10 Best Cat Vitamins & Supplements 2023: According to Reviews | Chewy

The 10 Best Cat Vitamins & Supplements

According to Customer Reviews

Looking for the best cat vitamins & supplement? These are today’s best-selling and top-rated cat vitamins & supplements that Chewy pet parents, like you, love. We update this list every day, so you can be sure you’re getting the timeliest product recommendations available.

Tomlyn Immune Support Powder Immune Supplement for Cats, 3.5-oz tub

Rated 4.5053 out of 5 stars
475
$17.99Chewy Price

Is this right for my pet?

Lifestage
Kitten, Adult, Senior
Top Ingredients
Active Ingredients: L-Lysinehydrochloride., Inactive Ingredients: Brewer's Dried Yeast, Hydrolyzed Fish (Enzymatic), Hydrolyzed Poultry Liver (Enzymatic), Mixed Tocopherols (a Preservative)
Food Flavor
Chicken
Food Form
Supplement
From customer reviews
“solved all our problems! Our kitten was getting constant eye irritation, so our vet recommended giving him Lysine. We gave him little chewable treats for a while, but they were a nuisance, since we had to crumble them up really small for him to eat them, and they made our hands smell pretty strongly. Enter this stuff! It’s quick, easy, comes with a scoop of the right size, it’s a good price — and he loves it. We don’t even have to mix it into his wet food, we just sprinkle it on top twice a day and he gobbles it right up. 10/10 would recommend!”
By jaxcat on Jan 13, 2023

Vetoquinol Epakitin Powder Urinary Supplement for Cats & Dogs, 60g

Rated 4.5306 out of 5 stars
245
$30.99Chewy Price
More options available

Is this right for my pet?

Breed Size
Extra Small Breeds, Small Breeds, Medium Breeds, Large Breeds...
Lifestage
Adult
Top Ingredients
Lactose, Calcium Carbonate, Chitosan, Hydrolyzed Soy Protein
Food Flavor
Unflavored
From customer reviews
“Slight phosphorus level reduction. I started adding this to my cats' wet food after one of them was diagnosed with kidney disease a few months ago. Luckily it seems the cats have accepted the supplement. When her blood was tested again after 2 months, she did have a slight reduction in her phosphorus levels. (This was in combination with a partial renal diet.) I'm definitely going to keep using it for now. My biggest recommendation regarding this stuff is based on the size you order relative to the size of animal you have. First time I purchased, I got the medium size (180g) which comes with a 1g scoop. Once I realized that I'd be using this long term and needed a refill, I bought the larger 300g size. That one comes with a 2.5g scoop, which is really best when you're dealing with an animal over 25 lbs. Anyone buying this for a cat or small dog should buy one of the smaller sizes first, and when you need to refill, buy the largest size but keep the small scoop. (If you have a medium+ dog or are feeding 3+ cats who all share the same food, the large scoop is probably fine.)”
By Heather on Jan 16, 2023

PetAg KMR Powder Milk Supplement for Kittens, 12-oz can

Rated 4.719 out of 5 stars
363
$20.24Chewy Price
More options available

Is this right for my pet?

Lifestage
Kitten
Top Ingredients
Casein, Vegetable Oil (Preserved With Mixed Tocopherols), Dried Skimmed Milk, Dried Cream, Dried Whey Protein Concentrate
Food Flavor
Unflavored
Food Form
Supplement
From customer reviews
“Best for Kittens. Best price around. Best for the kittens. Rapid delivery. Twice the quantity, half the price of pet stores!”
By DavidPNix on Dec 3, 2019
“Best kitten product. It's the only thing I would feed my foster kittens! They're all big and healthy now.”
By Mikk on Jan 26, 2018
“KMR Review. I have used KMR is raising kittens several times and it has never failed me! They love the flavor and eat it down like champs! The bowl/bottle is always empty after the feeding and the kittens always developed very well on KMR. The price was unbelievably low and since I was already ordering cat food for my other cats, it was a win-win situation.”
By KimH on Oct 29, 2018

Is this right for my pet?

Breed Size
Extra Small Breeds, Small Breeds, Medium Breeds, Large Breeds...
Lifestage
Puppy, Kitten, Adult, Senior
Top Ingredient
100% Organic Pumpkin
Special Diet
Organic
From customer reviews
“Works Perfect for Digestion. This product is perfect for both of my dog and cat's digestion, everytime when they have bad digest issue I just provide them with this, and they'll be healthy soon! Amazing healthy can food! And it's easy for storage too.”
By Kaylyn on Dec 2, 2018
“Yumkin deelish!. Bailey Jean has pumpkin with each dinner. Nummy Tum Tum has a better consistency, great smell, and she absolutely loves it! Yet another Chewy success story! Thank you!”
By Catbox on Nov 4, 2022
“Great souce of fiber.. As with the Organic Sweet Potato, this is a great source of fiber for my dog, Ginger. I mix in a couple of tablespoons of each in her kibble and wet food and it is healthy for her and also a filler.”
By Happy on Sep 19, 2022

PetAg KMR Liquid Milk Supplement for Kittens, 11-oz can

Rated 4.652 out of 5 stars
296
$9.58Chewy Price

Is this right for my pet?

Lifestage
Kitten
Top Ingredients
Water, Condensed Skimmed Milk, Milk Protein Concentrate, Soybean Oil, Cream
Food Flavor
Unflavored
Food Form
Supplement
From customer reviews
“Great product. I have a stray cat with three little kittens (less than 8 weeks old) that come to my yard. Little Jesse (mama) looks like a skin and bones; the little ones, not much better. I have been adding the KMR to their diet in hope to improve their overall health and a change of survival. They all love it and eagerly wait for it in the morning and at night. It is a great product, reasonably priced and easy to serve. After opening the can, you can store it in the fridge for a couple of days. After several weeks, I hope to capture them place for adoption.”
By Anna on Sep 2, 2018
“Simply the best... Simply the best.. I have used this in the past and my bottle baby kitten thrived. The powdered stuff is good, but I think the canned is better. This MUST be discarded within 72 hours of opening.”
By MissAnnaHere on Dec 17, 2022
“It saved my newborns. The powder kmr tastes like thin milk with powder. I lost kittens giving them the powder. But this liquid kmr has always been like a French vanilla thick shake and the kittens have always loved it, even one day old babies. It is packed with nutrients. I highly recommend you never buy the powder and always get this liquid. I bought 4 tall cans and I'm saving three of them in case I rescue another mommy and her babies. PS I've been a cat rescuer since '81 having rescued several hundreds and I never leave a mommy behind.”
By BobM on Jun 18, 2022

Solid Gold SeaMeal Skin & Coat, Digestive & Immune Health Powder Grain-Free Supplement for Dogs...

Rated 4.3108 out of 5 stars
399
$26.99Chewy Price
More options available

Is this right for my pet?

Breed Size
Extra Small Breeds, Small Breeds, Medium Breeds, Large Breeds...
Lifestage
Puppy, Kitten, Adult, Senior
Top Ingredients
Dried Seaweed Meal, Flaxseed, Dried Aspergillus Oryzae Fermentation Product, Dried Trichoderma Reesei Fermentation Solubles, Dried Rhizopus Oryzae Fermentation Product
Special Diet
Gluten Free, Grain-Free
From customer reviews
“Didn't work for my cocker spaniel puppy. I bought the product because a professional trainer that I follow on YouTube recommended it but it didn't work for my 3 months puppy. I definitely don't like the powder type of food, my puppy won't eat it easily. I was very careful with the quantity but after two days using it I only got that my puppy throw up the hole thing. I eliminated the product from her food right away and she didn't throwed up again. I know it has good ingredients and woks for cats mostly. Maybe if they made it differently like a topper or something will work better for dogs”
By Tamara on Jan 31, 2023
“My dogs love it!. This works wonders for my Allergy prone dogs. They love it as a food topper with some hot water added and just dig right into their food. So happy I bought this”
By Ethan on Aug 25, 2021
“Highly recommend!. I received a free sample in return for my honest opinion. I have a 100 lb 6 year old, red Labrador retriever. As he ages, I want to make sure I am giving him the best to ensure he is happy, healthy and comfortable and the Solid Gold SeaMeal powder has been an excellent addition to our daily nutrition plan. While my boy can't tell me what he thinks or how he feels, I can say that she has NO problem eating this. I give him this with his dry dog food every meal. It says to give with wet food but he has no problem scarfing it down. After two weeks of use, I have noticed that his skin is shinier, thanks to the Omega fatty acids and I also noticed his poop is not as hard when I clean up after him. I appreciate this brand making sure the supplements are grain free, are made in the USA and contains ingredients that are beneficial for my dog and his overall health. Taking care of my best friend is a priority of mine and I highly recommend the Seal Meal powder”
By Michael on Sep 28, 2022

PetHonesty Wild Alaskan Salmon Oil Liquid Supplement for Dogs & Cats, 32-oz bottle

Rated 4.3846 out of 5 stars
260
$36.99Chewy Price
More options available

Is this right for my pet?

Breed Size
Extra Small Breeds, Small Breeds, Medium Breeds, Large Breeds...
Lifestage
Puppy, Kitten, Adult, Senior
Top Ingredient
Wild-Caught Alaskan Salmon
Special Diet
No Corn No Wheat No Soy, Non-GMO
From customer reviews
“Great food additive. Omega 3 fish oil was recommended by my dog's veterinarian and my Missy hated finding the pill in her food, she would nudged it out and hide it. I tried powders but she is so finicky with her food. I find that this is easy to add to her food and she doesn't seem to mind. She is happy eating it and that makes me happy I got this product.”
By LydSer on Jan 5, 2021
“Great for your dogs fur and skin. I bought this due to my dog having dry skin and fur. I just put a couple pumps of it on my dogs food and let it soak in and let my dogs eat. Either it taste good or they don't even notice it's there. But what I can say is the dryness of their skin is getting better and the fur is feeling softer than usual.”
By Hula on Sep 11, 2020
“My second bottle. Wow ! My package arrived the next day. That's impressive. I have two Great Danes and a Yorkie , all , have sensitive digestions. I used this product once before and notice how much the dogs loved it and how nice their coats looked. I then bought a similar product locally, thinking it would be the same, I was very wrong. I love the way my dogs enjoy PetHonesty Omega 3 , they eat better and look healthier. I love this product.”
By Bren on Dec 24, 2022

PetHonesty Dual Texture Calming Chews Supplement for Cats, 3.7-oz bag

Rated 4.3029 out of 5 stars
350
$14.99Chewy Price

Is this right for my pet?

Breed Size
Small Breeds, Medium Breeds, Large Breeds
Lifestage
Adult
Top Ingredients
Thiamine (Vitamin B1), L-Theanine, Chamomile, Barley Flour, Brewers Yeast
Food Flavor
Chicken
From customer reviews
“Great product. I have a very anxious cat since adding some new friends. This has helped calm him down and relax him so much.”
By snickers on Jan 8, 2023
“Promotes Appetite. I got this on sale. I took off one star, because I can't afford the full price. This smells like human grade, fresh chicken. I didn't notice any calming effects, but it works to get my cat to eat the canned foods that she doesn't really like, just by adding a few of these on top of her food. If this were half the price or I wasn't so poor, I'd buy more .”
By Mish on Feb 4, 2023

Purina Pro Plan Veterinary Diets Hydra Care Liver Flavored Liquid Supplement for Cats, 3-oz pou...

Rated 4.2146 out of 5 stars
522
$14.99Chewy Price
More options available

Is this right for my pet?

Lifestage
Adult
Top Ingredients
Water, Glycine, Whey Protein Isolate, Glycerin, Guar Gum
Special Diet
Indoor
Food Flavor
Meat, Liver
From customer reviews
“Helpful product. Living in the desert with its dry air, keeping hydrated is essential. Making certain my kits stay hydrated is #1. Hydra Care is the answer! My kits love the flavor and I love the convenience: just shake and pour.”
By PeggyJo on May 8, 2022
“Hydrates cat with Urinary Issues. My cat has history of urinary crystals and is on prescription Hills CD food only. Still got crystals. Vet recommended adding this to diet to encourage hydration. Been about 4 months and so far Norman is doing well. He loves flavor and drinks it right up. Virtually no odor to product that I can detect despite it being liver flavored.”
By NormansMom on Oct 30, 2022
“Worth its weight in gold.. My 17 year old little lady has been struggling for the past year - bouts of days long constipation, diarrhea, weight loss and poor appetite with no clear cause, her blood work only showed kidney values on the high end of normal due to dehydration, and not much else. I had tried every food and supplement around with minimal success and she continued to lose weight.I ordered this on a whim. I wish I had tried it months ago. This supplement has changed EVERYTHING. She gets half a packet morning and night with half a can of hounds & gatos wet food mixed with a little warm water and she cannot get enough of it. She’s playing like a kitten again, shes gaining weight, her fur and skin look great, her litter box habits are back to normal. Hydra care is an absolute miracle. Please never stop making it!”
By Niki on May 18, 2022

Is this right for my pet?

Breed Size
Extra Small Breeds, Small Breeds, Medium Breeds, Large Breeds...
Lifestage
Puppy, Kitten, Adult, Senior
Top Ingredient
Active Ingredients: Perna Canaliculus (Green-Lipped Mussel)
Food Flavor
Unflavored
From customer reviews
“Seems Like Good Stuff. I purchased this following my dog's orthopedic surgery, as I was told he would now be more susceptible to arthritis. I looked into this and it does have appropriate studies attached to it. I have 3 dogs total; one who just had the surgery, the other an elderly 8 year old, and a younger dog. All of them really like the flavor and it makes a great food topper because of that. For my youngest dog, I split the 2 recommended scoops between his AM and PM meal, since he likes the taste so much and doesn't necessarily need the dosing all at once. The other 2 get their scoops at once. This is a small bottle, but the scoop is tiny so it would probably stretch for a while. Not sure about the effectiveness since I just started it, but I'm excited to see future results.”
By Jessica on Jan 23, 2023