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Best Cat Weight Gain Supplements

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Has your vet told you that your cat is underweight and needs to put on a few pounds? There are many reasons why a kitty might have trouble maintaining her weight, and your veterinarian will work on figuring out the cause of the weight loss. From there, you might be told that a feline weight gain supplement is one way to help your pet get back into a healthy weight range.

Note: When it comes to supplementing your pet’s diet, it’s always best to work closely with your vet, who can provide guidance and tips, and steer you in the right direction when it comes to the highest quality products available. And, again, if there is an underlying condition that is causing your furry friend to lose weight, you’ll want to be sure you know what’s going on so you can properly treat the problem under the direction of your vet.

Wondering what some of the best cat weight gain supplements are? We’ve compiled a list that you can review below, and it includes the products’ ingredients so you can compare them side-by-side and make a more informed decision regarding the quality of the ingredients that your pet consumes. Also, we’ve listed the products in no particular order, as this is just to give you an idea of what’s available and what your veterinarian might recommend trying.

  1. Vetoquinol Nutri-Cal Oral Gel Dog & Cat Supplement

Vetoquinol Nutri-Cal Oral Gel is for dogs and cats of all ages, and it is a high-calorie, vitamin-fortified supplement that also contains omega-3 and omega-6 essential fatty acids. Designed for kitties that are older, debilitated, or just picky, this gel can provide the extra calories, energy, and vitamins that your furry companion would need in those circumstances. And it has an appealing taste to help make it easy to give to your pet.

This supplement is highly palatable, so it should be easy to administer. To get your cat used to the flavor, you can begin by placing a small amount of this gel on her nose or in her mouth. Then, follow the directions on the label to figure out how much of the supplement to give, based on your pet’s weight.

The ingredients in this supplement include:

  • Corn syrup
  • Soybean oil
  • Malt syrup
  • Purified water
  • Fish oil (a source of omega 3 and omega 6 acids)
  • Cane molasses
  • Sodium propionate
  • Hydrolyzed collagen protein (a source of amino acids)
  • Potassium sorbate
  • Silicon dioxide
  • DL-alpha tocopheryl acetate (vitamin E)
  • Xanthan gum
  • Magnesium sulfate
  • Manganese sulfate
  • Ferrous sulfate heptahydrate
  • Cyanocobalamin (vitamin B12)
  • Thiamine HCI (vitamin B1)
  • Niacinamide (vitamin B3)
  • Dexpanthenol (vitamin B5)
  • Pyridoxine HCI
  • Potassium iodide
  • Vitamin A palmitate
  • Folic acid (vitamin B9)
  • Riboflavin (vitamin B2)
  • Vitamin D3

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  1. Tomlyn Nutri-Cal High-Calorie Dietary Cat Supplement

The Tomlyn Nutri-Cal High-Calorie Dietary Cat Supplement is a veterinarian-formulated product designed for kittens and cats that require extra nutrients and calories. It can provide vitamins, minerals, and carbohydrates, along with omega-3, omega-6, and omega-9 fatty acids that can help support the health of your kitty’s skin, joints, and heart. Plus, it has a pleasing flavor to make it easier to get your cat to take this supplement whenever necessary.

This product, which is intended for supplemental or intermittent use only, might help cats who have a reduced appetite and are refusing to eat, those who are picky eaters, those who aren’t doing well, those who need to gain weight, and those who are in need of nutritional supplementation because of a physiological challenge. It may also help your kitty if she is a senior, if she’s recovering from an illness or procedure, or if she is very active. It is highly palatable, it may help stimulate the appetite, its calories and nutrients are easily absorbed, and it can provide a concentrated source of vitamins and minerals.

As is the case with all of the products on this list, it’s important to follow the dosing instructions carefully. The appropriate dose will be based on factors like your pet’s age, weight, and the reason why she needs this supplement. No matter what, to get your kitty acquainted with the malty flavor, you can try placing a bit of the gel on her nose or paws or in her mouth.

The ingredients in this supplement include:

  • Corn syrup
  • Soybean oil
  • Malt syrup
  • Water
  • Fish oil
  • Cane molasses
  • Sodium propionate (a preservative)
  • Gelatin by-products
  • Silicon dioxide
  • Potassium sorbate (a preservative)
  • DL-alpha tocopheryl acetate (vitamin E supplement)
  • Xanthan gum
  • Magnesium sulfate
  • Manganese sulfate
  • Ferrous sulfate heptahydrate
  • Vitamin B12 supplement
  • Thiamin hydrochloride
  • Niacin supplement
  • D-panthenol (source of pantothenic acid)
  • Pyridoxine hydrochloride
  • Potassium iodide (source of iodine and potassium)
  • Vitamin A palmitate
  • Folic acid
  • Riboflavin 5’-phosphate sodium (source of vitamin B2 and phosphorus)
  • Vitamin D supplement

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  1. PetAg High Calorie Gel Cat Supplement

The PetAg High Calorie Gel Cat Supplement can provide kitties who are 8 weeks of age and older with extra calories. It is designed for seniors, pregnant and lactating cats, and rapidly growing young cats who need to maintain a healthy weight and plenty of energy. And it is also a good choice for kitties who are picky eaters, as well as those who are recovering from surgery or illness. Plus, in addition to supporting your pet’s energy level and weight, this product can also help your feline friend maintain healthy skin and coat.

This supplement comes in an easy-to-feed gel that has an appealing chicken flavor. Before giving it to your pet, just be sure to read the directions carefully so you can provide the optimal amount based on your cat’s weight and unique needs. And remember, this product is only intended for supplemental or intermittent feeding, and it shouldn’t be given to kittens that are younger than 8 weeks of age.

The ingredients in this supplement include:

  • Vegetable oil
  • Sugar
  • Corn syrup
  • Corn starch
  • Malt syrup
  • Cane molasses
  • Rice protein
  • L-carnitine
  • Potassium sorbate (preservative)
  • Sorbic acid (preservative)
  • Potassium chloride
  • Artificial chicken flavor
  • Vitamin A supplement
  • Vitamin D supplement
  • Vitamin E supplement
  • Vitamin B12 supplement
  • Riboflavin supplement
  • Niacin supplement
  • Calcium pantothenate
  • Folic acid
  • Guar gum
  • Pyridoxine hydrochloride
  • Thiamine hydrochloride
  • Biotin
  • Iron proteinate
  • Ethylenediamine dihydroiodide
  • Maltodextrins
  • Xanthan gum
  • L-arginine
  • Magnesium sulfate
  • Manganese sulfate
  • Taurine
  • Butylated hydroxy anisole (preservative)

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  1. NaturVet Cat-Cal Nutritional Cat Gel

The NaturVet Cat-Cal Nutritional Cat Gel is a source of calories, protein, vitamins, minerals, omega-3 fatty acids, and omega-6 fatty acids. Intended for supplemental and intermittent feeding only, this product has an appealing flavor to make it easier to entice your kitty to eat it.

This supplement is suitable for adult cats and kittens over 12 weeks of age. You can give it to your pet by placing some on your finger and letting her lick it off, by feeding it to her on a dish, or by mixing it into her food. Follow the directions carefully to determine the appropriate dose.

The ingredients in this product include:

  • Malt syrup
  • Corn syrup
  • Soybean oil
  • Methylcellulose
  • Cane molasses
  • Water
  • Cod liver oil
  • Soy protein concentrate
  • Vitamin E supplement
  • Sorbic acid (a preservative)
  • Potassium sorbate (a preservative)
  • Manganese sulfate
  • Iron proteinate
  • Thiamine hydrochloride
  • Niacinamide
  • Calcium pantothenate
  • Magnesium sulfate
  • Pyridoxine hydrochloride
  • Vitamin A supplement
  • Vitamin D3 supplement
  • Potassium iodide
  • Riboflavin-5’-Phosphate
  • Folic acid
  • Vitamin A palmitate
  • Vitamin B12 supplement

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  1. Under the Weather Ready Cal High Calorie Food Nutritional Gel Cat Supplement

 

The Under the Weather Ready Cal high-calorie supplement for cats is a little different because it comes in a syringe. This makes it easier to measure the right amount to give to your pet whenever she needs extra nutritional support and additional calories to help her gain weight. Designed for cats who aren’t eating normally because of factors like stress, anxiety, or a medical problem or procedure, this product delivers vitamins, minerals, and essential fatty acids.

Like all of the other products on this list, this one is also intended only for intermittent or supplemental feeding. The palatable flavor helps ensure your kitty will gladly eat this up, but to acquaint your feline friend with the flavor, you can put a small amount of the gel in her mouth or on her nose. Then, follow the directions on the label carefully to ensure you provide the right dosage for your pet, based on her weight and how much she is eating. You can give it to her directly or mix it into her food, and the dial-a-dose tube helps ensure accuracy when it comes to dosing

The ingredients in this vet-formulated supplement include:

  • Malt syrup
  • Soybean oil
  • Corn syrup
  • Cane molasses
  • Salmon oil
  • DL-alpha tocopherol acetate (vitamin E)
  • Sodium benzoate (preservative)
  • Manganese sulfate
  • Magnesium sulfate
  • Calcium pantothenate
  • Niacinamide
  • Iron proteinate
  • Pyridoxine hydrochloride
  • Vitamin A acetate
  • Thiamine hydrochloride
  • Mixed tocopherols
  • Sodium chloride
  • Trisodium phosphate
  • Riboflavin
  • Potassium iodide
  • Choline bitartrate
  • D-activated animal sterol (vitamin D3 supplement)
  • Folic acid
  • Vitamin B12 supplement

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  1. PetAg CatSure Complete Meal Replacement Supplement

To help get your cat to a healthy weight, consider giving the PetAg CatSure Complete Meal Replacement Supplement a try. Unlike the many gels that are available, this product comes in the form of a powder that is made with lactose-free milk proteins. Designed for cats who are 1 year of age and older, this supplement might be helpful if your kitty isn’t eating like she should. It’s also a good option for senior cats, and for pets that are recovering from an injury or illness.

The ingredients in this vanilla flavored product help support your feline friend’s lean muscles. And this supplement also gives your pet extra liquid calories, vitamins, minerals, taurine, prebiotics, and probiotics whenever she needs them, so it can even serve as a meal replacement if necessary. Plus, it’s also appropriate for kitties who have sensitivities or allergies because there isn’t any corn or wheat in the ingredients.

The liquid calories are easy to digest, as you have to mix the powder with water (this could be a good way to ensure your pet remains hydrated too). However, this product is not intended to be used as kitten formula. Be sure to follow the directions on the label to learn how to mix this product correctly, how to give your kitty the appropriate amount, and how to store it properly.

The ingredients in this product, which meets the AAFCO Cat Food Nutrient Profile for adult maintenance, include

  • Dried milk protein concentrate
  • Corn syrup solids
  • Dried whey protein concentrate
  • Dried cream powder (sweet cream solids nonfat dry milk, sodium caseinate)
  • Soybean oil
  • Dried skimmed milk
  • Monocalcium phosphate
  • Guar gum
  • Potassium chloride
  • L-arginine
  • Casein
  • Dextrose
  • Lecithin
  • L-carnitine
  • Choline chloride
  • DL-methionine
  • Magnesium sulfate
  • Taurine
  • Natural and artificial vanilla flavor
  • Vitamin E supplement
  • Calcium carbonate
  • Iron proteinate
  • Fructooligosaccharides (FOS)
  • Vitamin D supplement
  • Niacin supplement
  • Calcium pantothenate
  • Thiamine hydrochloride
  • Pyridoxine hydrochloride
  • Riboflavin supplement
  • Vitamin A supplement
  • Copper proteinate
  • Calcium iodate
  • Biotin
  • Vitamin B12 supplement
  • Dried Bifidobacterium bifidum fermentation product
  • Dried Lactobacillus fermentum fermentation product
  • Dried Lactobacillus acidophilus fermentation product
  • Dried Lactobacillus casei fermentation product
  • Dried Lactobacillus plantarum fermentation product
  • Dried Enterococcus faecium fermentation product
  • Dried Pediococcus acidilactici fermentation product

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  1. Miracle Vet High Calorie Weight Gainer for Dogs & Cats

If your cat is losing weight and you’re in search of a supplement that can help her gain back the weight efficiently, veterinarian-approved Miracle Vet High Calorie Weight Gainer for Dogs and Cats might be the right choice. It is designed to help your pet gain weight quickly, and it does so by providing a variety of nutrients that can help support malnourished and underweight animals. Its ingredients, which include healthy fats, high-quality protein, and 29 essential vitamins and minerals, can help increase appetite and energy. A 16-ounce bottle contains 2,400 nutrient-dense calories, and 87% of the calories come from healthy fats.

To give this product, which has a natural vanilla flavor, to your cat, all you have to do is add a few drops to her water, wet food, or dry food. Alternatively, you can feed it directly to your kitty using a syringe. No mixing, shaking, or stirring is required. Simply follow the instructions on the label to determine the correct dose. And you can give this supplement to pregnant and nursing cats, as well as cats who are 4 weeks of age and older.

The ingredients in this natural liquid weight gainer include:

  • Omega fish oil
  • Canola oil
  • Purified water
  • Dextrose
  • Whey protein
  • Natural vanilla flavor
  • Vegetable lecithin
  • Vitamin A palmitate
  • Beta carotene
  • Cholecalciferol
  • DL-alpha-tocopheryl acetate
  • Biotin
  • Folic acid
  • Niacinamide
  • Calcium d-pantothenate
  • Thiamin HCl
  • Cyanocobalamin
  • Riboflavin
  • Pyridoxine HCl
  • Ascorbic acid
  • Phytonadione
  • Copper gluconate
  • Potassium iodide
  • Ferrous fumarate manganese sulfate
  • Sodium selenite
  • Zinc sulfate
  • Choline bitartrate
  • Calcium carbonate
  • Taurine
  • Polysorbate
  • Sorbic acid
  • Calcium propionate (to maintain freshness)
  • Caramel Color (natural)
  • Xanthan Gum
  • Rosemary Extract

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Remember, Consulting with a Vet is Always Wise

Ensuring your cat is at a healthy weight is one of the many ways to help keep her well and happy. Now that you have a better idea of some of the weight gain supplements for felines that are available for purchase over the counter, just keep in mind that consulting with your veterinarian can help you select the one that will be right for your unique companion. Then, be sure to use the product as directed, and let your veterinarian know if your pet’s condition doesn’t improve, if it worsens, or if there are any changes in your cat’s symptoms, behavior, appetite, etc., in case you need to make any adjustments or switch to a different product. Hopefully, before long, your kitty will be within the appropriate weight range again.


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