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

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!

PangoVet_Mention-in-Content for PangoVet2 save money

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

15 Savannah Cat Colors & Patterns (With Info & Pictures)

Savannah cats are incredibly striking in many ways. Besides resembling their wild African Serval cat ancestors in appearance and size, the coat colors...

10 Best Cat Litter Box Furniture & Enclosures of 2025: Reviews & Top Picks

Coping with a stinky litter box is a timeless and universal experience known all too well to cat owners. Life with our cats...

Why Are There So Many Cats in Greece? Interesting Feline Facts

If you’re visiting Greece soon, there’s one thing you’ll likely notice right away: there are cats everywhere. They are one of the country’s...

How Much Does a Munchkin Cat Cost in 2025? Updated Price Guide

With their large, curious, owl-like eyes and little legs, it’s easy to see why Munchkin cats get so much attention. These intelligent, incredibly...

More related

Signs of Aging in Cats: What Is Normal, What Is Disease? (Vet-Reviewed)

The average cat lives for 13 to 17 years, but some can make it well into their 20s. Many of the changes their...

Is It True That All Cats Have Tails? Vet-Reviewed Facts

A tail is a vital part of a cat’s physique and helps them balance, capture prey, and communicate with humans and other felines....

Ultimate Cat House: the Famous Cat Mansion in Japan

Most of us consider our homes cat friendly. We provide scratching posts, cat trees, and lots of toys to keep our feline family...

10 Best Cat Litter Boxes for Odor Control in 2025: Reviews & Top Picks

Cat litter boxes are essential for those who have cats, but not all boxes are created equal. There are many where it’s simply...

Keep reading

Exotic Shorthair Cat Health Problems: 10 Vet-Reviewed Issues

Many pet parents love flat-faced cat breeds, and the Exotic Shorthair cat is one such breed. Their squashed little noses and huge round eyes make them irresistible to some. In fact, as of 2023, Exotic Shorthair cats were the fourth...

Catster_Health Problems of Exotic Shorthair

How Long Will a Cat With Diabetes Live Without Treatment? Vet-Verified Risks & FAQ

Diabetes is a common and serious disease that affects the health of cats. When left untreated, diabetes can cause life-threatening complications such as diabetic ketoacidosis, neurological disease, and other health problems. Fortunately, most cases of diabetes in cats can be...

owner calming his cat

Do Cats Get Lonely When You Go to Work? Vet-Reviewed Signs & Entertainment Tips

Many people have the view that cats are antisocial; however, that isn’t true. Cats are very affectionate creatures; they socialize in ways different from ours, and there are variations in how sociable cats are toward humans. While we show affection...

cat indoor_Melanie Hogue_Pixabay

Can Cats Eat Salad? Vet Reviewed Health Benefits & Warnings

Cats are obligate carnivores, which means they have to eat meat for proper nourishment. But every so often, some cats like to indulge in leafy greens. A cat’s natural prey may contain greens in their digestive system, and eating a...

Can Cats Eat Salad

Why Does My Cat Growl? Meaning, How You Should React & FAQ (Vet-Verified)

Pet cats are usually friendly and interactive with their human companions. But sometimes, they display aggressive behavior, such as growling. You may be wondering why cats growl and what it means when they do it. Is your cat acting territorial,...

angry cat hissing

Why Does My Cat Clean Herself on Me? 4 Vet-Verified Reasons & When to Worry

Cats have quite a few strange behaviors. Even if you have been living with cats forever, you may still be surprised by their behavior every once in a while. For instance, some cats may clean themselves while lying in their...

cat sleeping on owner's lap

Is Coleus Toxic to Cats? Vet Approved Advice

Even if you don’t know it, you probably have seen beautiful coleus plants in people’s homes and gardens. These colorful plants are common staples because of their beauty, but that doesn’t mean they’re completely safe for cats. So, is coleus...

Catster_Is Coleus Toxic to Cats

Are Yucca Plants Toxic to Cats? Vet-Verified Ingestion Signs & Treatment

Yucca, a kind of desert plant, is a popular garden plant that thrives in warm, dry areas. They don’t need a ton of water to grow, and they are distinctive and beautiful, with a big spray of spike-shaped leaves. They...

Catster_Are Yucca Plants Toxic to Cats