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Pets Health

Best Kitten Food Supplements

Updated January 2025
Bottom line
Pros
Cons
Best of the Best
PetAg KMR 2nd Step Kitten Weaning Food Supplement
PetAg
KMR 2nd Step Kitten Weaning Food Supplement
For Growing Kittens

The perfect halfway point between milk and solid foods, this nutritious and delicious milk supplement will get eager kittens eating kibble and canned food before you know it.

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For Growing Kittens
Bottom Line

The perfect halfway point between milk and solid foods, this nutritious and delicious milk supplement will get eager kittens eating kibble and canned food before you know it.

Pros

Made with real milk and beef. Easy to digest. High-protein supplement. Easy to prepare. Does not need refrigeration. Contains high levels of vitamins and minerals.

Cons

This supplement requires you to prepare it for your growing kitten, but it’s a straightforward process.

Hartz Kitten Milk Replacer
Hartz
Kitten Milk Replacer
Easiest to Use

This supplement contains the high levels of protein and fat that kittens receive from their mother’s milk, alongside a range of additional nutrients for an all-around healthy milk replacement.

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Easiest to Use
Bottom Line

This supplement contains the high levels of protein and fat that kittens receive from their mother’s milk, alongside a range of additional nutrients for an all-around healthy milk replacement.

Pros

Powdered formula contains real milk proteins, minerals, antioxidants, taurine, and omega fatty acids. Easily blends into water. Easy to digest. Similar to a mother cat’s natural milk.

Cons

Does not contain real milk. Powdered supplement must be mixed for your kitten.

PetAg KMR Kitten Milk Replacer
PetAg
KMR Kitten Milk Replacer
Customer Favorite

Caring for nursing kittens is already tough, but feeding hungry kittens with this simple supplement is as easy as cracking the tab and pouring a bowl of tasty milk filled with vitamins, minerals, and amino acids.

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Customer Favorite
Bottom Line

Caring for nursing kittens is already tough, but feeding hungry kittens with this simple supplement is as easy as cracking the tab and pouring a bowl of tasty milk filled with vitamins, minerals, and amino acids.

Pros

Includes real milk. Available in 2 sizes. Easy to digest. Provides the balanced nutrition a kitten needs. Premade. Excellent solution for nursing kittens.

Cons

Its first ingredient is water, but the second ingredient is skim milk.

Vedco Enercal High Calorie Nutritional Supplement Gel
Vedco
Enercal High Calorie Nutritional Supplement Gel
Nutrient-Rich

From supplementing kitten food to adding protein and calories to a kitten's diet, this high-calorie formula is a good choice.

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Nutrient-Rich
Bottom Line

From supplementing kitten food to adding protein and calories to a kitten's diet, this high-calorie formula is a good choice.

Pros

Rich gel is packed with protein and can be given on top of food. Most kittens like the flavor. A good option for supplementing a regular diet for kittens that have been sickly or need to gain weight. Can be given to cats, dogs, and puppies, too.

Cons

Thick consistency can be a bit messy. Some kittens weren't interested in eating it.

VetriScience Probiotic Everyday
VetriScience
Probiotic Everyday
Trusted Brand

Moving from mother’s milk to solid food is difficult enough without worrying about potential digestive issues down the road, but this comprehensive supplement goes a long way to establish a healthy digestive system.

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Trusted Brand
Bottom Line

Moving from mother’s milk to solid food is difficult enough without worrying about potential digestive issues down the road, but this comprehensive supplement goes a long way to establish a healthy digestive system.

Pros

Yummy duck flavor. Includes probiotics and prebiotics to help craft a strong digestive system from an early age. Treat-like and chewy supplement. Promotes healthy bacteria growth.

Cons

Contains no duck. This supplement is made with grains and soy.

Why trust BestReviews?
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. About BestReviews  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We only make money if you purchase a product through our links, and all opinions about the products are our own. About BestReviews  
BestReviews spends thousands of hours researching, analyzing, and testing products to recommend the best picks for most consumers. We buy all products with our own funds, and we never accept free products from manufacturers.About BestReviews 
How We Tested

We recommend these products based on an intensive research process that's designed to cut through the noise and find the top products in this space. Guided by experts, we spend hours looking into the factors that matter, to bring you these selections.

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First Reviewed
November 09, 2021
56
Models
considered
16
Hours
researched
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Melinda Harris
Written by Melinda Harris

Updated January 2025

Ready to buy now? Shop the best: 

Your adorable tiny kitten is an innocent fluffball who is trying to learn the important things in life, such as how to play nice and what it’s like to eat solid foods for the first time. Whether you need a way to help ween your kittens off of milk, or are searching for a reliable way to add more vitamins, proteins, and overall nutrition to your tiny tiger’s diet, kitten food supplements are an excellent solution. There are many formulas and recipes available to supplement your kitten’s natural diet, and caring pet parents will take the time to research the kitten food supplements that your kitten needs during their first steps into a larger world.

Our Top Picks
PetAg
Best of the Best
PetAg
KMR 2nd Step Kitten Weaning Food Supplement
Bottom Line
The perfect halfway point between milk and solid foods, this nutritious and delicious milk supplement will get eager kittens eating kibble and canned food before you know it.
Shop Now
Hartz
Best Bang for the Buck
Hartz
Kitten Milk Replacer
Bottom Line
This supplement contains the high levels of protein and fat that kittens receive from their mother’s milk, alongside a range of additional nutrients for an all-around healthy milk replacement.
Shop Now
PetAg
Top Pick
PetAg
KMR Kitten Milk Replacer
Bottom Line
Caring for nursing kittens is already tough, but feeding hungry kittens with this simple supplement is as easy as cracking the tab and pouring a bowl of tasty milk filled with vitamins, minerals, and amino acids.
Shop Now
Vedco
Top Pick
Vedco
Enercal High Calorie Nutritional Supplement Gel
Bottom Line
From supplementing kitten food to adding protein and calories to a kitten's diet, this high-calorie formula is a good choice.
Shop Now
VetriScience
Top Pick
VetriScience
Probiotic Everyday
Bottom Line
Moving from mother’s milk to solid food is difficult enough without worrying about potential digestive issues down the road, but this comprehensive supplement goes a long way to establish a healthy digestive system.
Shop Now
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