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
- 【Daily Cat Multivitamin with Taurine】WEALLIN cat multivitamin chews provide complete daily nutrition with taurine, essential vitamins, minerals, and antioxidants to support heart, vision, digestion, immune system, and skin & coat health. Designed as a practical multivitamin for cats, these daily chews are a convenient choice for pet parents looking for cat vitamins and cat supplements & vitamins in one formula.
- 【Taurine for Cats – Heart & Vision Support】Cats need taurine from their daily diet, and WEALLIN provides 200 mg taurine for cats in every 10 chews. This cat taurine supplement helps maintain normal heart function and healthy vision, making it an easy way to add taurine supplement for cats to your cat’s daily routine as part of complete nutritional support.
- 【Digestive & Immune Support for Cats】Formulated with Beta-Glucan, FOS prebiotics, and Vitamin C to help maintain digestive balance and support normal immune function. These cat multivitamins for cats help maintain gut health and nutrient absorption, making them a practical addition to cat vitamins for cats and daily cat supplements.
- 【Healthy Skin & Coat Nutrients】Zinc, Biotin, and Vitamin E work together to help maintain healthy skin and a soft, shiny coat. These vitamins for cats help support normal skin condition and coat appearance, especially helpful for cats experiencing seasonal shedding or dry skin.
- 【500 Chicken-Flavor Cat Treats Cats Love】Each jar includes 500 tasty chews with a crunchy chicken exterior and savory krill-filled center cats enjoy. These cat treats make daily feeding simple—serve as a treat or mix with meals. A convenient option for picky eaters and multi-cat homes looking for easy cat vitamins and supplements.
- 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
- 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
- KEEP BAD DAYS AT BAY: Itchy. Sneezy. Wheezy. We know cat allergies are no fun—for them or for you. That’s why our I-Lysine supplement for cats helps support a strong immune system, soothe itchy skin, and maintain clear breathing. It’s used to relieve sneezing, runny noses, and watery eyes while helping balance your cat’s gut and digestive health. Give it directly as a crunchy, creamy treat or sprinkle it on their food for easy daily wellness at home or after outdoor adventures.
- THE INSIDE STORY: Formulated with science-backed ingredients like L-Lysine, Quercetin, and Colostrum, this cat allergy relief supplement is capable of strengthening immune and respiratory function from the inside out. Antioxidants defend against seasonal irritants, while omega fatty acids help calm skin and coat discomfort. It’s a vet-approved allergy solution cats love—made to keep your little one healthy through every season.
- SECOND TO NONE: Pet Honesty’s Cat Immune Support Lysine treats are trusted by vets and loved by cats everywhere. Our allergy relief chews are used by cat parents who want real results, real relief, and real transparency. Proudly the #1 vet-approved allergy support brand on Amazon and in Pet Specialty*, we create supplements that deliver visible improvements in your pet’s comfort and well-being.
- DROOL-WORTHY TASTE: 4 out of 5 cats can’t resist the crunchy-creamy texture and savory chicken flavor of our Cat Immune Support Lysine treats. Whether sprinkled on kibble or served as a standalone treat, they make daily immune and respiratory care feel like snack time. Perfect for picky eaters or for use alongside probiotics and daily multivitamins to support complete feline wellness.
- 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 cat 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 manufactured in the U.S.A. | NASC Member Company
- 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.
- ADVANCED & NATURAL FORMULA - Wellix High-potency cat & dog milk thistle with dandelion, astaxanthin, and vitamins E & C supports liver health and provides antioxidant protection. Safe, effective, and free from additives and artificial flavors, making it a trusted milk thistle supplement for dogs and cats
- LIVER CARE - Wellix Milk Thistle Liquid promotes liver detoxification, eliminates toxins, and enhances cellular antioxidant capacity, providing cat liver support as well as serving as one of the trusted liver supplements for dogs. Ideal for daily liver care and for pets with diabetes or obesity
- EASY TO USE - Wellix milk thistle for dog and cat is flavored with chicken, making it irresistible even for picky pets. Simply add the liquid milk thistle directly to food or water for clean, stress-free daily supplementation
- PRECISE SUPPORT - Veterinarian-recommended Wellix milk thistle drops provide professional feeding guidelines. Use the marked dropper for precise nutritional support, delivering reliable liver support for dogs and cats of all sizes and ages
- LARGE CAPACITY - Each 120ml bottle of Wellix liquid milk thistle provides ample supply for daily and long-term liver care. Perfect for multi-pet households, it lasts several months even for large dogs, allowing you to easily support your pets’ liver health continuously and making daily care more reassuring
- DAILY SUPPORT: This veterinarian-formulated paw gel provides essential vitamin and mineral support to boost your cat’s immune health and well-being every day; Perfect for kittens, senior cats, and indoor cats to help them feel their best
- IRRESISTIBLE TASTE: With a delicious flavor and paw-based application, Nutri-Vet makes it easy to support your cat’s health; No need for tricks or pill pockets, simply apply and let your cat enjoy the tasty, calming benefits with ease!
- QUALITY FORMULA: Our cat supplements are a blend of essential vitamins and minerals to support your cat’s nutritional needs; Contains no petroleum jelly, wheat, corn, soy, artificial colors & flavors, ensuring a safe and healthy choice of multi vitamin
- MADE BY VETS: Developed by expert veterinarians, Nutri-Vet cat vitamins and supplements ensure high-quality care; This formula promotes immune support, supports kittens and senior cats, and helps maintain overall feline well-being
- USA MADE: Our vitamins and supplements are made in the USA with premium globally sourced ingredients you can trust; This cat multivitamin supports immune health, kitten and senior care and overall cat health; Our products carry the NASC quality seal
- 【15 in 1 Cat Multivitamin】 Rich natural cat supplement containing 15 important nutrients, such as glucosamine, Vitamin C, Vitamin D (Cholealciferol) and many others. Offers a unique and effective blend of cat supplements & vitamins, including 6 probiotics, glucosamine, promoting your pet's overall wellbeing.
- 【Cat Hip & Joint Support】Our cat vitamins multivitamin provides hip and joint support, helping to reduce inflammation & improve flexibility, enabling your cat to enjoy better mobility and a more active lifestyle.
- 【Cat Skin & Coat Health】The cat multivitamins and minerals are great for increasing mobility and flexibility, protecting cat joints health, providing relief in inflammation, skin & coat issues and better the digestive system of your furry friends!
- 【Cat Urinary Tract Support With Cranberry】Empower your cat with a natural pet infection UTI treatment that ensures urinary tract health. Our liquid cat vitamins drops, enriched with cranberry extract provide relief for pets with urinary infections. The cranberries serve as a deterrent to kidney stones and foster bladder health.
- 【15 in 1 Cat Multivitamin Supplement】 We put 15 cat vitamins together for all-round cat health balance. Liquid formula makes it more easy for small or senior cats. Shake well before use. It can be given directly to your cat orally, mixed with their food, or added to their water.
- 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
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.