Under the Weather Ready Cal High Calorie Food Nutritional Gel Cat Supplement, slide 1 of 1

Under the Weather Ready Cal High Calorie Food Nutritional Gel Cat Supplement, 80-cc syringe

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Make sure your feline friend is getting all her calories for the day with Under the Weather Ready Cal High Calorie Food Nutritional Gel Cat Supplement. Made in the USA with nine vitamins, seven minerals and essential fatty acids, this gel formula is designed for kitties who aren’t eating normally because of medical procedures or anxiety and stress. When used as directed, this supplement helps provide your furry friend with the nutrients and calories she needs. Ready Cal comes in a dial-a-dose tube to help ensure accurate dosing and your furry friend will love the palatable natural fish and malt taste!

Key Benefits
  • Gets your paw-tner the required calories and nutrients she needs when she isn’t eating her regular diet.
  • Crafted with 9 vitamins, 7 minerals, plus essential fatty acids.
  • Finished with natural fish and malt flavors.
  • Packaged in a dial-a-dose tube for accurate dosing.
  • Made in the USA.

For animal use only. Intended for intermittent or supplemental feeding only.

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  • Item Number
  • Weight
    2.72 ounces
  • Lifestage
  • Food Form
  • Product Form
Nutritional Info

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.

Caloric Content

4760 kcal/kg, 28 kcal/teaspoon (6 cc)

Guaranteed Analysis
Crude Protein0.6% min
Crude Fat18.5% min
Crude Fiber3% max
Moisture16% max
Calcium0.70 mg
Omega 6 Fatty Acids135 mg
Phosphorus0.03 mg
Potassium0.16 mg
Vitamin D60 IU
Vitamin A1025 IU
Vitamin D 60 IU
Feeding Instructions

To acquaint your cat with the flavor, place a small amount on its nose or in the mouth. To supplement your cat's caloric or nutritional intake: 1/4 tsp (1.5 cc) per 10 lbs of body weight daily. When your dog is not eating its full recommended daily ration: 1/2 tsp (3 cc) per 10 lbs of body weight daily.


Why should I include vitamins & supplements in my pet’s diet?

Most commercial pet foods include baseline vitamins and nutrients, but some may not have the adequate amount to suit your pet’s exact health needs. Like in humans, vitamins and supplements can help support your pet’s long-term health, regulating everything from digestion to muscle growth. Consult your veterinarian to determine the best vitamins and supplements for your furry friend.

How often should I give this supplement to my pet?

It is recommended to give the suggested dosage based off your pet’s weight. Please refer to the Feeding Instructions tab and consult with your veterinarian for more information.

Is this supplement safe to use with the medication my pet is currently taking?

If your pet has a medical condition and is taking other medication, we recommend consulting with your veterinarian to ensure that this supplement is safe to use.

My pet is allergic to certain ingredients, will this product be safe to use?

For a complete list of ingredients, click on the 'Nutritional Info' tab, next to the 'Description' tab, just under the product photos. If you are unsure about the safety of this product for your pet, we recommend consulting with your veterinarian.

Does this product come in other product forms?

For a complete assortment of products by the manufacturer of this supplement, click on the link next to the item name at the top of the page. You can also find an assortment of supplements across all product forms on our page.

Simple Feline Health Solutions

When your kitty needs a little extra support, turn to Under the Weather to keep her feeling her best. Their functional chews and gel supplements are designed to help address specific health issues cats may face, to foster everyday wellness and promote overall well-being.

Simple Feline Health Solutions
Formulated to Help Cats Thrive

Formulated to Help Cats Thrive

Vet-formulated Under the Weather chews contain different special ingredient blends to help with five common feline health concerns. Choose from Urinary, Hairball and Calming formulas, or try Probiotic for digestive support and L-Lysine for healthy immunity. 

Made with Trusted Ingredients

Under the Weather makes its chews in Vermont, using veterinarian-formulated recipes with no corn, artificial flavors or dyes. These functional chews have a whisker-licking whitefish flavor your cat will love and natural ingredients you can feel good about, too!

Made with Trusted Ingredients
High-Calorie Supplements

High-Calorie Supplements

If your cat is losing weight or not eating well, try Under the Weather’s Ready Cal high-calorie gel nutritional supplement. Ready Cal provides extra calories and essential vitamins and minerals to help your kitty feel better and gain or keep on weight. Feed it directly or mix it into food—it has a taste cats love and the nutrients they need for extra energy.

Loose Stool Relief

When stress and other factors upset your furry friend’s digestive balance, you need to act fast. Ready Balance oral probiotic gel gets to work quickly to help restore that delicate balance and promote welcomed relief from worrying symptoms like vomiting and diarrhea.

Loose Stool Relief

About Under the Weather

Under the Weather was founded with the mission of helping pets live happier and healthier lives. They make supplements and dietary products for pets, to help busy pet parents meet the health challenges their trusted companions face. A portion of every sale supports their charitable effort Ruffy Rescue, founded in 2017 to help save the lives of dogs in high-kill shelters. Ruffy Rescue helps provide transport and spay and neuter funding for thousands of shelter dogs, so they can find the loving homes they deserve.

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About Under the Weather

Rating: 3.5 of 5 stars 17 Reviews 17 Reviews 3.6 out of 5 Stars

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88% Recommend

88% of reviewersrecommend this product

Rating: 3.5 of 5 stars 3.6 / 5

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17 Reviews

Showing 1-10 of 17 Reviews

  • 3 out of 5 stars

    helpful in the right circumstances

    By Barb1994 on May 2, 2021

    It has a lot of promise. I bought it for my kitty who was losing weight due to fip. Unfortunately, we lost him not long after I purchased it. I donated the rest to a a local rescue.

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  • 3 out of 5 stars

    Cat won’t eat it :(

    By MichaelKitten on Jan 28, 2021

    This has the consistency and look of the hairball remedies you buy in a tube. Unfortunately, my cat hates those and will not eat this either. I tried just slathering it on his paw but it backfired and it got all over my carpet as he tried to wipe it off. 3 stars because I hear it works well, unfortunately my cat refuses to have some.

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  • 5 out of 5 stars

    A product that does what it claims

    By GoodProduct on Jan 14, 2021

    One of our older cats has tender gums and was not eating and was losing weight after using this supplement by applying the dose to his paw about 2 hours before meal time now he can't wait for his meal. He is now healthier and gaining his spunk and his weight,he has been on it now about 3 months.

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  • 5 out of 5 stars

    Cat loves it

    By CJNV on Dec 23, 2020

    My cat really likes this and will eat it. He'll only lick it from my hand or the tube, never from a dish. This is a cat who won't willingly eat any of the hairball stuff or other flavored supplements I've tried. He's older and pretty skinny and an incredibly picky eater so I want to get some extra calories in him and I think this helps. It's a little messy, have to give him a tiny bit at a time.

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  • 5 out of 5 stars

    Good stuff

    By Hummingbird on Jan 1, 2021

    My cat is very old and has a very sensitive stomach. It has been a challenge to try to maintain his nutritional needs. Watching him loose weight has been heart wrenching. So I decided to try this and it's helped. I mix it in his food. He has not thrown it up. Yeah! His weight loss has stabilized and his coat is back to being shiny.

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  • 5 out of 5 stars

    Old guy loves the taste!

    By JulieC on Jan 4, 2021

    My 18 year old orange tabby loves the taste of Under the weather ready cal. He practically begs me for it when he sees the syringe come out of the pantry. I am so thankful for this product as it has brought new life back into him.

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  • 3 out of 5 stars

    I didn’t really get a chance to use it.

    By Boots on Oct 27, 2020

    I didn’t get a chance to really use it. Maybe 1 squeeze. My cat passed away about a week after I got it. I have all of it left except for one squeeze. There was a lot of product for the cost and it will last a long time.

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  • 5 out of 5 stars

    Outstanding product

    By Roscoe on Oct 9, 2020

    I have an elderly cat that had basically stopped eating, I purchased the Under the Weather gel and gave it to him and the next day he was eating like crazy. I give it to him every other day now and he is eating more than he used to which is wonderful because he had some weight loss.

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  • 3 out of 5 stars

    Needs better packaging

    By Rain on May 31, 2020

    When you try to push the syringe all the oil comes flying out, I did it slowly since someone mentioned this. But then at bottom of syringe I saw thick paste like hairball remedy. Couldnt mix it by shaking, I squirted it all out into a bowl. It was thick with a lot of oil, it never would have mixed in the syringe, all the oil would come out first. It was a mess, mixed it together, cat hated it. BUT I put it on his feet and he licked it off and he is now eating again!! So it does work but it was a lot of trouble. Just don't try to use it from the syringe!

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  • 5 out of 5 stars

    Hazel loves this!

    By Collar on May 19, 2020

    My 2-year old black kitten has chronic gut problems. She is under the care of a great veterinarian, but I also had to think of ways to entice her to take in some calories, this item works great! Just be careful not to push on the plunger too hard, the product comes out quickly!

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