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.

Supplements for Cats: Needs, Uses & Complete Guide (Vet Answer)

Share

owner-giving-vitamin-to-cat

Supplements are a hot topic in human health. You can find a formulation to cure seemingly anything that you think may be ailing you. As with most things in human medicine, veterinary medicine isn’t far behind, as we all want to do what is best for our furry friends. So, how do supplements relate to feline health? The fact of the matter is that some cats may need them and others don’t.

If you’re thinking of giving a supplement to your cat, be sure to talk to a veterinarian first to determine if the product is necessary and safe. Never give human supplements to your pet unless advised by a vet.

divider cat faces 2 oct 2024

What Are Supplements for Cats?

Supplements are vitamins, minerals, or other products that can be given to cats to boost their health in some way. They are meant to be given in addition to a healthy diet and potentially alongside other environmental changes. That said, most healthy cats that don’t have any health conditions and that are eating high-quality cat food don’t need supplements. They get everything that they need from their diet.

However, kitties with certain health conditions may benefit from supplements. That determination should only be made by a veterinarian, though.

Possible reasons for supplementation may include:

  • Osteoarthritis
  • Digestive issues
  • Skin conditions
  • Kidney disease
  • Stress/anxiety
  • Immune dysfunction
woman giving pill to a cat
Photo Credit: New Africa, Shutterstock

What Are Examples of Supplements for Cats?

If you’re curious about what supplements may benefit your cat, here are a few of the most commonly recommended ones.

  • Glucosamine/Chondroitin: These are used most commonly for joint issues and osteoarthritis. They help repair and rebuild cartilage and joint fluid.
  • Omega fatty acids: These natural anti-inflammatories may help relieve discomfort for everything from itchy skin and painful joints to kidney disease.
  • Probiotics and prebiotics: Both are important for regular digestion.
  • Single vitamins/minerals/amino acids: Some kitties may benefit from an extra dose of things like B vitamins, taurine, or iron. Each can help with specific health conditions diagnosed by a veterinarian.
  • Immune support: Amino acids like L-lysine may be beneficial in chronic illnesses like feline herpesvirus. Vitamin C and zinc can also be useful.
  • Antioxidants: Things like vitamins C and E and other antioxidants play an important role in healthy aging and fighting chronic issues, such as cancer or kidney disease.

How Are Supplements for Cats Given?

Most supplements for cats are given orally. They may be in a pill or chewable tablet form or a powder or liquid that you can add to their food. Some are in a gel or paste form that kitties can lick up. Since these products are meant to be given orally, they will likely be tasty, so be sure to store them in a safe place where your kitty can’t get to them, to prevent them from helping themselves and potentially creating serious issues.

On that same note, be sure you’re not over-supplementing your kitty. Something being too much of a good thing is also true when it comes to supplements. Stick to the recommended dosage provided by a veterinarian.

Need veterinary advice but can't get to the clinic? Catster recommends PangoVet, our online veterinary service. Talk to a vet online and get the answers and advice you need for your cat without having to leave your living room — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

What Happens If You Miss a Dose of a Cat Supplement?

Supplements aren’t medications, so their administration isn’t usually as strict, but that doesn’t mean you can give it haphazardly. If you forget to give your kitty their vitamins/amino acids/etc. one day, just give them the dose as soon as you think of it, and continue with your regular schedule. Don’t double up on a dose or withhold it unless advised to do so by a vet.

siamese kitten eating from a stainless bowl
Photo Credit: Pixel-Shot, Shutterstock

Potential Side Effects of Supplements for Cats

The biggest downside of cat supplements is that they aren’t as highly regulated as things like antibiotics, anti-inflammatories, or other medications. That means they don’t have to meet a certain standard of quality and efficacy. So, while some supplements may be just what the doctor ordered, others may be less helpful and even unsafe.

To help avoid potential issues, see if the supplement that you choose is approved by the National Animal Supplement Council to ensure that it’s safe, and then get a proper dose from a veterinarian. They may also have recommendations for products that they view as safe and effective.

Other side effects may show up if your kitty doesn’t need the supplement. For example, a cat that isn’t suffering from an iron deficiency can actually experience iron toxicity if they get too much from a supplement. The same goes for other vitamins and minerals. Keep in mind that your cat will likely need to ingest a large amount of the supplement to create issues, but it can still happen. That’s why it’s so important that you don’t self-prescribe supplements for your cat just because it feels right. You should have a veterinarian’s signoff before giving them anything.

vet holding a cat
Image Credit: Yana Vasileva, Shutterstock

divider cat faces 2 oct 2024

Frequently Asked Questions

Should Cats Take Supplements?

The quick and easy answer is that it depends. Most healthy kitties on a good diet aren’t going to need anything additional. However, some kitties that are experiencing certain health issues may thrive with supplementation. Those beneficial additions should be determined by a vet, though.

What Is the Most Important Supplement for Cats?

No one supplement is the best for every cat out there. Instead, some are better than others, depending on the cat’s age and health status. For example, older kitties may benefit from supplements of glucosamine, chondroitin, omega fatty acids, and antioxidants to help with healthy aging, while a long-haired kitty may benefit from pro- and prebiotics to help move hairballs through. It all depends on the individual and what a veterinarian deems best.

How Do I Add Supplements to My Cat’s Food?

Supplements are designed with ease of administration in mind. No one likes to give a cat a pill, so most will be flavored to entice a cat to eat them willingly or to easily add them to your cat’s food. If you’re having trouble getting your pet to take their supplement, speak to a vet about alternatives.

divider cat faces 2 oct 2024

Conclusion

Supplements have their place in veterinary medicine, but they aren’t necessary for every kitty. If you think that your cat may benefit from supplementation, talk to your veterinarian first. They will be able to determine if your cat can use the supplement and recommend safe and effective products. Never give your kitty anything without first talking to your vet.

See also:


Featured Image Credit: New Africa, 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.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Chatting About the Rainbow Bridge, Euthanasia, and Laughter During Grief | Chatty Cattys, Episode 24

If you’ve ever felt the loss of a beloved cat, or are dreading the day when your pet crosses the rainbow bridge, you’ll...

The Simple Reasons Cats Refuse to Let Anyone Use the Bathroom Alone

Cats have an extraordinary talent for making themselves present in the most inconvenient places, and the bathroom ranks near the top of the...

A Paw-sitive Milestone: Canada Officially Becomes a Declaw-Free Nation

Canada has officially become a declaw-free nation. On May 25, 2026, a new regulation was filed in Ontario under the Provincial Animal Welfare...

The Surprisingly Simple Ways to Help a Cat With Hairballs

Cats spend an astonishing amount of time grooming. It is part hygiene routine, part comfort ritual, and part instinct that traces back generations....

More related

9 Pet Friendly Hotels in Daytona Beach (2026 Update)

Daytona Beach is one of the most iconic vacation spots in the Southeast. It has long been a hub for spring break travelers,...

Can Cats Take Metacam (Or Any NSAIDS)? Facts & FAQ (Vet Answer)

Has your cat ever had an operation, or perhaps been seen for an injury or wound? If so, you might have heard of...

Do Cats Like the Dark? Vet-Verified Vision Facts (With Infograph)

All cat parents know that their adorable feline turns into a formidable predator when night comes. Frantic runs all over the house at...

How to Treat Mange in Feral Cats: Our Vet Gives 8 Tips & Tricks

If you’ve got a problem with some itchy feral felines, all of you—yes, yourself included—will be desperate to get it under control. Mange...

Keep reading

Do Cats Hiss When They Play Or Are They Fighting? Feline Behaviour Explained (Vet-Verified)

One of the challenges of living with cats is understanding their behavior. While they can’t verbally tell us how they’re feeling, they are constantly communicating with us through their sounds and body language. Among their vocal repertoire, hissing is one...

cat meowing

Why Are My Cats Whiskers Breaking Off? 5 Vet-Reviewed Possible Reasons

Have you ever worried about a few split ends in your hair? If it’s just an occasional strand, probably not. But imagine that every time you brush your hair you end up with a handful of broken hairs. That’s when...

Long white whiskers and nose of a gray cat

Why Is My Cat Missing the Litter Box? 11 Vet Reviewed Reasons & Advice

If your feline is missing the litter box, it can quickly become very annoying. You’ll have to clean around the litter box as well as clean out the litter box. It may even seem like your cat is missing the...

maine coone in litter box

Can Cats Eat Limes? Vet Approved Facts & FAQ

Our feelings about our pets have changed. Many people see themselves as parents instead of owners. That’s reflected in the fact that some manufacturers label their products as human-grade, although no legal framework for this term exists; it’s simply marketing....

Can Cats Eat Limes

Why Do Cats Like the Beach? 3 Fun Reasons & Things to Consider

Why do dogs get all the credit for being fun to take on vacation? Your cat is also ready for an adventure! Granted, it takes preparation and a few safety precautions, but there’s no reason that your feline friend can’t...

Cat on the ocean beach during the day in Railay beach Thailand

How Do Cats Carry Their Kittens? & Why It Doesn’t Hurt Them (Vet-Verified Info)

If your cat has recently had kittens, you’ve probably seen her moving the kittens around by the scruff of their necks. Many pet parents worry that this hurts the kitten and that the mother cat does it as a form...

Mother cat running with newborn kitten in her mouth

How Often Should a Cat Poop? Vet-Reviewed Facts to Know

Every living being poops, including cats, so pooping should not be a taboo subject. Owners need to know how often their cats should poop to understand what is healthy and unhealthy. This way, cat owners can ensure optimal health and...

siamese cat sitting in a litter box

10 Best Premium Cat Foods of 2026 – Reviews & Top Picks

Cats are obligate carnivores. As such, their food should be primarily meat-based while supplementing proteins like chicken and turkey with additional ingredients to provide a fully balanced diet. While cheap cat foods have long relied on unnamed meat by-products combined...

cat eating kibbles from red bowl

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.