This article is for you if you’re looking for a way to support your cat’s health from the inside out. Like us, cats need antioxidants to help combat the effects of aging and stress, and support a healthy immune system. These supplements can be especially beneficial for cats who need help with arthritis, or who have compromised immune systems.
Keep in mind that cat supplements can be difficult to find, especially if you’re looking for a specific health benefit, like helping your cat with their cat hairball remedies. We’ve done the research to find the best cat antioxidant supplements that are highly-rated by users and cat owners alike.
Keep reading to learn more about our best cat antioxidant supplements.
Our Editor’s Best Cat Antioxidant Supplements Reviews
- Comprehensive Senior Support: These senior multivitamin chews are packed with over 27 essential nutrients, including vitamins, minerals, fatty acids, and antioxidants, to promote overall health and well-being in senior cats
- Perfect for Senior Cats: Designed for senior cats of all breeds and sizes, this multivitamin supports healthy aging by promoting energy, mood, and cellular health. It’s an ideal choice for older cats on homemade or raw diets to ensure they’re getting balanced nutrition
- Formulated by Vets: A senior-specific multivitamin designed to help fill nutritional gaps and provide daily support for heart, brain, immune, and joint health
- Science-Backed Ingredients: This senior cat multivitamin includes key ingredients like taurine, vitamins A, C, and E for antioxidant protection, biotin and methionine for skin and coat, and Omega-3 and -6 fatty acids from fish oil to support joints and brain function
- Easy and Delicious: These soft chews are fish-flavored to be irresistible to cats and a great alternative to liquid or powder supplements. Cats love the taste, making them easy to add to your daily routine
- THEY’LL BE GOOD TO GO: With our urinary tract health supplements for cats go time is going to be a great time. These cat treats support the urinary tract system & promote urinary tract health, while helping to maintain normal pH for cats & strengthen their immune system. Our cat immune support & cat digestive support help your pet feel their best by supporting normal bladder function, plus, they’re designed specially for cats by cat lovers, so you know it will be love at first bite.
- FROM THE INSIDE OUT: Pet Honesty’s Cat Urinary Health are crunchy, creamy supplements that support urinary health with cranberry for bladder which is a natural antioxidant that helps counter bad bacteria in the urinary tract, glucosamine for cats to support urinary tract function, as well as prebiotics, probiotics & fiber to support gut health. This is supplement support that’ll help put an extra pounce in your pet’s step & help them feel their best.
- PURPOSE-BUILT FOR PETS: With Pet Honesty’s Cat Urinary Health your little one will experience real results because our crunchy, creamy supplements are built on wholesome, natural ingredients like barley, brown rice, & fish oil that help your cat feel in top form so you can have happier, healthier years together.
- DROOL-WORTHY TASTE: Not only do our kidney and bladder support chews promote urinary tract health, they’re a crunchy, creamy supplement that tastes great too! In fact 9 out of 10 cats love the taste. So, in addition to giving your cat something that's good for them, you'll also be giving them something they’ll enjoy.
- THE HONEST DIFFERENCE: Our products are made with clean, science-backed ingredients for results you can trust, & with no fillers, artificial preservatives, colors, or flavors, you'll have no doubt your dog is getting the best. Proudly supporting pets in need nationwide & using recycled plastic in our packaging, there's also no doubt that we're committed to doing our best. -- All products are made in the U.S.A. | NASC Member Company
- 【Complete 12 Vitamins + 5 Minerals】Designed specifically for felines to fill nutritional gaps. Supports multiple bodily systems—helping maintain metabolism, boost energy, and promote whole-body wellness. Perfect for indoor cats, picky eaters, and growing kittens
- 【Enhanced Immune Defense Boost】A powerful immune blend featuring L-Lysine for cats, Beta-Glucan, and taurine supplement for cats. Helps reduce sneezing, eye discharge, and respiratory irritation while boosting viral defense to keep your cat strong and resilient at every age
- 【5-in-1 wellness system Support】Inside each chew, a powerful blend of L-Lysine, Taurine, Omega-3s, Collagen, Probiotics, Digestive Enzymes, Glucosamine, and Cranberry works together to boost immunity, enhance skin & coat, improve digestion, support joint mobility, and maintain urinary health—all in one daily bite
- 【Preventive Support for Every Stage】Designed for kitten treats, adult indoor cats, picky eaters, and cats senior. Daily use helps prevent early decline—dull coat, low immunity, digestive imbalance, stiffness, or urinary discomfort—before symptoms begin. A smarter choice than ordinary cat treats healthy
- 【Buy with Confidence】 We stand behind our products. If you or your pet aren’t fully satisfied with the results, we’ve got you covered. 👉️Any product issues, please contact us via Amazon Message Center. Enjoy a FULL-REFUND, NO QUESTIONS ASKED! For first-time use, start with half of the recommended dosage and observe your pet's reaction
- Number 1 veterinarian-recommended cat probiotic brand to support digestive health (Kantar Veterinary Tracker, 2021), making it an excellent cat supplement
- Purina Pro Plan Sensitive stomach cat food supplement for the dietary management of kittens and adult cats with cat diarrhea
- Digestive Care Cat Food supplement containing probiotics proven to promote intestinal health and balance
- FortiFlora cat vitamins and supplements have antioxidants to support a robust immune system and contain antioxidants for cats
- Easy-to-feed probiotic powder
- Vet-Developed Formula for Multi-Benefit Support – Nutra Thrive combines high-quality ingredients to support your cat’s mobility, immune system, digestion, and overall well-being.
- Joint & Mobility Support – Chicken collagen helps maintain strong, flexible joints, promoting an active lifestyle for cats of all ages.
- Essential Vitamins & Minerals – Contains over 15 veterinarian-selected vitamins and minerals, including Magnesium, Biotin, and Riboflavin, to support whole-body health.
- Gut & Immune Health – Includes 4 powerful probiotics and digestive enzymes to help support a healthy gut, smooth digestion, and a strong immune response.
- Easy-to-Use Powder with Delicious Flavor – Simply mix with your cat’s food; the tasty chicken flavor makes it easy to give daily.
- Cat multivitamin for overall health – Your cat has unique nutritional needs. Our formula complements your kitty’s balanced meals to help maintain overall health and well-being.
- 10+ essential vitamins – Our formula supports cardiovascular and overall health with vitamin A, B vitamins, and vitamins C and E for antioxidant support, so your cat can live their best life (all nine of them!).
- Probiotics and other nutrients – Cat Mix supports digestive health with cat-friendly probiotic strains. It also promotes eye, kidney and pancreatic health with amino acids arginine and taurine.
- Ingredients matter – We use the finest raw ingredients with the quality and purity you deserve. The majority of our products are non-GMO, gluten-free and manufactured in the USA—and a Certificate of Analysis is available for every one.
- Live your healthiest life – We believe the answers to a healthier life are in reach, and that scientific research is the key to getting there. That’s why so many of our formulas feature specific ingredients and amounts based on scientific studies.
- Nusentia's full spectrum liquid feline multivitamin: Spectrin for Cats : Best Value per Ounce! Includes antioxidants, vitamins, minerals, and key nutrients for vibrant skin, coat, and allergy support. Great for excessive shedding and allergies in cats.
- Easy dosing: Liquid cat vitamins absorb faster and cats love it!
- Up to 96 doses per container
- Made in the USA : Certified GMP : All Natural : Effective : Quality Tested
- Ideal for cats and kittens of all ages and stages.
- Multivitamin for Cats: These cat multivitamin chewable tablets are packed with 27+ essential nutrients, including vitamins, minerals, fatty acids, and antioxidants, to promote overall health and well-being
- Formulated by Vets: Multivitamin for cats designed to help fill nutritional gaps and provide daily support for heart, brain, immune, skin, and joint health
- Perfect for Cats at Any Stage: Designed for cats of all breeds and sizes, this feline multivitamin supports healthy aging by promoting energy, mood, and cellular health. It’s an ideal cat multivitamin supplement for homemade or raw diets to ensure your pet is getting balanced nutrition
- Science-Backed Ingredients: This cat multivitamin includes key ingredients like vitamins A, C, and E for antioxidant protection, biotin and methionine for skin and coat, and Omega-3 and -6 fatty acids from fish oil to support joints and brain function
- Easy and Delicious: These chewable tablets are fish-flavored to entice even the pickiest cats and are a great alternative to liquid or powder multivitamins. Cats love the taste, making them easy to add to your daily routine
- Joint Health Supplement for Cats - Cosequin is the #1 veterinarian recommended retail joint health supplement brand▼.
- Contains Glucosamine for Cats - Cosequin contains glucosamine hydrochloride (FCHG49) and sodium chondroitin sulfate (TRH122). This unique combination of ingredients supports healthy joints.
- Tasty Chews for Daily Use - Cosequin comes in a tasty soft chew, making daily administration easy and convenient.
- With Omega-3s - Each soft chew contains omega-3 fatty acids, which help support your cat’s skin and coat health.
- Exceptional Quality - Cosequin is backed by science, undergoing thorough quality inspections to ensure your cat receives a safe, high-quality product. It is manufactured in the United States with globally sourced ingredients.
Best Cat Antioxidant Supplements Buying Guide
Before choosing the best cat antioxidant supplements you should consider following options:
1. Taurine: This is an essential amino acid that is already present in the body of the cat. Taurine is a powerful antioxidant that can help improve the overall health of your cat. It helps in fighting against heart diseases and also supports eye health.
2. Vitamin E: This is an important antioxidant and an essential vitamin for the cat. Vitamin E helps in improving the immunity and also supports the overall health of the cat. Vitamin E can also help improve the fertility of the cat. It helps in reducing the levels of cholesterol and also supports eye health.
3. Vitamin C: Vitamin C is an essential antioxidant for the cat. It helps in supporting overall health of the cat by improving the immunity. Vitamin C is also important for supporting the bone and teeth health of the cat.
4. Vitamin A: Vitamin A has antioxidant properties and is very essential for the overall health of a cat. It supports the immune system and also supports eye health of the cat.
5. Zinc: Zinc is an essential mineral for the cat and is an important antioxidant. Zinc supports the overall health of the cat and also supports muscle health. It also supports immune system of the cat.
6. Vitamin D: This is an essential vitamin and an important antioxidant for the cat. Vitamin D supports overall health of the cat and also supports bone health. It also helps in improving the immunity of the cat.
7. Fish Oil: Fish oil has many antioxidants properties and is important for the overall health of the cat. Fish oil helps in supporting the immunity of the cat and also helps improve the heart health of the cat. It also helps in improving the brain health of the cat.
8. Vitamin B: Vitamin B has antioxidant properties and is essential for the overall health of the cat. It supports the brain and muscle health of the cat. It also supports the immune system and the heart health of the cat.
9. Vitamin K: Vitamin K has antioxidant properties and is essential for the overall health of the cat. It supports overall health of the cat and also supports bone health. Vitamin K also supports the immune system of the cat.
10. Vitamin E: Vitamin E has antioxidant properties and is essential for the overall health of the cat. It supports immune system and also supports eye health of the cat.
11. Zinc: Zinc is an essential mineral for the cat and has antioxidant properties. Zinc supports overall health of the cat and also supports muscle health. It also supports immune system of the cat.
12. Iron: Iron has antioxidant properties and is essential for the overall health of the cat. It supports overall health of the cat and also supports muscle health. It also supports immune system of the cat.
13. Selenium: Selenium is an essential mineral for the cat and has antioxidant properties. It supports overall health of the cat and also supports muscle health. It also supports immune system of the cat.
14. Manganese: Manganese is an essential mineral for the cat and has antioxidant properties. It supports overall health of the cat and also supports bone health. It also supports immune system of the cat.
15. Zinc: Zinc is an essential mineral for the cat and has antioxidant properties. It supports overall health of the cat and also supports muscle health. It also supports immune system of the cat.
16. Vitamin K: Vitamin K has antioxidant properties and is essential for the overall health of the cat. It supports overall health of the cat and also supports bone health.
What else you should know about cat antioxidant supplements
1. What are the best cat antioxidant supplements?
There are a variety of cat antioxidant supplements available on the market. Some of the best include:
1. Antiox-9: This supplement contains a blend of vitamins A, C, and E, as well as selenium and zinc. It is designed to help support a healthy immune system and protect against free radical damage.
2. Catechin: This supplement contains a powerful antioxidant known as catechin. It is thought to help protect cells and reduce inflammation.
3. Coenzyme Q10: This supplement contains coenzyme Q10, which is a powerful antioxidant that helps to protect cells and improve energy production.
4. N-Acetyl Cysteine: This supplement contains a compound known as N-acetyl cysteine. It is thought to help protect cells and reduce inflammation.
5. Vitamin E: This vitamin is a powerful antioxidant that helps to protect cells and reduce inflammation.
2. What are the benefits of taking antioxidant supplements for cats?
The benefits of taking antioxidant supplements for cats are not fully known, but they may include reducing the risk of certain diseases, improving the health of the skin and coat, and reducing inflammation.
3. Are there any side effects of taking antioxidant supplements for cats?
There are no known side effects of antioxidant supplements for cats.
4. How do I choose the right antioxidant supplement for my cat?
There is no one-size-fits-all answer to this question, as the best antioxidant supplement for your cat will depend on their individual needs. However, some factors to consider when choosing an antioxidant supplement for your cat include their age, health condition, and any medications they are taking. You should also talk to your veterinarian about which antioxidant supplement would be best for your cat.
5. What is the best dosage of antioxidant supplement for my cat?
There is no definitive answer to this question as it will vary depending on the specific needs of your cat. However, it is generally recommended to give your cat between 50 and 100 mg of antioxidant supplement per day.
Conclusion
On the market, there are numerous best cat antioxidant supplements. Hopefully, the list of the top ten best cat antioxidant supplements will save you time researching and deciding on the best one for you.