Cat Supplies

The Best Cat Milk Replacers

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Our picks are based on Amazon bestseller rankings, verified customer ratings, and product availability. We update our recommendations regularly to ensure accuracy.

When kittens are orphaned or weaned too early, a milk replacer is essential for their survival and healthy development. Providing the correct nutrition mimics mother's milk, ensuring they receive vital antibodies and nutrients. Choosing a high-quality formula supports strong growth, a healthy immune system, and proper digestion during this critical life stage.

No. 1
Hartz Powdered Kitten Milk Replacer Formula - 11Oz
  • Precisely Formulated To Match A Mother Cat’S Milk
  • Quick-Mix Powder Blends Easily With Room Temperature Water For On-Demand Feeding; Use With The Hartz Nursing Bottle (Sold Separately)
  • Features Calcium For Strong Bones, Taurine For Heart And Eye Development, Lysine For Respiratory Health And Linoleic Acid To Support Healthy Skin And Coat
  • Can Also Be Used As A Food Supplement For Pregnant And Nursing Mothers, As Well As Convalescing Cats
  • Regular Cow’S Milk Is Not A Sufficient Source Of Nutrition For A Kitten
  • The Optimal Balance Of Vitamins, Minerals, And Essential Nutrients To Support Growth And Development During The Formative First 6 Weeks Of Life.
SaleNo. 2
Pet-Ag KMR Kitten Milk Replacer Powder - 12 oz - Powdered Kitten Formula with Prebiotics, Probiotics...
  • KITTEN MILK REPLACEMENT - When mom can’t nourish them, KMR can. Scientifically the next best to mother’s milk, KMR provides all the nutritional elements necessary for kittens; newborn to six weeks old.
  • COMPLETE, BALANCED NUTRITION - Our formula is closest to mother's milk in protein, fat and carbohydrates. We’ve also added vitamins, minerals and trace nutrients; plus prebiotics and probiotics for healthy immunity and digestion.
  • EASY TO DIGEST - KMR is highly palatable and formulated with a special fiber blend for easy digestion and Improved gut health.
  • EASY-TO-MIX FORMULA - Whisk or Shake 1 part powdered KMR into 2 parts warm water. Do not mix more KMR than can be consumed in 24 hours. Do not use a blender.
  • ABOUT US - PetAg is a trusted leader in pet wellness, with science-backed formulas in our milk replacers, health supplements, and grooming products helping pet owners to proactively enhance the lives of their pets, for more healthy years together.
No. 3
PetAg KMR Kitten Milk Replacer Powder - 12 oz - Powdered Kitten Formula with Prebiotics, Probiotics & Vitamins...
  • KITTEN MILK REPLACEMENT - When mom can’t nourish them, KMR can. Scientifically the next best to mother’s milk, KMR provides all the nutritional elements necessary for kittens, newborn to six weeks old.
  • COMPLETE, BALANCED NUTRITION - Our formula is closest to mother's milk in protein, fat, and carbohydrates. We’ve also added vitamins, minerals, and trace nutrients; plus prebiotics and probiotics for healthy immunity and digestion.
  • EASY TO DIGEST - KMR is highly palatable and formulated with a special fiber blend for easy digestion and improved gut health.
  • EASY-TO-MIX FORMULA - Whisk or shake 1 part powdered KMR into 2 parts warm water. Do not mix more KMR than can be consumed in 24 hours. Do not use a blender.
  • ABOUT US - PetAg is a trusted leader in pet wellness, with science-backed formulas in our milk replacers, health supplements, and grooming products helping pet owners to proactively enhance the lives of their pets, for more healthy years together.
No. 4
Under the Weather Kitten Milk Replacer Powder + Colostrum | Kitten Milk Replacement Formula | Nutrient-Rich...
  • Complete Mother’s Milk Substitute: This nourishing kitten milk replacer is scientifically formulated to mimic the nutritional profile of a mother cat’s milk. A trusted choice for orphaned, underweight, or nursing-challenged kittens needing...
  • Colostrum for Early Immune Support: Fortified with bovine colostrum, this gentle formula delivers vital antibodies to help young immune systems build strength and resilience. A comforting, protective start for your growing feline.
  • Formulated for Sensitive Digestion: Easily digestible milk proteins, gentle fats, and tailored nutrients support delicate tummies and help prevent digestive discomfort. Ideal for kittens and cats with dietary sensitivities.
  • Adaptable Nutrition for Every Age: From bottle-feeding newborns to nourishing pregnant or senior cats, this kitten formula serves as a complete meal, treat, or supplement. Flexible feeding to support your cat at any stage.
  • Vet-Formulated & MFD in USA: Developed by veterinarians, this high-fat, high-protein formula includes taurine, vitamins A, D3, and B12 to fuel development and vitality. Trustworthy nutrition your pet deserves.
No. 5
Whiskas Catmilk Plus Drink for Cats and Kittens 24 Count, 6.75 Ounces
  • Easy-to-digest, protein-rich milk for cats with 98% reduced lactose
  • Enriched with essential nutrients, such as calcium and crude protein that cats need
  • Whiskas Catmilk Drinks are naturally high in calcium to promote healthy teeth and bones
  • With a real milk flavor cats love, it's specially formulated for even the most sensitive stomachs
No. 6
Pet-Ag PetLac Powder for Kittens - 10.5 oz - Kitten Milk Replacement Powder for Kittens Newborn to Six Weeks...
  • KITTEN MILK REPLACEMENT-PetLac kitten milk replacement powder provides complete nutrition for proper growth and development for kittens, newborn to six weeks old
  • COMPLETE, BALANCED NUTRITION-As a food source for orphaned, rejected, nursing, or weaning kittens, this formula provides vitamins, minerals & amino acids. It also supplies extra nutrition for thin or older cats
  • EASY TO DIGEST-PetLac is highly palatable and contains prebiotics and probiotics for easy digestion and improved gut health
  • DIRECTIONS-Mix one tablespoon powder with two tablespoons warm water to make approximately 2-1/3 tablespoons (7 teaspoons/35mL) of liquid. Opened powder can be refrigerated for up to 3 months, or can be frozen for up to 6 months
  • ABOUT US-PetAg is a trusted leader in pet wellness, with science-backed formulas in our milk replacers, health supplements, and grooming products helping pet owners to proactively enhance the lives of their pets, for more healthy years together
SaleNo. 7
PetAg KMR Kitten Milk Replacer Liquid - 16 oz - Ready-to-Feed Formula with Vitamins for Newborn Kittens to...
  • KITTEN MILK REPLACEMENT - When mom can’t nourish them, KMR can. Scientifically the next best to mother’s milk, KMR provides all the nutritional elements necessary for newborn kittens to 1 year old.
  • COMPLETE, BALANCED NUTRITION - Our formula is closest to mother's milk in protein, fat, and carbohydrates. We’ve also added vitamins, minerals, and trace nutrients for healthy immunity and digestion.
  • EASY TO DIGEST - KMR is highly palatable and formulated with a special fiber blend for easy digestion and improved gut health.
  • EASY-TO-USE FORMULA - Shake gently before use. Warm KMR to room or body temperature before serving. Portable, Tetra Pak container is resealable. Once opened, container must be refrigerated and discarded after 72 hours.
  • ABOUT US - PetAg offers solutions to enrich the lives of animals & their caregivers. From nutritional supplements to grooming products, all our products are science-backed, formulated with high-quality ingredients, and supported by quality control.
No. 8
Pet-Ag PetLac Liquid for Kittens - 32 oz - Ready-to-Feed Milk Replacement for Kittens Newborn to Six Weeks Old...
  • KITTEN MILK REPLACEMENT - PetLac ready-to-feed milk replacement provides nutrition for proper growth and development for newborn Kittens to 1 year old.
  • MILK REPLACEMENT FORMULA- As a food source for orphaned, rejected, nursing, or weaning Kittens, this formula contains milk and vegetable protein.
  • EASY TO DIGEST - PetLac is highly palatable for all breeds of Kittens.
  • DIRECTIONS - Shake gently. Refrigerate after opening. Features a resealable TetraPak for multiple Puppies.
  • ABOUT US - PetAg is a Trusted leader in pet wellness, with science-backed formulas in our milk replacers, health supplements, and grooming products helping pet owners to proactively enhance the lives of their pets, for more healthy years together.
No. 9
PetAg KMR Goat’s Milk Kitten Milk Replacer Liquid - 16 oz - Liquid Kitten Formula with Vitamins, Minerals...
  • KITTEN MILK REPLACEMENT - When mom can’t nourish them, KMR Goat’s Milk can. Scientifically the next best to mother’s milk, KMR Goat’s Milk provides all the nutritional elements necessary for newborn kittens to 1 year old.
  • COMPLETE, BALANCED NUTRITION - Our formula is closest to mother's milk in protein, fat, and carbohydrates. We’ve also added vitamins, minerals, and trace nutrients.
  • EASY TO DIGEST - KMR Goat’s Milk is highly palatable and formulated with whole goat’s milk and a special fiber blend for easy digestion and improved gut health. This formula is complete and balanced closest to mother’s milk in protein, fat, and...
  • EASY-TO-MIX FORMULA - Shake gently before use. Warm KMR to room or body temperature before serving. Portable, Tetra Pak container is resealable. Once opened, container must be refrigerated and discarded after 72 hours.
  • ABOUT US - PetAg offers solutions to enrich the lives of animals & their caregivers. From nutritional supplements to grooming products, all our products are science-backed, formulated with high-quality ingredients, and supported by quality control.
No. 10
Manna Pro Nurse All Multi-Species Milk Replacer, Great for Calves, Lambs, Goat Kids, Foals, Baby Pigs, Llamas...
  • MILK REPLACER WITH PROBIOTICS: Suitable for up to 9 young animal species including puppies, kittens, calves, lambs, goats, foals, piglets, llamas, and crias; providing probiotics and balanced nutrition to support healthy growth and development.
  • MADE WITH PROTEIN AND FAT: Contains 24% protein and 24% fat; supporting fast, healthy growth, strong muscle development, and overall vitality for young animals during critical early stages of life.
  • ALL MILK FORMULA WITH PROBIOTICS: Made with high-quality all-milk protein; supporting healthy growth, proper development, and overall performance for young animals during critical early stages of life.
  • SUPPORTS HEALTHY DIGESTION FOR YOUNG ANIMALS: Powered by Opti-Gut probiotics; promoting gut health, nutrient absorption, and digestive balance to support overall growth, vitality, and wellbeing for young animals.
  • EASY TO MIX FORMULA: Designed for quick and convenient preparation; ensuring fast mixing, effortless feeding, and optimal consumption so young animals receive balanced nutrition efficiently for healthy growth and development.

Last update on 2026-07-18 / Affiliate links / Images from Amazon Product Advertising API

How to Choose the Best Cat Milk Replacers

Key Factors When Choosing a Cat Milk Replacer

When selecting a milk replacer for kittens, consider these crucial elements to ensure optimal health and development:
  • Nutritional Profile: Look for formulas that closely mimic the protein, fat, and carbohydrate content of natural cat's milk. High-quality ingredients like dairy proteins (whey, casein) are important. Ensure the replacer is fortified with essential vitamins, minerals, and amino acids like taurine, which is critical for feline heart health and vision.
  • Digestibility and Ingredients: Kittens have sensitive digestive systems. Opt for formulas that are easily digestible and free from common allergens or artificial additives. Ingredients like prebiotics and probiotics can further support gut health, aiding in nutrient absorption and reducing the risk of digestive upset.
  • Ease of Preparation and Feeding: Consider how easy the powder is to mix and whether it dissolves smoothly without clumping. Some products come with feeding bottles and nipples, which can be convenient for new owners. Check for clear mixing instructions to ensure the correct nutrient concentration.

Frequently Asked Questions

How often should I feed a kitten milk replacer?
The feeding frequency depends on the kitten's age, with younger kittens requiring more frequent meals. Typically, newborns need to be fed every 2-3 hours, gradually decreasing to every 4-6 hours as they approach weaning age.
How do I prepare the milk replacer?
Always follow the manufacturer's instructions precisely, as the ratio of powder to water is crucial for proper nutrition. Mix thoroughly until smooth and ensure it's warmed to body temperature (around 100u00b0F or 37.8u00b0C) before feeding.
Can I make my own milk replacer for kittens?
It is strongly advised against making homemade milk replacers. Commercially formulated products are balanced to meet a kitten's specific nutritional needs, and homemade concoctions can easily be deficient or unbalanced, leading to serious health issues.
How long should I feed a kitten milk replacer?
Kittens typically need milk replacer until they are ready to transition to solid food, usually around 4-6 weeks of age. At this point, they can begin lapping up gruel made from kitten food and water, gradually moving to dry kibble.