--- product_id: 719287315 title: "Pet | Ready Cal for Cats 100cc | High Calorie Supplement | Cat Weight Gainer and High Calorie Booster | 10 Vitamins, 7 Minerals & Omega Fatty Acids (for Cats 100cc)" brand: "under the weather" price: "€ 85.64" currency: EUR in_stock: true reviews_count: 5 category: "Under The Weather" url: https://www.desertcart.gr/products/719287315-pet-ready-cal-for-cats-100cc-high-calorie-supplement-cat store_origin: GR region: Greece --- # Packed with 10 vitamins & 7 minerals Convenient dial-a-dose gel tube Boosts cat weight effectively Pet | Ready Cal for Cats 100cc | High Calorie Supplement | Cat Weight Gainer and High Calorie Booster | 10 Vitamins, 7 Minerals & Omega Fatty Acids (for Cats 100cc) **Brand:** under the weather **Price:** € 85.64 **Availability:** ✅ In Stock ## Summary > 🐾 Fuel your feline’s comeback with every squeeze! ## Quick Answers - **What is this?** Pet | Ready Cal for Cats 100cc | High Calorie Supplement | Cat Weight Gainer and High Calorie Booster | 10 Vitamins, 7 Minerals & Omega Fatty Acids (for Cats 100cc) by under the weather - **How much does it cost?** € 85.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.gr](https://www.desertcart.gr/products/719287315-pet-ready-cal-for-cats-100cc-high-calorie-supplement-cat) ## Best For - under the weather enthusiasts ## Why This Product - Trusted under the weather brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Appetite Revival:** Stimulates appetite in sick or recovering cats to keep them thriving. - • **Effortless Dosing:** Dial-a-dose tube ensures precise, mess-free supplementation every time. - • **Power-Packed Nutrition:** 10 essential vitamins, 7 minerals & omega fatty acids fuel your cat’s comeback. - • **Made in the USA, All Natural:** No artificial flavors or dyes—only premium, safe ingredients your cat deserves. - • **Clinically Trusted Weight Gain:** Veterinary-formulated to help cats regain healthy weight fast. ## Overview Under The Weather Ready Cal for Cats is a veterinary-formulated, high-calorie gel supplement designed to promote healthy weight gain and boost appetite in cats. Enriched with 10 vitamins, 7 minerals, and omega fatty acids, it supports energy and recovery in sick or undernourished cats. Packaged in a convenient dial-a-dose tube, this all-natural, USA-made formula ensures precise dosing and palatable flavor cats love. ## Description Under The Weather Pet | Ready Cal for Cats 100cc | High Calorie Supplement | Cat Weight Gainer and High Calorie Booster | 10 Vitamins, 7 Minerals & Omega Fatty Acids (for Cats 100cc) Review: SAVES LIVES on our farm where we frequently rescue sick kittens - Because of our rural location people frequently dump cats near us where often the pregnant momma kitties make their way to our farm to have their kittens. Because of our unique setup with an auto feeder loaded with premium kitty food, the momma cats usually move their kittens to our enclosed catio when it's time to teach their babies to eat solid food thereby making it easier to catch and tame their Littles. Often there's one or more runts or sick kittens in most litters so we keep a fresh unopened tube of this Under the Weather on hand especially during Kitten Season. We've found almost every kitten has found this tasty treat absolutely delightful - after a small dab on the lips, they then willingly lick or nibble off a small squeeze until their tummies are full. By the 2nd or 3rd time they've had Under the Weather they regard us as safe creatures and no longer run allowing us to readily pick them up, they actually seem to look forward to getting this nutrient booster as a well deserved treat. If there's a really sick kitten we put a small amount of this Under the Weather and extra vitamin B1 thiamine in a bit of red cap whole milk, syringe feeding if they're too weak to drink themselves. If they have a bit of gunky eye we also add a dab of l-lysine powder. When they're 4 weeks of age we also treat with Baycox ie toltrazuril 10% then we repeat the toltrazuril 10 days later, especially if they've had diarrhea at all. Using this as our farm kitty rescue "protocol" we now save nearly 100% of the kittens who we can get our hands on. We re-home as many as possible, the rest are fixed and remain in our farm cat colony. We've been using Under The Weather for several years now - EVERY tube has been top quality and has definitely been vital in our effort to save lives; even kittens our vet was convinced no way would survive let alone thrive are now healthy active stout 12-15 pound farm cats. We have one cat who initially was a sick baby no one thought he'd survive, he was doing great until a farm accident, now as a tripod he's once again a strong agile kitty who readily scales trees and hay bales with only 3 legs. Everyone is amazed at his mobility and his vibrant health - again, Under the Weather definitively made the difference in his life, both as a kitten and as an adult recovering from a nasty infection developed within his deep lacerations prior to him literally dragging himself home for amputation surgery. ALL rescues, rehabs and farms should keep Under the Weather on hand to use for the sick or weak furballs. I'd give far more than 5 stars if possible, cannot recommend enough! Review: It really works. My cat was worth - This stuff is amazing. My cat was on his way out and now he's out walking around purring and looking great. The second tube did the trick. Lucky is the cats name and he's twenty five years old. ## Features - Helps Cat Gain Weight - Filled with healthy ingredients to help your cat gain weight if they aren't eating properly. Shelf life: 24 months from manufacturing date. EXP date printed beside the barcode as EXP MM/YY. - Stimulates Appetite - When your cat isn't getting proper nutrition due to reasons such as illness or medical procedures, this nutritional supplement gel will help restore your kitty's appetite to keep them healthy and strong. - Energy Booster - Vitamins, minerals, carbohydrates, and omega fatty acids are essential nutrients to boost your cats weight, appetite and energy. - Easy to Use - This gel supplement for your cat comes in a convenient dial-a-dose tube to ensure that you’re able to give your kitty the proper dosage it requires. - The Best For Your Cat - Ready Cal for Cats is veterinary-formulated with tasty flavor cats love to promote weight gain. Proudly manufactured in the USA without artificial flavors or dyes. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07FN5MLTY | | Active Ingredients | Malt syrup, Soybean oil, Corn syrup, Cane molasses, Salmon oil, dl-Alpha tocopherol acetate (vitamin E), Potassium sorbate (preservative), Manganese proteinate, Magnesium sulfate, Calcium pantothenate, Niacinamide, Iron proteinate, Pyridoxine hydrochloride, Vitamin A acetate, Thiamine Mononitrate, Mixed tocopherols (preservative), Sodium chloride, Trisodium phosphate, Riboflavin, Potassium iodide, Choline bitartrate, d-Activated animal sterol (vitamin D3 supplement), Folic acid, Vitamin B12 supplement Active Ingredients Malt syrup, Soybean oil, Corn syrup, Cane molasses, Salmon oil, dl-Alpha tocopherol acetate (vitamin E), Potassium sorbate (preservative), Manganese proteinate, Magnesium sulfate, Calcium pantothenate, Niacinamide, Iron proteinate, Pyridoxine hydrochloride, Vitamin A acetate, Thiamine Mononitrate, Mixed tocopherols (preservative), Sodium chloride, Trisodium phosphate, Riboflavin, Potassium iodide, Choline bitartrate, d-Activated animal sterol (vitamin D3 supplement), Folic acid, Vitamin B12 supplement See more | | Allergen Information | Allergen-Free | | Best Sellers Rank | #21,275 in Pet Supplies ( See Top 100 in Pet Supplies ) #512 in Cat Health Supplies | | Brand | Under the Weather | | Brand Name | Under the Weather | | Customer Reviews | 4.0 out of 5 stars 5,246 Reviews | | Flavor | For Cats 100cc | | Flavour | For Cats 100cc | | Included Components | Product | | Item Form | Gel | | Item Type Name | Under The Weather Pet | Ready Cal for Cats 100cc | High Calorie Supplement | Cat Weight Gainer and High Calorie Booster | 10 Vitamins, 7 Minerals & Omega Fatty Acids (for Cats 100cc) | | Item Weight | 3.5 Ounces | | Item form | Gel | | Item weight | 3.5 Ounces | | Manufacturer | Under the Weather | | Manufacturer Part Number | 01C0067.100 | | Model Number | Cat Supplements 7 | | Product Benefits | Weight Gain | | Product benefits | Weight Gain | | Specific Uses For Product | Stomach | | Target Species | Cat | | UPC | 852303008265 | | Unit Count | 1.00 Count | | Volume | 3.38 Fluid Ounces | ## Product Details - **Brand:** Under the Weather - **Flavour:** For Cats 100cc - **Item form:** Gel - **Item weight:** 3.5 Ounces ## Images ![Pet | Ready Cal for Cats 100cc | High Calorie Supplement | Cat Weight Gainer and High Calorie Booster | 10 Vitamins, 7 Minerals & Omega Fatty Acids (for Cats 100cc) - Image 1](https://m.media-amazon.com/images/I/81KQLt5wd-L.jpg) ## Questions & Answers **Q: How many calories are there in a teaspoon of Ready Cal?** A: There are 28 calories per teaspoon. **Q: Once opened does the Ready Cal need to go into the fridge?** A: No, it is still shelf stable as long as the cap is put back on! This product has a shelf life of 2 years from date of manufacture. **Q: Where is this made?** A: Under the Weather is headquartered in Vermont, USA. Ready Cal is manufactured in the USA using ingredients from trusted sources around the country and world. **Q: Can this be added to my pet's food?** A: Yes - We encourage you to serve in whatever way is most convenient for you and your pet. **Q: What should I do if my pet doesn't like the flavor?** A: We recommend you try placing the Ready Cal on the top of your pet's paw or nose. Most pets will instinctively lick it off. If not, try mixing it with a bit of warm water and adding to their daily food. You might also try putting it on a treat! ## Customer Reviews ### ⭐⭐⭐⭐⭐ SAVES LIVES on our farm where we frequently rescue sick kittens *by J***L on 9 August 2025* Because of our rural location people frequently dump cats near us where often the pregnant momma kitties make their way to our farm to have their kittens. Because of our unique setup with an auto feeder loaded with premium kitty food, the momma cats usually move their kittens to our enclosed catio when it's time to teach their babies to eat solid food thereby making it easier to catch and tame their Littles. Often there's one or more runts or sick kittens in most litters so we keep a fresh unopened tube of this Under the Weather on hand especially during Kitten Season. We've found almost every kitten has found this tasty treat absolutely delightful - after a small dab on the lips, they then willingly lick or nibble off a small squeeze until their tummies are full. By the 2nd or 3rd time they've had Under the Weather they regard us as safe creatures and no longer run allowing us to readily pick them up, they actually seem to look forward to getting this nutrient booster as a well deserved treat. If there's a really sick kitten we put a small amount of this Under the Weather and extra vitamin B1 thiamine in a bit of red cap whole milk, syringe feeding if they're too weak to drink themselves. If they have a bit of gunky eye we also add a dab of l-lysine powder. When they're 4 weeks of age we also treat with Baycox ie toltrazuril 10% then we repeat the toltrazuril 10 days later, especially if they've had diarrhea at all. Using this as our farm kitty rescue "protocol" we now save nearly 100% of the kittens who we can get our hands on. We re-home as many as possible, the rest are fixed and remain in our farm cat colony. We've been using Under The Weather for several years now - EVERY tube has been top quality and has definitely been vital in our effort to save lives; even kittens our vet was convinced no way would survive let alone thrive are now healthy active stout 12-15 pound farm cats. We have one cat who initially was a sick baby no one thought he'd survive, he was doing great until a farm accident, now as a tripod he's once again a strong agile kitty who readily scales trees and hay bales with only 3 legs. Everyone is amazed at his mobility and his vibrant health - again, Under the Weather definitively made the difference in his life, both as a kitten and as an adult recovering from a nasty infection developed within his deep lacerations prior to him literally dragging himself home for amputation surgery. ALL rescues, rehabs and farms should keep Under the Weather on hand to use for the sick or weak furballs. I'd give far more than 5 stars if possible, cannot recommend enough! ### ⭐⭐⭐⭐⭐ It really works. My cat was worth *by R***. on 7 July 2026* This stuff is amazing. My cat was on his way out and now he's out walking around purring and looking great. The second tube did the trick. Lucky is the cats name and he's twenty five years old. ### ⭐⭐⭐⭐ Helping my elderly cat. *by M***M on 27 March 2026* I bought this because my elderly cat has been losing weight. We found out she has some issues chewing, so we switched her food, but she needs to put on the weight she lost to be healthy. She doesn't eat as much as she should, so we started adding this to her food. It's been a couple of weeks now and she's gained almost a pound back which is really good. We put it on subscription delivery so that we can keep adding it to her food for as long as she needs it. It does do what it says in stimulating the cat's appetite. She has become very demanding in asking for food several times a day now, which we are happy about right now. She's got a bit mor energy moving around, jumping up on the bed again, chasing us to demand her food. The reason I gave it a 4 star is, my cat does not like the flavor. Mixing it in the food helps, but if we don't mash it in well and she tastes it, she won't touch it. ## Frequently Bought Together - Under The Weather Pet | Ready Cal for Cats 100cc | High Calorie Supplement | Cat Weight Gainer and High Calorie Booster | 10 Vitamins, 7 Minerals & Omega Fatty Acids (for Cats 100cc) - Virbac Rebound Recuperation Formula for Cats, Clear - Under the Weather Ready Cal Powder for Cats | High-Calorie Weight Gainer & Appetite Stimulant | Cat Energy Booster Veterinarian-Approved Pet Supplement with Vitamins & Minerals | Chicken Flavor --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.gr/products/719287315-pet-ready-cal-for-cats-100cc-high-calorie-supplement-cat](https://www.desertcart.gr/products/719287315-pet-ready-cal-for-cats-100cc-high-calorie-supplement-cat) --- *Product available on Desertcart Greece* *Store origin: GR* *Last updated: 2026-07-31*