♥♡
Honorable Mention Vet Classics Canine Antioxidant Formula with Coenzyme Q-10 ♥♥♥♥♡
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* Ratings are determined using our specialized rating system.

As we get older or become challenged by disease, antioxidants can support the body’s immune system, and the same goes for our beloved pets. Read on to discover the best antioxidants for dogs available on the market today.

★ Best Choice
Best Choice for Best Dog Antioxidant: VETRISCIENCE Laboratories Antioxidant Support For Dogs

VETRISCIENCE Laboratories Immune Health Supplement for Dogs with Antioxidant Support is the best antioxidant for dogs because it supports immune health, contains vitamins and minerals, and the bottle contains 120 capsules for long-term use.

The VETRISCIENCE Laboratories Immune Health Supplement for Dogs with Antioxidant Support is a formula for dogs over 20 pounds and contains vitamins, minerals, and 23 powerful antioxidants, including coenzyme Q-10 for dogs. The formulation is comprehensive and includes vitamins A, B6, C, and E. It includes the minerals of copper, magnesium, molybdenum, selenium, and zinc. It has the antioxidants of alpha-lipoic acid, beta-carotene, coenzyme Q-10, catalase, hesperidin, L-cysteine, L-glutathione, L-lysine, pyridoxine, quercetin, rutin, and super oxide dismutase. The inactive ingredients are cellulose and vegetarian leucine.

Some ingredients are enteric-coated to protect them from destruction by stomach acids and allow them to pass through intact for absorption by the small intestine. Antioxidants are compounds that reduce oxidation, a chemical reaction that may produce free radicals and damage cells. The amino acids, vitamins, and minerals work together as antioxidants to stop this chain reaction and protect the cells from free radicals.

Pros

  • Formulation is comprehensive to support immune health
  • Bottle contains 120 capsules
  • Ingredients are safe for all dogs weighing 20 pounds or more

Cons

  • Safety for use with pregnant or breeding animals is unproven
  • This product contains quercetin. Do not use with other blood-thinning medications.
♛ Premium Pick
Premium Pick for Best Dog Antioxidant: NutraZeta Premium Antioxidant Supplement for Dogs

Natural Anti Inflammatory Joint Supplement and Premium Antioxidants for Dogs is the best antioxidant for dogs because it is safe for all dog breeds and sizes, comes in a chicken-flavored soft chew formula, and can help reduce inflammation in the joints.

The Natural Anti Inflammatory Joint Supplement and Premium Antioxidants for Dogs is helpful for dogs with inflammation in the joints caused by hip dysplasia and arthritis. This supplement is safe for young or old dogs, and you can give this supplement with glucosamine for dogs or as a substitute for it. For dogs that do not have a chronic disease condition, it helps boost their immune system by providing five types of antioxidants. This formula supports long-term health and has some anti-aging properties.

Most dogs like these chews because they are chicken flavored. The product includes 90 soft chews in a 12.7-ounce jar. The all-natural ingredients include a proprietary blend of berries that are acai, acerola, amla, cranberry, goji, jabuticaba, mangosteen, maqui berry, pomegranate, schisandra, and strawberry. Other ingredients include oat flour, palm oil, rice bran, rice four, flaxseed meal, natural chicken flavoring, sunflower lecithin, coconut glycerin, sorbic acid, and powdered cellulose that is used for the coating only. This product does NOT contain soy, corn, wheat, sugar, salt, gumming agents, or artificial ingredients. The manufacturing process does not use heat in order to provide the most viability of the active ingredients.

Pros

  • Safe for all dog breeds and sizes
  • Taste tests in pet stores show that 90% of dogs like the taste
  • Manufacturer offers a 100% Happy Guarantee with a money-back promise

Cons

  • A very small number (<10%) of ultra-picky eaters may not like the taste
$ Best Value
Budget Choice for Best Dog Antioxidant: Vetoquinol Select Antioxidant for Dogs and Cats

Vetoquinol Select Antioxidant for Dogs and Cats is the best antioxidant for dogs because it contains natural ingredients, comes in different package sizing options, and contains 74 antioxidants to benefit the overall health of your pet.

The Vetoquinol Select Antioxidant for Dogs and Cats is available in a bottle of 60 tablets or in multiples for a discounted price in packs of two, three, and four. With all-natural ingredients, the manufacture claims that it contains a whopping 74 antioxidants. If this is true, it is too long of a list to repeat here. It also contains vitamins and minerals such as vitamins A, B1, B2, B12, C, E, K3, calcium, copper, iron, magnesium, potassium, and zinc. It has unidentified natural and artificial flavors.

This formula is ideal for small dogs, weaned puppies, and cats. However, it is not for nursing puppies or kittens. For small dogs under 20 pounds, give one tablet in the morning and one in the evening. For pets larger than 20 pounds, give two tablets in the morning and two tablets in the evening.

Pros

  • Helps boost natural immunity in cats and dogs
  • Most pets like the taste of these supplements
  • Made to give the correct dosage to pets under 20 pounds

Cons

  • All 74 antioxidants are not listed on the package
♥ Top Pick
Runner Up for Best Dog Antioxidant: Nutrition Strength Immune Support for Dogs Plus Antioxidant

Nutrition Strength Immune Support for Dogs Plus Antioxidant is the best antioxidant for dogs because it is safe for dogs to take with other supplements, comes with a 365-day guarantee from the manufacturer, and does not contain any artificial preservatives, flavors, or colors.

The Nutrition Strength Immune Support for Dogs Plus Antioxidant has a unique mushroom blend, containing maitake, reishi, shiitake, and turkey tail mushrooms. Packaged in a bottle containing 120 tablets, this formula helps boost the immune system, reduce inflammation, stimulate cell activity, and fight off free radicals. The bioactive compounds in the mushrooms are lectins, phenolic compounds, polysaccharides, proteoglycans, steroids, and terpenoids, which have many therapeutic effects. It does not contain soy, corn, grain, or artificial preservatives, flavors, or colors.

Pros

  • Safe to use with other dog vitamins
  • Manufacturing facility is FDA-registered, NSF certified, and cGMP
  • Manufacturer offers a 365-day guarantee with a full refund if you are not happy

Cons

  • A small percentage of dogs may be allergic to this product
♥ Top Pick
Honorable Mention for Best Dog Antioxidant: Vet Classics Canine Antioxidant Formula with Coenzyme Q-10

Vet Classics Canine Antioxidant Formula with Coenzyme Q-10 is the best antioxidant for dogs because it is a good value, supports overall health in pets, and can help pets with a variety of health conditions.

The Vet Classics Canine Antioxidant Formula with Coenzyme Q-10 comes in an 8.4-ounce bottle containing 120 chewable tablets. This antioxidant helps reduce free radicals to support general wellness for healthy pets and gives an immune boost to older pets and those with a disease. It offers support for pets with chronic illnesses, respiratory problems, and skin or ear conditions. This supplement can be given with glucosamine and other medications, but always check with your vet first to confirm other medications will be safe if combining them.

Pros

  • Suitable for all dogs and cats that are at least 12 weeks old or older
  • Good value for the amount of tablets and the price

Cons

  • As with all chewable tablets, some pets do not like the taste

Features to Consider for the Best Dog Antioxidant

While these antioxidants for dogs reviews are all good choices, the following features should be considered when choosing the right product for your dog’s individual needs.

Formula

Read the ingredients carefully and take the time to research each one. Do not be intimidated by long, potentially scary, chemical names, and do not be fooled by simple, recognizable words either.

I do not appreciate it when a manufacturer hides the ingredients by using a category description like, “contains natural and artificial flavors.” Perhaps one of the undisclosed ingredients may be harmful or your dog is potentially allergic to it. If a manufacturer does not publish the full ingredients list, feel free to reach out and ask them directly. This is also why I never use anything that contains byproducts, which is a catchall phrase.

Taste

Liking the taste is not up to you to decide; it is ultimately your dog’s choice. The best antioxidants for dogs is useless if the dog will not eat it. The only way to know is by buying different products for your dog to try. You may be able to mix the product with something your dog already likes to eat in order to improve the flavor.

Quality

For safety purposes and higher quality, I prefer FDA-approved labs that are making products in the USA. They may use imported ingredients; however, they are more careful with quality control than factories in some other countries.

Benefits of Using Dog Antioxidants

Supplements containing antioxidants are good for all animals to help promote cellular health. By giving your dogs the best antioxidants—along with other nutrients—interrupts the oxidation process. In the body, oxidation causes free radicals to form. Free radicals attack cell membranes and cause damage.

For younger dogs that are not sick, giving the best antioxidants for dogs will help them live longer and be healthier. If the breed of your dog is susceptible to heart problems, then the best antioxidant for dogs or dog heart supplements is great to give them as a preventative measure to reduce the chance of heart disease.

For older dogs and dogs that are sick, the best antioxidant for dogs is a good option if the dog already has a chronic illness, especially any form of heart disease. There can be a synergistic effect of giving the best antioxidant for dogs with other nutrients, vitamins, and minerals, including dog taurine supplements, iron supplements for dogs, or potassium supplements for dogs. However, it is important to always consult with your veterinarian first before planning to combine any dog supplements.

Precautions of Using Dog Antioxidants

Occasionally, dogs will have an allergic reaction to the ingredients in any supplement. Dogs may have a sensitive GI tract, so any change in their diet, even a healthy one, may cause them to vomit or have intestinal problems until their system accepts the change. This is normal and should go away within a few days. If your dog has a severe reaction, such as labored breathing or a fever, this may be a sign of an allergic reaction. If you have any concerns at all, discontinue the use of the supplement and take your pet to the veterinarian.

Most of these supplements contain helpful ingredients for healthy dogs. All the ingredients are safe for most pets. Besides allergic reactions, there is rarely a bad side effect from taking health supplements.

For dogs that are ill, these supplements provide support for the immune system functions. There are no research tests on some of these supplements to prove that they are safe to use on nursing puppies, kittens or their mothers. It is best not to give a supplement to any puppies, kittens, or their mothers until the babies stop nursing.

Conclusion

For the best antioxidants for dogs review, my top pick is the VETRISCIENCE Laboratories Immune Health Supplement for Dogs with Antioxidant Support. I like the comprehensive formulation and my budget can handle the price. I use it for my older dogs to give them the nutritional support that they need so that they live a longer and healthier life. This supplement has noticeably improved my dog’s health, as he is very happy and very gentle now. Feed your dogs well and give them supplements that make sense.