Best Cat Supplements: Top 5 Picks for Feline Health

Does your beloved cat seem a little sluggish lately, or perhaps you worry about their coat health? We all want our feline friends to live their happiest, healthiest lives. But when you walk down the pet store aisle, the sheer number of cat supplements can feel overwhelming. Should you focus on joint support, digestive aids, or maybe something for a shinier coat? It’s easy to feel confused about what your cat truly needs and which products actually work.

Navigating the world of vitamins and supplements for cats presents a real challenge. You want to give your pet the best, but you don’t want to waste money on ineffective formulas or give them something that might cause problems. This detailed guide cuts through the noise. We break down the most important supplements, explain exactly what they do, and show you how to choose the safest, most beneficial options for your unique cat.

Keep reading to gain the confidence to select the perfect nutritional boosters. By the end of this post, you will know exactly which ingredients to look for to support your cat’s vitality from the inside out.

Top Cat Supplements Recommendations

Bestseller No. 1

Zesty Paws Wild Alaskan Omega-3 Blend Pollock + Salmon Oil for Dogs and Cats- Skin and Coat Support, Omega 3 Supplement for Pets, 8.5oz

SKIN & COAT NOURISHMENT: Fish oil for dogs and cat like Wild Alaskan Salmon Oil provides omega-3 fatty acids, helping maintain a shiny coat and nourished skin
OMEGA 3 HEALTH SUPPORT: Our omega 3 fish oil for dogs and cats is packed with EPA and DHA, supporting overall pet health, supporting the immune system, joints, and heart function
EASY-TO-MIX FORMULA: Avoid capsules with this easy salmon oil for cats and dogs; simply add a few pumps to food for a nutritious boost
NOURISHES SKIN: This cat and dog oil for skin and coat is gentle, making it a key part of cat and dog health supplies
BOOST IMMUNE SYSTEM: Rich in omega 3, this cat and dog salmon oil not only supports skin and coat health but also strengthens immune function and overall well-being, fitting dog health needs

Bestseller No. 2

Vital Essentials Minnows Cat Treats, 0.5 oz | Freeze-Dried Raw | Single Ingredient | Grain Free, Gluten Free, Filler Free

FREEZE-DRIED RAW MINNOWS CAT TREAT: Vital Essentials Freeze Dried Cat Treats pack more protein than industry standard into every bite to deliver the peak vitality your dog deserves. Our natural freeze-dried raw cat treats are made from responsibly sourced premium minnows.
BETTER PROTEIN = BETTER BENEFITS: The best freeze dried cat treats on the market use premium butcher cut raw protein to unlock the benefits of naturally occurring vitamins and minerals in raw muscle and organs, because pets deserve the energetic playtimes, healthy skin, shiny coats, strong teeth, and essential gut health that a high-protein diet delivers.
PROUDLY AMERICAN CRAFTED: All our cat treats and food are responsibly sourced and humanely harvested to ensure the quality of our proteins. We go above industry standards to preserve flavor and ensure the highest quality of protein and nutrients in every Vital Essentials product.
MADE WITHOUT: Cat treat additives, fillers, dyes, flavorings, artificial preservatives, grains, or rendered by-products. Vital Essentials also offers the widest variety of single-protein raw cat food and treats on the market—great for picky eaters and cats with allergies!
RAW CAT TREATS FREEZE DRIED FOR PEAK FRESHNESS: Our protein is frozen within 45-minutes of harvesting to lock in peak nutrients, flavor, and freshness. A slow-freeze-dry ensures minimal processing, while preserving the vital nutrients that our pets deserve, the way nature intended.

Bestseller No. 3

MULTIBITES 24-in-1 Cat Vitamins and Supplements Chews, Vitamins Treats with Lysine & Taurine for Cat - Immune, Skin&Coat, Respiratory&Vision Support, Daily Multivitamin for Indoor&Senior Cats-330Bites

24-in-1 Cat Supplements: Multibites cat multivitamins are specially formulated for felines to fill nutritional gaps and promote overall body health. They contain essential nutrients for cats, including Vitamin E and B-Complex and Omega-3. These cat supplements treats not only boost overall vitality, immune function, respiratory health and maintain vision, but also lay a solid foundation for your cat's comprehensive well-being, making them an ideal daily source of taurine supplementation for cats
Supports Immune Balance & Respiratory Comfort: Our cat health supplements with L-Lysine. Each bites contains 40mg of L-lysine. These cat lysine treats maintain the comfort of your cat's upper respiratory tract and promotes immune balance, providing strong protection for your cat's overall health, especially suitable for cats prone to respiratory issues and senior cats
Enhances Heart Health & Sharp Vision: Formulated with taurine for cats, an essential nutrient for felines. Taurine supplement plays a crucial role in supporting normal heart function, maintaining sharp vision, and ensuring overall cellular health. It is indispensable for the growth and development of cats, helping them maintain a lively and healthy state
Nourishes Skin & Shiny Coat: Our cat vitamins are enriched with Omega-3 and Omega-6. Omega-3 provides natural antioxidants to soothe the body's functions, while the combination of Omega-3 and Omega-6 deeply nourishes the skin, reduces dryness and itching, and enhances the vitality of the coat, making your cat's fur soft, smooth and shiny
Cat Immune Support Supplement: Our cat immune supplement are specially formulated with added astragalus, enhances the cat's immune system and improves the body's stress resistance. It helps cats better adapt to environmental changes, reduce the impact of stress factors, and strengthen their ability to fight against external pathogens. An essential immune booster for every cat-owning household, featuring a herbal extract formula that's more safe and reliable

SaleBestseller No. 4

Life Extension Cat Mix, cat Food Supplements, Heart Health, probiotics, L-arginine, Taurine, B12, folic Acid, Vitamin C, Vitamin E, Rosemary, Nutrient Absorption, Gluten-Free, Non-GMO, 85 Servings

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.

Bestseller No. 5

Cat Vitamin Treats with L-Lysine & Taurine – 12 Essential Vitamins & 5 Minerals, Cat Multivitamin Supplement for Immune, Joint & Skin Support, Daily Health Formula for Indoor & Senior Cats – 450 Chews

【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

Bestseller No. 6

Nutramax Cosequin for Cats Joint Health Supplement, Contains Glucosamine for Cats, Plus Chondroitin and Omega-3s, Supports Joint and Skin and Coat Health, Soft Chews, 60 Count

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.

Bestseller No. 7

L-Lysine Chews for Cats 500 Chews, Immune & Respiratory Support Crunchy Shell with Krill Core, with Colostrum & Omega-3s for Sneezing and Runny Nose, Chicken Flavor, for All Ages & Breeds Cats

Immune & Respiratory Support · Krill Core + Chicken Flavor: Formulated for all breeds and ages, these cat L-Lysine chews provide comprehensive immune and respiratory care. Enriched with L-Lysine HCI + colostrum + beta-glucan + quercetin + Omega-3s, the formula helps support respiratory function, eye and nose health, and overall immunity. Each WEALLIN lysine chews for cats features a crispy shell with a krill-infused core and savory chicken flavor — easy to digest and loved by picky eaters.
Daily Wellness · Treat-Like Experience: WEALLIN’s small, crispy L-Lysine chews for cats are designed to be given in multiple pieces per day (about 1 chew per 1 lb of body weight). This small-piece format makes care more precise and gentler for cats, while also working perfectly as training rewards or bonding treats, making daily immune and respiratory support a natural, enjoyable part of your cat’s routine.
Immune Support & Respiratory Defense: Packed with L-Lysine and colostrum, these cat lysine chews help enhance immunity and ease sneezing, runny nose, and watery eyes. Beta-Glucan supports natural defenses, while quercetin and Omega-3s provide respiratory support and skin and coat care. Consistent daily use helps cats stay active, comfortable, and thriving.
Overall Health · Skin & Coat Vitality: Lysine is an essential amino acid that plays a vital role in cats’ overall well-being, yet their bodies cannot synthesize it naturally. Daily support helps maintain immune and respiratory health in kittens and cats, supporting their overall well-being. With fish oil rich in Omega-3, WEALLIN L-Lysine chews go beyond respiratory care to promote healthy skin and a glossy coat, and maintain visible wellness from the inside out.
500 Chews · Long-Term & Multi-Cat Friendly: Each jar contains 500 crunchy, krill-core chews for cats— ideal for long-term daily support or multi-cat households. Gentle, tasty, and reliable, WEALLIN L-Lysine Chews for Cats turn essential immune and respiratory care into a sustainable, treat-like experience cats love and pet parents trust.

SaleBestseller No. 8

Salmon Oil for Dogs & Cats - Healthy Skin & Coat, Fish Oil, Omega 3 EPA DHA, Liquid Food Supplement for Pets, All Natural, Supports Joint & Bone Health, Natural Allergy & Inflammation Defense, 8 oz

SOFT, SHINY, & SMOOTH COAT - Does your dog, cat, ferret, horse, or energetic ball of fur have a dull, dry or coarse coat? Essential omega 3 fatty acids from our salmon oil supplement will help support healthy skin and coats. You’ll want to hug them even more!
DRY SKIN, ITCHING, FLAKING, SHEDDING, & ALLERGIES? - Is your pet constantly itching or scratching due to dry skin and allergies? The essential fatty acids contained in salmon fish oil help support natural allergy defense. Your pet will be much happier playing rather than itching and scratching.
INFLAMMATION, JOINT PROBLEMS, & ARTHRITIS? - Have you noticed your pet playing less and having trouble with common activities? The omega 3 in salmon fish oil helps support joint and bone health and also supports a healthy immune system. Normal activities will be funner and more comfortable.
SUSTAINABLY SOURCED - Our salmon oil has been sustainably sourced ensuring healthy oceans and safeguarding seafood supplies for the future.
PROUDLY WOMEN-OWNED, FAMILY-OWNED, and US-OWNED - We are proud to be Family-owned, Woman-owned, and US-owned. Our products and ingredients are sourced globally so we can give our fur babies the best.

The Ultimate Buying Guide: Choosing the Best Cat Supplements

Cats are amazing companions. Keeping them healthy helps them live longer, happier lives. Sometimes, regular cat food isn’t enough. That’s where cat supplements come in. This guide helps you pick the right ones for your feline friend.

Key Features to Look For in Cat Supplements

When shopping, look closely at the label. Certain features show a good quality product.

1. Ingredient Transparency

Clear Labeling: You must see exactly what is inside. If the label is vague, put it back.
Source Information: Know where the ingredients come from. Good companies share this information.

2. Form and Palatability

Ease of Use: Supplements come as soft chews, powders, or liquids. Choose a form your cat will actually eat.
Taste Test: If your cat refuses to eat it, the best supplement is useless. Many brands offer tasty, fish-flavored options.

3. Third-Party Testing

This is very important. Third-party testing means an independent lab checks the supplement for purity and accurate dosing. This adds a layer of trust.

Important Materials: What Goes Inside Matters

The ingredients determine how well the supplement works. Focus on these key materials:

Essential Nutrients

Omega-3 Fatty Acids (Fish Oil): These support shiny coats, healthy skin, and joint health. Look for EPA and DHA.
Glucosamine and Chondroitin: These are superstars for older cats or cats with stiff joints. They help build cartilage.
Probiotics: These good bacteria support a healthy gut. A happy tummy means better digestion and a stronger immune system.
Taurine: Cats need this amino acid for heart and eye health. While most quality foods have it, supplements can boost levels if needed.

Factors That Improve or Reduce Quality

Not all supplements are created equal. Some things boost quality, and others hurt it.

Quality Boosters

Bioavailability: This means how easily your cat’s body can absorb the nutrient. Look for chelated minerals or specific forms of vitamins that absorb well.
Natural Ingredients: Supplements made with whole, natural sources are often better than synthetic ones.

Quality Reducers (Ingredients to Avoid)

Artificial Fillers: Things like artificial colors or unnecessary corn/wheat fillers reduce the value.
Excessive Preservatives: Too many chemicals can upset your cat’s stomach.

User Experience and Use Cases

Think about why you need the supplement. This guides your purchase.

When to Use Specific Supplements

For Kittens: They might need a general multivitamin or calcium boost for fast growth.
For Senior Cats: Joint support (glucosamine) and Omega-3s are often necessary to keep them mobile.
For Skin Issues: High-quality Omega-3s help reduce dryness and scratching.
For Picky Eaters: Liquid drops mixed into wet food work best for cats who reject pills.

Always talk to your veterinarian before starting any new supplement. They can confirm if your cat truly needs it and suggest the right dosage. A good supplement should make your cat feel better without causing stomach upset.

10 Frequently Asked Questions (FAQ) About Cat Supplements

Q: Do all cats need supplements?

A: No. Most healthy cats eating a complete and balanced commercial diet do not need extra supplements. Supplements are usually for specific needs, like old age or certain health conditions.

Q: How long until I see results from a supplement?

A: It varies. For skin and coat supplements (like fish oil), you might see shine in 3–4 weeks. For joint supplements, it can take 6–8 weeks to notice better movement.

Q: Can I give my cat human supplements?

A: Absolutely not. Many human vitamins are toxic to cats, especially high doses of Vitamin A or Iron. Only use products made specifically for cats.

Q: What is the difference between a vitamin and a supplement?

A: Vitamins are specific organic compounds needed for body functions. A supplement is a broader category; it can contain vitamins, minerals, herbs, or fatty acids to fill nutritional gaps.

Q: Are liquid or chewable supplements better?

A: It depends on your cat. Liquids are easy to hide in food. Soft chews are great if your cat likes treats, but powders can be messy.

Q: What happens if I give my cat too much of a supplement?

A: Overdosing can cause problems. Too much Vitamin A can cause bone pain. Too much calcium can cause mineral imbalances. Always follow the dosage instructions.

Q: Should I switch brands often?

A: No. Consistency is key for supplements. If a product works well, stick with it. Switching too often prevents your cat from getting the full benefit.

Q: How should I store cat supplements?

A: Check the label. Most need to be kept in a cool, dry place. Omega-3 oils often require refrigeration after opening to prevent them from going rancid.

Q: Are probiotics necessary for every cat?

A: Not always. They are very helpful if your cat has frequent loose stools, is recovering from antibiotics, or is very stressed (like during boarding).

Q: Can supplements treat serious diseases?

A: No. Supplements support health and manage symptoms, but they do not cure serious diseases like kidney failure or diabetes. Always rely on your veterinarian for medical treatment.