---
product_id: 691977425
title: "Under the Weather Pet Electrolytes Ready Cal Plus Gel for Cats | Vet-Formulated High-Calorie Supplement for Cats & Kittens | Promotes Weight Gain & Boosts Energy for Sick Felines | 3.5 Oz Tube Pack"
brand: "undertheweatherpet"
price: "€ 44.21"
currency: EUR
in_stock: true
reviews_count: 8
category: "Undertheweatherpet"
url: https://www.desertcart.gr/products/691977425-under-the-weather-pet-electrolytes-ready-cal-plus-gel-cats
store_origin: GR
region: Greece
---

# Boosts energy fast Vet-formulated salmon flavor High-calorie for weight gain Under the Weather Pet Electrolytes Ready Cal Plus Gel for Cats | Vet-Formulated High-Calorie Supplement for Cats & Kittens | Promotes Weight Gain & Boosts Energy for Sick Felines | 3.5 Oz Tube Pack

**Brand:** undertheweatherpet
**Price:** € 44.21
**Availability:** ✅ In Stock

## Summary

> 🐾 Fuel their comeback with every lick!

## Quick Answers

- **What is this?** Under the Weather Pet Electrolytes Ready Cal Plus Gel for Cats | Vet-Formulated High-Calorie Supplement for Cats & Kittens | Promotes Weight Gain & Boosts Energy for Sick Felines | 3.5 Oz Tube Pack by undertheweatherpet
- **How much does it cost?** € 44.21 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/691977425-under-the-weather-pet-electrolytes-ready-cal-plus-gel-cats)

## Best For

- undertheweatherpet enthusiasts

## Why This Product

- Trusted undertheweatherpet brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Effortless Feeding:** Squeezable gel tube makes administering supplements to even the pickiest cats a breeze.
- • **All-Natural & USA Made:** Premium, corn-free ingredients crafted in the USA with a commitment to pet welfare.
- • **Power-Packed Nutrition:** Vet-approved formula with essential vitamins, minerals, and electrolytes to fuel your cat’s vitality.
- • **Trusted by Rescuers & Vets:** Proven life-saver for sick and underweight cats, endorsed by professionals and rescue farms alike.
- • **Tailored for Every Life Stage:** Perfect for kittens, seniors, and recovering cats needing a nutritional boost.

## Overview

Under the Weather Pet Electrolytes Ready Cal Plus Gel is a vet-formulated, high-calorie supplement designed to promote weight gain and boost energy in cats and kittens. This salmon-flavored gel delivers essential vitamins, minerals, electrolytes, and Omega fatty acids in an easy-to-use squeezable tube, ideal for finicky or recovering felines. Made with all-natural ingredients in the USA, it supports overall health and vitality, making it a trusted choice for pet owners and rescue professionals alike.

## Description

desertcart.com : Under the Weather Pet Electrolytes Ready Cal Plus Gel for Cats | Vet-Formulated High-Calorie Supplement for Cats & Kittens | Promotes Weight Gain & Boosts Energy for Sick Felines | 3.5 Oz Tube Pack : Pet Supplies

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: She Loves the Taste and is Finally Gaining Weight! - Amazing for weight gain in senior cats! My cat has an overactive thyroid and was extremely frail despite being on medication. Since adding this gel, she’s finally putting on weight—her hip bones and spine aren't as visible, and she looks much healthier. She loves the flavor and eats it readily. Highly recommend for anyone struggling to get their senior pet to gain weight. I'll update this after her next vet visit late January.

## Features

- HIGH-CALORIE SUPPLEMENT GEL WITH ELECTROLYTES: Give your feline companion a nutritious, high-calorie treat to support their daily needs. This ready-to-use gel is packed with essential nutrients and healthy ingredients to help cats and kittens struggling with their appetite gain weight. Specially formulated to enhance appetite and boost energy levels, it’s safe for cats of all ages and the perfect solution for promoting overall well-being. Shelf life: 24 months from manufacturing date. EXP date printed on top of the cap as EXP MM/YY.
- VET FORMULATED AND APPROVED: This tasty salmon-flavored ready-cal gel oral supplement was carefully formulated by veterinarians, ensuring wellness for cats and kittens of all ages. This high-calorie supplement is enriched with a perfect blend of essential vitamins, minerals, electrolytes, Omega-3 and Omega-6 essential fatty acids, which are vital for promoting optimal brain function, maintaining a healthy heart, and shiny coat.
- IDEAL FOR FINICKY CATS AND KITTENS: This easy-to-feed high-calorie oral gel is specially designed to provide essential nutrition for growing kittens, young cats, recovering pets after surgery or injury, senior cats, and even picky eaters. A must-have nutritional cat supplement for supporting the overall health and vitality of your beloved feline companions.
- EASY-TO-USE SQUEEZABLE TUBE: This tasty oral gel supplement comes in a convenient 100cc squeezable tube. To encourage even the pickiest of pets, simply apply a small amount to their lip or paw. They'll naturally lick it off, enjoying the appealing flavor, making the process both simple and enjoyable for you and your furry friend.
- ALL-NATURAL & MANUFACTURED IN THE USA: Our tasty lickable cat high-calorie treats are proudly made with all-natural ingredients and manufactured in the USA. A portion of every sale supports the spay/neuter and transportation of pets from overpopulated areas of the USA to the Northeast for adoption. Shelf life: 24 months from manufacturing date. Product is labeled with ‘EXP MM/YY’ on the lid.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Allergen Information | Corn-Free |
| Brand | undertheweatherpet |
| Customer Reviews | 4.2 out of 5 stars 8,888 Reviews |
| Flavor | Electrolytes For Cats 100cc |
| Item Weight | 0.12 Kilograms |
| Manufacturer | Under the Weather |
| Specific Uses For Product | For Underweight Cats |

## Product Details

- **Allergen Information:** Corn-Free
- **Brand:** undertheweatherpet
- **Flavor:** Electrolytes For Cats 100cc
- **Item Weight:** 0.12 Kilograms
- **Specific Uses For Product:** For Underweight Cats

## Images

![Under the Weather Pet Electrolytes Ready Cal Plus Gel for Cats | Vet-Formulated High-Calorie Supplement for Cats & Kittens | Promotes Weight Gain & Boosts Energy for Sick Felines | 3.5 Oz Tube Pack - Image 1](https://m.media-amazon.com/images/I/61qTuGfs6JL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ SAVES LIVES on our farm where we frequently rescue sick kittens
*by J***L on August 9, 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!

### ⭐⭐⭐⭐⭐ She Loves the Taste and is Finally Gaining Weight!
*by M***B on January 3, 2026*

Amazing for weight gain in senior cats! My cat has an overactive thyroid and was extremely frail despite being on medication. Since adding this gel, she’s finally putting on weight—her hip bones and spine aren't as visible, and she looks much healthier. She loves the flavor and eats it readily. Highly recommend for anyone struggling to get their senior pet to gain weight. I'll update this after her next vet visit late January.

### ⭐⭐⭐⭐⭐ This saved my baby's life
*by A***E on December 23, 2025*

Absolutely amazing product, my cat hasn't eaten or drank anything in 2 days and she was looking BAD. I was about to take her back to the vet when they opened at 7am but this was delivered at midnight so we gave her a dose (watered it down with warm water for easier dosage in a syringe into the mouth), sure she didn't like it but she immediately perked up and got enough energy to walk around! It's been almost 30-35 hours since she's had a dose and she's doing WORLD'S better. This and her prescription are working amazing for her. I'll 100% be buying this again if my baby's are ever sick and recommending this to friends <3 my vet said she loved that I bought this and was very pleased it worked for her.

## Frequently Bought Together

- Under the Weather Pet Electrolytes Ready Cal Plus Gel for Cats | Vet-Formulated High-Calorie Supplement for Cats & Kittens | Promotes Weight Gain & Boosts Energy for Sick Cats | 3.5 Oz Tube Pack
- Virbac Rebound Recuperation Formula for Cats, Clear

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*Product available on Desertcart Greece*
*Store origin: GR*
*Last updated: 2026-01-27*