Ready Cal® High-Calorie Supplement For Cats - 100ccReady Cal® High-Calorie Supplement For Cats - 100ccReady Cal® High-Calorie Supplement For Cats - 100ccReady Cal® High-Calorie Supplement For Cats - 100ccReady Cal® High-Calorie Supplement For Cats - 100ccReady Cal® High-Calorie Supplement For Cats - 100ccReady Cal® High-Calorie Supplement For Cats - 100cc
Ready Cal® High-Calorie Supplement For Cats - 100cc

When cats stop eating—whether they’re old, sick, or just tiny—this high-calorie gel gives them the nourishment they need to bounce back.

Provides essential calories to promote weight gain

Stimulates appetite

Packed with 10 vitamins, 7 minerals

Boosts energy

Person with a kitten on their shoulder, wearing a denim jacket, in a garden.

“This product literally saved my kitties life. We had been to 4 vets and none of them could explain or cure her ongoing diarrhea. They did multiple tests, changed her food, put her on medications, but nothing worked. After using this product for 2 weeks she was a normal kitty. She is no longer a " splat cat" and she has been able to gain weight, eat normal food, and have a great life😊”

Melanie

Verified Buyer

Purchase Options:

$24.99
1

FREE Shipping Above $30

CUSTOMERS USUALLY BUY

Maximize Your Cat's Caloric Intake with This Recommended Duo!

The syringe is perfect for quick, measured calories, while the powder can be mixed into food for a sustained calorie boost throughout the day. Ensure your cat gets the total care they need to thrive!

Tube of high-calorie food supplement for cats with dosage markings.

Ready Cal High-Calorie Supplement For Cats

$21.99

Recommended

Cat food topper, labeled 'Ready Cal,' high-calorie savory chicken powder.

Ready Cal High Calorie Powder for Cats

$24.99

FREE Shipping included.

Product Details

Ready Cal is an easy to use high calorie nutritional supplement that helps to provide the essential calories your cat needs daily to gain or maintain a healthy weight. 

When our cats do not feel up to eating, it can cause low energy, depressed mood, and weight loss, which can quickly lead to malnutrition and further health issues.


This supplement helps to provide essential calories for cats that are not eating enough to maintain a healthy weight. Ideal for cats in their 'golden years' where maintaining weight is critical for slowing down the aging process.


Made in the USA with ten vitamins, seven minerals, and essential fatty acids, our vet formulated gel is designed for cats and kittens of all ages who may not be eating normally due to reasons such as stress, age, medical procedures, or illness.


Comes in a dial-a-dose tube for accurate dosing, with a natural fish taste cats love. Manufactured without artificial flavors or dyes.

  • Veterinarian Formulated

    Every product we manufacture has been developed in close collaboration with verterinarians - that means they’re safe, and they work!

  • Manufactured in the USA

    All of our products are manufactured right here in Vermont, USA, always using the highest quality ingredients.

  • Fast Shipping

    Your hands are already full taking care of your furry friend. Save the trips to the store with our fast shipping!

 

Over 250,000 pets helped

What Customers Are Saying

Health

Improvements

Convenient and

Reliable Solutions

Picky Eater

Approval

Excellent

Customer Service

A black dog with a blue collar sits beside a packet of dog food and a bowl.

muddypawsrescuenyc When he first arrived, he was in a bit of rough shape. He was found as a stray, so no one knows exactly what his past was like. All we know is that his future is as bright as his smile! After a few bags of @undertheweatherpet Chicken and Rice (which he gobbled up too fast for us to catch a good photo, yum!), and continuing medication for his stiff joints, Tavo is perking up and has blossomed into the most perfect gentleman.

A pit bull rests its head and paw on a cozy, patterned blanket.

Aimee L.

Amazing results fast! Our Pitty was having a flare up and I decided to try this. He is now holding his leg up sturdy to pee again and has more energy it seems. I can definitely tell this product works! Definitely worth the money! Thank you!

Golden Retriever looking at Under the Weather Rice & Chicken dog food packet.

olivemygolden The greatest product ever invented (especially if you have a golden that will eat anything ). I always keep some on hand & they always get used up @undertheweatherpet

A tabby cat sitting beside various cat health supplements.

Dawn P.

We love it!

Finally found a powder for my picky eaters! My cats don't like seafood flavored anything. It was a great relief to find this product. They happily eat it mixed with their wet food.

Husky with different colored eyes sits on the floor with pet food and supplements.

Instagram User Thank you @undertheweatherpet for all the wonderful products! Being a foster/rescue mom 🐾 and having rescued an anxious and picky husky 🐶, I can really appreciate your products!


We have freeze dried bland diet for dogs (a quick food replacement when I’m in a pinch - and SUPER healthy for your dog), hemp calming treats for prone to stress pups, and (I know we don’t want to talk about it, but so needed!) anti-diarrhea to help firm up those loose poops 💩!


Skye definitely is an Under the Weather Pup!

Spotted dog lying on a dark grey ottoman in a modern living room.

Gretchen G.

No longer ‘Under the Weather!’ Our 15 year cocker, Peanut, has multiple issues and most foods make her so sick and unhappy. But now she is dancing for dinner again. Also, she gets happy when she sees the kettle boiling as she knows what’s coming! Thank you for making such a good product for fur babies.

A black dog with a blue collar sits beside a packet of dog food and a bowl.

muddypawsrescuenyc When he first arrived, he was in a bit of rough shape. He was found as a stray, so no one knows exactly what his past was like. All we know is that his future is as bright as his smile! After a few bags of @undertheweatherpet Chicken and Rice (which he gobbled up too fast for us to catch a good photo, yum!), and continuing medication for his stiff joints, Tavo is perking up and has blossomed into the most perfect gentleman.

A pit bull rests its head and paw on a cozy, patterned blanket.

Aimee L.

Amazing results fast! Our Pitty was having a flare up and I decided to try this. He is now holding his leg up sturdy to pee again and has more energy it seems. I can definitely tell this product works! Definitely worth the money! Thank you!

Golden Retriever looking at Under the Weather Rice & Chicken dog food packet.

olivemygolden The greatest product ever invented (especially if you have a golden that will eat anything ). I always keep some on hand & they always get used up @undertheweatherpet

A tabby cat sitting beside various cat health supplements.

Dawn P.

We love it!

Finally found a powder for my picky eaters! My cats don't like seafood flavored anything. It was a great relief to find this product. They happily eat it mixed with their wet food.

Husky with different colored eyes sits on the floor with pet food and supplements.

Instagram User Thank you @undertheweatherpet for all the wonderful products! Being a foster/rescue mom 🐾 and having rescued an anxious and picky husky 🐶, I can really appreciate your products!


We have freeze dried bland diet for dogs (a quick food replacement when I’m in a pinch - and SUPER healthy for your dog), hemp calming treats for prone to stress pups, and (I know we don’t want to talk about it, but so needed!) anti-diarrhea to help firm up those loose poops 💩!


Skye definitely is an Under the Weather Pup!

Spotted dog lying on a dark grey ottoman in a modern living room.

Gretchen G.

No longer ‘Under the Weather!’ Our 15 year cocker, Peanut, has multiple issues and most foods make her so sick and unhappy. But now she is dancing for dinner again. Also, she gets happy when she sees the kettle boiling as she knows what’s coming! Thank you for making such a good product for fur babies.

Overall rating: 4.3469386 / 5 from 196 reviews.

AI Generated Review Summary

Ready Cal® High-Calorie Supplement for Cats is a product designed to help cats maintain optimal weight and energy levels, especially as they age. It is praised for its effectiveness in improving feline health and overall well-being. Customers have mixed opinions on its taste, syringe, and the amount, but it is generally considered helpful for fussy eaters and weight management.

Summary topics

  • Eating Behavior (6%): In general, customers found that this cat supplement helped their fussy eaters gain a bit of weight.
  • Weight Management (14%): Customers have mixed opinions about the weight of the product, with some experiencing significant weight loss and weight gain.
  • Cat Health Improvement (32%): In general, customers found that this product helped improve their cats' health and overall well-being.
  • Taste Acceptance (12%): Customers expressed differing viewpoints regarding the taste, with some loving it and others finding it unpleasant.
  • Supplement Effectiveness (12%): Customers keep praising the high calorie supplement for cats, with multiple reviews mentioning how much their cats love it.

Review topics: [].

Review highlights

  • "My 17 year old cat really loved Ready Cal High-Calorie Supplement!"Melodie S.
  • "I still feed this to her occasionally, but she is now fully eating cat food without issues."Valerie S.
  • "She likes the flavor, no issue licking it straight off my finger."Harmonie

Reviews

"This is a great product to help increase caloric intake for our senior cat. He likes the taste and it is helping his appetite."

Michelle (5/5)

No go

"Cats turn their noses up at it. Might have necessary nutrients but nothing more than a waste of money if they won't eat it"

Joni L. (2/5)

Cat not interested

"I mixed a dose with my cat’s food and she turned her nose away,"

Christine W. (1/5)

"My cat will not eat this, even if mixed with his favorite treat or food."

Judy (1/5)

Bad taste

"None of my cats will touch it and I have a few."

Heidi W. (1/5)

"This is a great product! My senior cat is definitely been feeling better since we've been using this."

Michelle (5/5)

Good Product

"My cat actually eats it, she never takes supplements without prompting; it has helped her and I thank you!"

Barbara L. (5/5)

Texture

"The texture is messing with them. They want to eat it, but don’t want a big glob of it in their mouth. I mix it with another paste that they love eating but don’t provide what this paste does. I either do that or put it on the inside of a front leg so they’ll have no choice but to eat it."

Christie L. (3/5)

Still skinny

"She refuses her food if I mix it in"

Peggy L. (3/5)

Vitamin packed

"Been giving this to my baby for years now, off and on. Just to give her some extra suppliments and weight gain. She loves it."

Robin W. (5/5)

Q&A

I have a diabetic cat and see this contains molasses and corn syrup. Could this be used to treat hypoglycemia and what is the sugar/glucose amount per cc?
Absolutely. Each Teaspoon (5 grams) provides about 3,200 mg of readability available sugar in the form of Corn Syrup, Malt Syrup and Molasses. This will help boost the sugar levels in the blood. In addition it also provides B vitamins which helps as a co-factor in energy metabolism. Please be sure to see your vet before starting any supplement as every cat's health is different.
My cat is 17 years old and drinks but will not eat. I've tried to get her to eat the feed from your tube but administering it is problematic. I placed some on he paw as directed but she didn't even lick it. Is there any product you carry such as pills or eye drop administered product for infection or appetite enhancement? She will drink some of the water from canned tuna, Perhaps I could more easily feed her with an eye dropper. Do you carry them?
We do not carry a product that is administered by an eyedropper at this time. You could try mixing the gel with warm water and then giving it in a dropper.
Could this product make my kitten slobber
It is definitely a tasty product but we haven’t heard this one before! If the slobbering is frequent we suggest calling your vet just to make sure things are normal.
Is this suitable for a kitty with CKD?
This is great for cats with many different health issues, including CKD, however every cats health is different so we suggest you speak with your vet before starting!
My cat has a thyroid problem, takes med, now needs meds to protect his liver and spleen. Lost a lot of weight will this have a effect on his other meds? He is 16 and weighs 6 1/2 pounds.
While many cats benefit from Ready Cal, including those with thyroid issues, however every cats health is different so we suggest you speak with your vet about how it will interact with your cats medication.

Meet Some Of Our Happy Pets