Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Do I Need to Give My Cat Supplements? Vet-Verified Pros, Cons & FAQ

Share

Woman at home holding her lovely Devon Rex cat on lap and gives it a pill

Cats are family members, and we want to ensure they’re happy and healthy and get all the nutrients they need to thrive. Cats require protein-heavy diets, much like their wild cousins. Since they’re obligate carnivores, felines absorb nutrients from animal protein. They also have specific dietary requirements regarding protein, fat, minerals, and vitamins.

Cats that don’t receive the required nutrients often have dry, dull, slowly growing fur. Whether you need to supplement your cat’s diet depends on several factors, including whether you feed your pet homemade or commercial food, the age of your cat, and your pet’s specific health needs. If your buddy is healthy and you’re feeding them high-quality commercial cat food, supplementing your cat’s diet is usually not necessary.1 Cats eating homemade food often need nutritional supplements to get all the necessary vitamins, minerals, and amino acids.

divider 2 cats

Which Cats Benefit From Supplementation?

Veterinarians often recommend supplementation with glucosamine and chondroitin to manage feline arthritis.2 Weight management and senior commercial formulations often include these two joint-soothing compounds, so you don’t have to bother with supplements unless your cat won’t tolerate a food change. If you prefer to provide your cat with a supplement, use chewable treats or powders you can mix into your pet’s food to avoid convincing your furry friend to swallow a pill.

While making your cat’s food from scratch ensures you can control what goes into your buddy’s body, it can sometimes result in feline nutritional deficiencies due to the difficulty of creating recipes that include all the vitamins, amino acids, and minerals cats must have to remain healthy.

Finding the right mix to meet all your pet’s dietary needs can be complex and time-consuming. Most veterinarians suggest working with a feline nutritional consultant who can provide tested recipes for homemade options that include all the nutrients your cat requires. Supplementation is almost always part of these plans.

If your cat has a condition that can be controlled or managed with supplements, rest assured that a veterinarian will let you know what is best for them.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

Preventative wellness PGV mention keep cat healthy Preventative wellness PGV mention keep cat healthy mobile

What Kinds of Supplements Should I Give My Cat?

Cat supplements are designed by veterinarians specifically for feline consumption. Human vitamins are never appropriate for cats. They are often too strong for pets and put them at risk of vitamin toxicity.3 Most human multivitamins contain vitamin D, which is poisonous to cats when consumed in sufficient quantities.

Vitamins specifically made for feline consumption usually come in small, cat-sized doses and often only contain one or two vitamins or minerals to facilitate accurate dosing. Supplements may seem harmless, since they don’t require a prescription to obtain, but that doesn’t mean these products can’t cause problems, particularly when combined with other medications.

Always consult with your cat’s veterinarian before giving your pet nutritional supplements. Let the veterinarian examine your pet before heading to the pet store to stock up on supplements. If you choose to make your cat’s food at home, a feline nutritionist can identify any deficiencies or imbalances in your pet’s diet and suggest appropriate ways to correct any problems.

Certain cats will benefit from calming supplements or ones that help boost their immune system. Supplements can improve your cat’s health and quality of life, but they should only be recommended by a vet, not by your neighbor. Beyond knowing what will actually benefit your pet, a vet can recommend a trusted brand with high-quality products. Supplements are not regulated the same way that medicines are, so you can find varying degrees of quality in the market, with some being better than others. Giving your cat only what your vet recommends will prevent health issues and money-wasting.

Can Giving Cats Feline Supplements Be Harmful?

Yes, supplements can be counterproductive and even dangerous to your cat if they’re already eating high-quality cat food that meets their nutritional needs. Cats that eat commercial food with nutrients they don’t need or that consume too many supplements in addition to their regular commercial diets often suffer physical problems related to nutrition. These cats demonstrate the same signs as pets that aren’t getting the proper nutrients, such as dull coats and dry skin. This happens because many micronutrients influence each other, and the excess of one can prevent the absorption of another.

Giving your cat a multivitamin can also be problematic if you’re feeding them homemade food. Without knowing the precise nutritional profile of what your cat requires, you risk hurting your pet by giving them more nutrients than is healthy for them. Speak with a feline nutritionist to get help developing a complete and balanced homemade diet for your pet.

How Do I Identify a High-Quality Commercial Cat Food?

Look for products featuring an American Association of Feed Control Officials (AAFCO) statement of nutritional adequacy. The AAFCO sets the guidelines for feline nutrition that state agencies use to regulate pet food. Cats require diets consisting of at least 26% protein and 9% fat. They also require trace amounts of minerals such as zinc, manganese, and selenium. Foods with an AAFCO statement of adequacy meet baseline feline nutritional requirements for protein, fat, vitamins, minerals, and amino acids, such as taurine.

It’s best to select a brand composed primarily of meat proteins. Ingredients are listed in order of volume on ingredient list labels. Brands with a nourishing protein first on the ingredient list are great choices. Look for blends featuring whole meats, such as duck, chicken, beef, salmon, or tuna.

Certain breeds, such as Savannahs, have higher protein needs than most cats. They do best on low-carb, high-protein diets. With these sorts of hybrid cats, it’s important to follow all feeding instructions provided by your breeder and veterinarian.

If your cat has a sensitive stomach, look for a single-protein recipe. Also, cats that could benefit from a bit of additional hydration often do well with a predominantly moisture-rich food diet.

Use the feeding instructions provided by the pet food manufacturer as a guide to ensure your cat gets an appropriate amount to eat, but beware of overfeeding! Ensuring your cat maintains a reasonable weight is fundamental to supporting their health, since obese cats are at heightened risk of developing conditions like osteoarthritis and bladder stones.

divider 2 cats

Conclusion

Healthy cats that eat high-quality commercial cat food seldom benefit from nutritional supplementation, and getting too many vitamins and minerals can be just as problematic as not getting enough! Conversely, pets with specific conditions, such as osteoarthritis, often benefit from extra chondroitin and glucosamine, and kitties eating homemade diets almost always require supplementation.

If your pet’s fur starts to become dry or begins to change color, make an appointment to have them seen by the veterinarian, as these signs often indicate the presence of a nutritional deficiency.

If you think that your cat has a condition that could be improved with supplementation, please ensure that you talk to your vet, as they can give you the best advice regarding your pet’s supplementation.

You Might Also Be Interested In:


Featured Image Credit: Veera, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Ask Dr. Paola – Help! My Male Cat Gets Into Fights! (March 9, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Why Your Cat’s Poop Smells Like a Biohazard

Nobody enjoys litter box duty, but sometimes it gets unbearable. The smell hits you from across the room. You’re scooping faster, lighting candles,...

RIP Your Furniture? Not With This Guide to Cat Scratch Damage Control

Your couch looks like it survived a minor apocalypse. The curtains have mysterious vertical shreds. That new rug you splurged on is already...

Celebrating 15 Years as the Most Popular Resident of No. 10 Downing Street

For almost 300 years, a rather unassuming Georgian building of black bricks with a shiny black door has been the official residence and...

More related

Does Vinegar Keep Cats Away? Vet-Reviewed Facts & FAQ

Cats are wonderful creatures and one of the most popular pets in the world. Unfortunately, they can be rather destructive, causing damage to...

10 Cat Breeds That Get Along Well With Dogs (Vet-Reviewed Info With Pictures)

Canines and felines are often perceived as incompatible pets that fight at every given opportunity, but modern pet owners know that some dogs...

8 DIY Free Automatic Cat Feeders You Can Build Today (With Pictures)

Are you considering getting an automatic cat feeder but can’t decide if it’ll be the solution you and your cat need? Automatic cat...

How to Find a Reputable Cat Breeder: 13 Vet-Reviewed Questions To Ask

Excited Cats advocates for adopting before shopping, though we fully understand there are many reasons for seeking a breeder. So, we encourage it...

Keep reading

Special Kitty Cat Food Review of 2026: Recalls, Pros & Cons

Special Kitty Cat Food Review Summary Walmart is known for many things. It sells affordable products that allow regular people to make ends meet, but it’s not exactly known for having the highest-quality offerings. That also sums up its store-brand...

Solid Gold Cat Food Review

Can Cats Eat Hard-Boiled Eggs? Vet-Verified Nutrition Facts & FAQ

It’s difficult not to treat your furry friend to a little piece of your meal, but there’s always some concern as to whether our cats can indulge in the same foods that we do. That concern is amplified with foods...

Can Cats Eat Hard-Boiled Eggs

IAMS Cat Food Review 2026: Pros, Cons, Recalls, & Verdict

As cat owners, we always strive to give our beloved furry family members the best. Unfortunately for some of us, our budget doesn’t always align with the top-tier food options. However, you don’t want to pick any old food you...

IAMS Cat Food Review

Why Is My Cat Keeping One Eye Closed? 4 Vet-Reviewed Reasons & Tips

While it may be a cute idea to think your cat winks at you, a cat with one eye closed may be a sign that something’s amiss. If your cat has one eye closed most of the time, they may...

Orange cat with one eye

Can Cats Survive On Their Own By Hunting Wildlife? Vet-Approved Explanation

Cats are predators; even those who prefer to spend their time curled up in comfortable beds have the bodies and instincts of skilled hunters. The only real difference between feral cats and well-loved pets is their level of socialization. Cats,...

semi feral cat sitting on the ground looking up

Can Cats Eat Cheese? Vet-Approved Facts & FAQ

Cheese is a food long associated with being a feline favorite, and while cheese isn’t toxic to cats, various ingredients within it, primarily the dairy content, are not good or healthy for cats and may instigate problems. A small piece,...

Can Cats Eat Cheese

Cat Shock Collars: How They Work, Safety Advice & Alternatives (Vet-Reviewed)

Several products are available to train pets, but the shock collar is one of the most controversial. It’s a device more commonly associated with training dogs and is used to train an animal to stop a specific behavior. Some swear...

cat with collar_Pixabay

Nutrisca Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary Your cat food choice is one of the most important decisions you will need to make concerning your pet, but with so many choices available, it can be difficult to know which brands are healthy and tasty. Nutrisca...

Nutrisca Cat Food Review

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.