Ready Cal® High Calorie Powder for Cats

Ready Cal® High Calorie Powder for Cats

PROVIDES ESSENTIAL CALORIES
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Ready Cal Topper for Cats is a nutrient dense, high calorie powder supplement that helps provide the essential calories a cat needs to gain or maintain a healthy weight. 20 scoops per jar - scoop included.
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Product information

Promotes Healthy Weight Gain: Specially formulated to provide quick and essential calories, helping prevent further weight loss and supporting healthy weight gain in cats with poor appetites due to stress, age, illness, or other factors.

Boosts Energy and Recovery: Packed with 8 essential vitamins and 6 minerals, this formula restores health, strengthens the immune system, and boosts energy for underweight or recovering cats in need of a nutritional boost.

Delicious and Easy to Use: Perfect for finicky, sick cats, this highly palatable powder can be sprinkled over food or mixed with warm water to create a savory gravy—making it irresistibly delicious and simple to serve.

Perfect for All Cats: Suitable for kittens, senior cats, and felines of all breeds and sizes who need extra calories and nutritional support.

Vet-Strength Care: Developed with care (and love) by veterinarians, this Ready Cal Powder is safe, effective, and made in the USA with only the highest-quality ingredients.

Ingredients

Guaranteed Analysis per 5 gram scoop:

Crude Protein (min)............... 6.00%

Crude Fat (min).................... 22.00%

Crude Fiber (max).................... 1.00%

Moisture (max)......................... 4.00%

Calcium (min) ................... 60.00 mg

Phosphorus........................ 0.03 mg 

Sodium................................. 15.00 mg

Iron......................................... 0.50 mg

Manganese............................ 0.50 mg

Zinc..................................... 0.50 mg

Vitamin A............................ 500.00 IU

Vitamin D3.............................50.00 IU

Vitamin E................................ 6.00 IU

Thiamine (Vitamin B1)........ 2.00 mg

Riboflavin (Vitamin B2)....... 1.00 mg

d-Pantothenic Acid.............. 1.00 mg

Pyridoxine (Vitamin B6)..... 0.80 mg

Folic Acid............................... 0.50 mg

Vitamin B12........................... 2.00 mg

Choline ................................ 10.0 mg 


Calorie Content (Calculated, ME) 

ME 3855 kcal/Kg 20 kcal/scoop 


Inactive Ingredients:

Chicken Meal, Coconut Powder, Dried Cane Molasses, Maltodextrin, Dicalcium Phosphate, Potassium Chloride, Silicon Dioxide, Salt, Choline Bitartrate, Vitamin A Acetate, Vitamin D3, Vitamin E, Manganese Proteinate, Zinc Proteinate, Thiamine Hydrochloride, d-Calcium Pantothenate, Pyridoxine Hydrochloride, Riboflavin Supplement, Folic Acid, Vitamin B12 Supplement. 

Directions

1 to 2 scoops per day. 

Scoop included. 

Shipping and return details

All orders above $30 are eligible for free shipping.
Please note that we only ship to addresses in the lower 48 of United States. We do not ship internationally or to AK/HI at this time.

Expedited Shipping (arrives in 2-3 business days)
Flat rate of $19.99 USD. Orders placed before 3pm EST Monday - Friday (non holidays) ship the same day. In-stock items are normally shipped within 1-2 business days. Expedited and overnight shipping options are not available to Hawaii, Alaska and PO Boxes. We do not ship on holidays. Expedited orders placed on Friday after 12pm EST will be delivered Wednesday (2 business days).

Hastle-free Returns
We are happy to accept returns of unopened, unexpired products purchased directly from our website within 30 days of purchase. Please note, we DO NOT accept returns of opened or expired products. We also do not accept returns of items purchased from Amazon or other retailers.

Please send your returns using the carrier of your choice to:

Under the Weather Pet (ATTN: Returns)
1360 Marshall Avenue Williston, VT 05495

Please ensure to include your name and order number.

Once your return has been processed, it may take 3 - 10 days for the refund to be posted to your account. The customer is responsible for the return shipping fee.
View full details

  • 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 and free shipping!
 

There are many reasons a cat may not be eating, including pain, stress, age, illness, and more. Inadequate caloric intake causes weight loss which can lead to malnutrition, weakening the immune system, and compromising overall health. This is why it’s essential, and at times even critical to quickly provide your cat with calories to prevent further weight loss and promote weight gain. Ready Cal Food Topper is a one-of-a-kind supplement developed to quickly provide calories and nutritional support when a cat is losing weight.

  • Why is Chicken fat the #1 ingredient? Because it smells great, and tastes even better! Enticing your cat to eat to quickly boost calories 
  • A highly palatable, easy to use powder formula! Sprinkle on top of food, or mix with warm water to create a delicious gravy (like the kind Grandma makes!)
  • Contains 9 vitamins and 6 minerals to aid in restoring overall health
  • Stimulates appetite and boosts energy
  • Made with a savory rotisserie chicken flavor that cats love
  • Vet formulated and manufactured in Vermont, free of artificial flavors and dyes.
Table of Contents

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: 4.709677 / 5 from 31 reviews.

AI Generated Review Summary

Ready Cal High Calorie Powder for Cats is a supplement designed to provide quick calories and nutritional support to cats losing weight. It contains chicken fat as the primary ingredient, which is highly palatable and helps stimulate appetite. The product includes essential vitamins and minerals to aid in restoring overall health.

Summary topics

  • Weight Management (19%): The feedback is varied, some cats have gained weight while others have lost weight and are still losing weight.

Review topics: [].

Review highlights

  • "My cat is finally getting well and is eating his dry food when I sprinkle the powder on it." — Mariana M.
  • "I really do think it is helping put weight back on him." — Martine F.
  • "This has literally saved my cat's life." — Kelli G.

Reviews

Highly addictive

"My pickiest cat turned 11 this year. She'd been losing weight slowly over the past year. I got this powder to put some weight back on her w out changing her diet. She has spent a lifetime snubbing MANY kinds of food & even treats. When I opened the lid on this powder, she smelled it & IMMEDIATELY wanted it. I mixed it in a patè w gravy. She gobbled it all & immediately began screaming for more. I have to hide the can of powder or she sits & stares at it. I have even mixed it in little cat soups that didn't have enough volume to fully absorb the powder. This cat, who turns her nose up @MANY things, will eat the clumpiest pile of food w this in it. And I may be imagining it, but she felt a bit less bony after just one dose. HIGHLY recommended!!!"

— Daisy D. (5/5)

"This presentation is my favorite"

— Diego (5/5)

"My cat wouldnt eat it"

— Margaret (1/5)

Great help for elderly cat

"This product has really helped my 18 year old cat gain back weight and resume a better quality of life."

— Linda F. (5/5)

Vet-recommended!!

"I came across this product while searching for things to try to put weight on my senior cat. I am a veterinarian & my cat did not like the prescription critical care/ high cal diets on the market. Of course we ruled out the "usual suspects" of weight loss in my cat first like renal disease, diabetes, & hyperthyroidism. Once I knew we weren't battling an issue like that, I was looking for ways to increase his calories. This product has made a huge difference for him. I mix one scoop (20 calories) into some canned food (pate) twice a day & he loves it. It is wonderful to have a product that my cat enjoys eating. I can't wait to share this product with my clients! Highly recommend!"

— Charlene D. (5/5)

Wonderful product

"Our cat is 17 years old and she is still active by I have noticed she has become a very picky eater. This product is so wonderful. I sprinkle it on her food and she eats it. I put in water and make a soup and she slurped it right up."

— teresa r. (5/5)

I was hopeful. .

"My kitty would not touch his food with this in it. I really wanted this for him too as he has intestinal lymphoma and would have benefited from this."

— Karen C. (3/5)

No more saggy booty!

"Our Bengal kitty is 16 now and he had a little sag in his booty that made him look his age. We use this product to give him some extra calories so he would have a little bit more meat on his bones and he looks great! I think it gives him a bit more energy and better quality of life."

— Rosina M. (5/5)

Great stuff

"I put this in my cat wet food and he eats it up. I really do think it is helping put weight back on him."

— Martine F. (5/5)

Seemed like a good product. . . . . .

"I was hopeful that your product would be what we needed for our little Mischief. Mischief's is only 3, and has always been a slight cat. Her shots and well-kitty checks are on time. The vet tells me she is "healthy" she's "Just a small cat" (not even 6 lbs) I was looking for something that would help her gain some weight and make her coat look thicker and shinier. She ate her 1st dose well, but since then, she won't TOUCH it! Alas, we will have to try again. , Thank you for being there for us. If I am in need of any other healthy pet products, I'll come to you! Thank you for having a website for those ofr us with special-needs pets. Tonya & Mischief"

— Tonya C. (5/5)

Q&A

Is this safe for cats with kidney failure?
Ready Cal helps cats with many different health issues including kidney problems, however, every cat's health is different so suggest you speak with your vet before starting this supplement.
Is this safe for a 14 year old cat who was recently diagnosed with kidney failure. Dr says her kidneys aren't too bad yet.
Hi - This product has helped many cats including those with kidney issues, however, every cat's health is different so we suggest you speak with your vet before starting this supplement.
What is the dry matter basis percentage of phosphorus in this product?
An average daily dose of Ready Cal contains 0.127mg of Phosphorus. This is a very low level.
what is the % carbohydrate content?
We are about half healthy carbohydrates and also use healthy fats and minerals as energy sources as well
I can't get my car to eat this no matter how it's presented. I've tried sprinkling smaller and smaller amounts in her food to try and add more calories to her purees and I tried making a gravy as suggested on the jar. She isn't interested in anything that has this on it and she really need the calories. Is there anything I can hide it in that will disguise the vitamin smell? I think that's what is throwing her off. Thank you
This product is simply healthy fats and sugars. There should not be any vitamin smell. Some cats are just very finicky especially when they don’t feel well. Are there any canned foods or treats that she likes? Have you tried warming up her canned food to increase the aromas? Does she like tunafish? Or canned salmon? Warming up their food definitely helps with palatability. Try starting very light and warming up her favorite food to mix it with might help. We hope this works!

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