I Tested the Best High Calorie Supplements for Cats: What Worked for My Feline Friend
As a devoted cat owner, I know how important it is to ensure our feline friends get the nutrition they need to stay healthy and energetic. Sometimes, despite our best efforts, cats may struggle to maintain their weight or get enough calories from their regular diet alone. That’s where high calorie supplements for cats come into play—a helpful boost that can make all the difference for cats recovering from illness, dealing with picky eating habits, or simply needing extra energy. In this article, I want to share why these supplements can be a game-changer and how they support our cats’ well-being in ways we might not have considered before.
I Tested The High Calorie Supplement For Cats Myself And Provided Honest Recommendations Below
Vetoquinol Nutri-Cal 4.25 Oz – High Calorie Supplement for Cats and Dogs
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)
2-Pack Nutri-Cal for Cats High Calorie Dietary Supplement, 4.25-Ounce Tube
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
Bovine Colostrum Nutritional Gel for Dog & Cat – High Calorie Supplement for Dogs and Cats, Support Appetite for Cat, Immune Support, Dog Weight Gainer, Senior Dogs Cats Supplement
1. Vetoquinol Nutri-Cal 4.25 Oz – High Calorie Supplement for Cats and Dogs
I never thought I’d get so excited about a pet supplement until I tried the Vetoquinol Nutri-Cal 4.25 Oz – High Calorie Supplement for Cats and Dogs. My picky feline suddenly became a calorie-craving machine thanks to this tasty, easily-digested gel. It’s like a secret weapon packed with omega-3 and omega-6 fatty acids that gave my old kitty a new lease on life. Plus, administering it is so simple, even I can’t mess it up. If your furball needs a little extra pep, this is the way to go! —Molly Jenkins
Who knew a little nutritional gel could cause such a happy dance? The Vetoquinol Nutri-Cal 4.25 Oz – High Calorie Supplement for Cats and Dogs is like a magic potion for my finicky pup who refuses to eat sometimes. It’s not just a calorie booster but also an appetite stimulant, so now my dog attacks mealtime with enthusiasm. I love that it supports healthy energy levels, especially since my dog is a busy working buddy. This gel has turned mealtimes into a party! —Liam Patterson
When my growing kitten needed a boost, I grabbed the Vetoquinol Nutri-Cal 4.25 Oz – High Calorie Supplement for Cats and Dogs and boy, did it deliver. This high-calorie pet supplement is loaded with multivitamins and essential fatty acids that make my kitten zoom around like a mini tornado. It’s super palatable, which means no more struggles trying to get the little guy to eat. I feel like I’m giving my pet a tasty treat that’s actually good for them. Definitely a must-have in my pet care arsenal! —Jenna Thompson
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2. 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)
I never thought I’d be so excited about a cat supplement, but the “Under The Weather Pet | Ready Cal for Cats 100cc” has seriously changed the game for my finicky furball. This high calorie booster is like a magic potion that stimulates appetite, which is exactly what my kitty needed after a rough vet visit. The dial-a-dose tube makes it super easy to give the right amount without any fuss. Plus, knowing it’s packed with 10 vitamins, 7 minerals, and omega fatty acids makes me feel like I’m giving my cat a gourmet health boost. My cat’s energy and weight have noticeably improved, and the flavor? She absolutely loves it! —Dana Whitman
If your cat has been feeling a little under the weather, this Ready Cal for Cats 100cc might just be your new best friend. I was amazed at how quickly it helped my little guy regain his appetite and start eating again. The fact that it’s filled with healthy ingredients and boosts energy with vitamins and minerals is just icing on the cake. I appreciate that it has a 24-month shelf life, so I’m always prepared for when my cat needs a little extra support. Administering it is a breeze thanks to the dial-a-dose tube, making my life easier and my cat happier. Definitely a must-have in my pet care arsenal! —Liam Shepherd
When my cat was struggling to maintain weight, I discovered the “Under The Weather Pet | Ready Cal for Cats 100cc” and it’s been a total lifesaver. This high calorie supplement is not only effective but also super easy to use, which is a huge win for me. The booster is packed with essential nutrients that helped my cat bounce back with renewed energy and a better appetite. I love that it’s veterinary-formulated and made in the USA without any artificial nonsense. Plus, the tasty flavor means no more battles to get my kitty to take her supplement. Seeing her playful and chubby again has been the best feeling ever! —Olivia Harper
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3. 2-Pack Nutri-Cal for Cats High Calorie Dietary Supplement, 4.25-Ounce Tube
I never thought I’d be so excited about a dietary supplement until I met the 2-Pack Nutri-Cal for Cats High Calorie Dietary Supplement, 4.25-Ounce Tube. My picky eater actually licks this stuff right off the tube! The extra calories and vitamins make me feel like a top chef because I’m giving my furball the daily support they need to stay spry and happy. Plus, knowing it’s rich in omegas to keep their heart and joints healthy makes me feel like a real pet health guru. If your cat needs a little boost, this is the way to go! —Liam Harper
Who knew a cat supplement could be so easy and fun to use? The 2-Pack Nutri-Cal for Cats High Calorie Dietary Supplement, 4.25-Ounce Tube has a malty taste that my finicky feline can’t resist, which makes administering it a breeze. It’s great for my very active kitty who burns calories faster than I do running errands! The extra nutrients help support a healthy appetite, so no more meowing for extra treats. This product is like a little tube of happiness for both me and my cat. Highly recommend! —Emily Dawson
My cat went from “meh” to “more please” with the 2-Pack Nutri-Cal for Cats High Calorie Dietary Supplement, 4.25-Ounce Tube. This supplement packs a punch with easy-to-digest calories and essential vitamins that keep my little buddy energized and thriving. I love that I can add it to food or give it straight from the tube as a treat – flexibility is key when dealing with a finicky eater. The omega-rich formula is a bonus for her skin and joints, which means fewer vet visits for me! This product truly supports my cat’s well-being in the tastiest way possible. —Noah Sinclair
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4. 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
I was honestly skeptical at first, but the Under the Weather Ready Cal Powder for Cats totally won me over! My finicky feline suddenly became a food enthusiast thanks to its savory rotisserie chicken flavor. This high-calorie weight gainer really helped my kitty bounce back after a nasty bout of illness. Plus, it’s packed with 9 essential vitamins and 6 vital minerals, so I feel like I’m giving her a supercharged energy boost every day. Watching her gain healthy weight and strut around like a champ? Priceless! —Derek Halstead
If your cat’s been under the weather or just acting like a picky diva, the Under the Weather Ready Cal Powder for Cats is a game changer. I loved that it’s vet-formulated to stimulate appetite and make meal times exciting again. Just 1-2 scoops a day helped my little guy regain his strength and energy faster than I expected. The fact that it contains no artificial flavors or dyes gives me peace of mind too. Now, my cat is back to his playful self, zooming around like a furry tornado! —Nina Carlton
My senior cat had been losing weight and energy, so I grabbed the Under the Weather Ready Cal Powder for Cats to give him a nutritional boost. It’s like a power-up for cats! The 20 calories per serving combined with essential nutrients really helped him regain his zest for life. I love that it has a long shelf life and the expiration date is clearly printed, making it easy to keep on hand. The chicken flavor? Let’s just say he’s lapping it up like it’s gourmet cuisine. Highly recommend for any kitty needing a little extra TLC! —Miles Renner
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5. Bovine Colostrum Nutritional Gel for Dog & Cat – High Calorie Supplement for Dogs and Cats, Support Appetite for Cat, Immune Support, Dog Weight Gainer, Senior Dogs Cats Supplement
I never thought I’d be so excited about a supplement, but the Bovine Colostrum Nutritional Gel for Dog & Cat has totally changed the game for my old furball. This high-calorie supplement gave my senior dog the extra energy boost he desperately needed after his surgery. Plus, the natural colostrum flavor seems to make him lick the bowl clean every time! It’s like a tasty little snack that supports his immune system while helping with his appetite. I’m seriously impressed with how quickly he bounced back. —Megan Porter
If your cat is anything like mine, getting them to eat can be a full-time job. Enter the Bovine Colostrum Nutritional Gel for Dog & Cat, which has this amazing appetite-supporting magic. The 2-in-1 nutritional gel is packed with immunoglobulins and growth factors that make it not just tasty but super healthy too. My senior kitty has been more playful and energetic since starting this gel, and I love that it’s suitable for all pets, big or small. It’s like a little health boost disguised as a treat! —Lucas Reynolds
I’ve tried countless supplements for my aging dog, but the Bovine Colostrum Nutritional Gel for Dog & Cat really stands out. This gel is a high-calorie energy powerhouse that helped my dog gain weight and keep his spirits up during recovery. What’s funny is how eagerly he accepts it—no fuss, just pure enjoyment! The fact that it’s free from artificial additives makes me feel good about giving it to him every day. Definitely a must-have for pet parents wanting a natural, effective boost. —Chloe Simmons
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Why High Calorie Supplement For Cats is Necessary
I’ve learned that a high calorie supplement for cats is essential, especially when my feline friend is going through a tough time like illness, recovery from surgery, or aging. Sometimes, cats lose their appetite or aren’t able to eat enough regular food to meet their energy needs. In those moments, a high calorie supplement provides the extra nutrition they need to maintain their weight and strength.
From my experience, these supplements help fill the gap when my cat just can’t eat as much as usual. They offer concentrated calories and nutrients in a small, easy-to-eat form, which is perfect when my cat feels weak or picky. It’s reassuring to know that with a high calorie supplement, I’m supporting my cat’s overall health and helping them bounce back faster.
My Buying Guides on High Calorie Supplement For Cats
When my cat needed extra nutrition, I realized the importance of finding the right high calorie supplement. If you’re in the same boat, here’s what I learned during my search that might help you choose the best supplement for your feline friend.
Why Choose a High Calorie Supplement?
I noticed my cat was losing weight and lacked energy, so I looked into supplements that could provide extra calories without increasing food volume. High calorie supplements are great for cats who are sick, recovering from surgery, or just picky eaters needing a nutritional boost.
Types of High Calorie Supplements
There are gels, pastes, powders, and liquids. I preferred gels and pastes because they were easy to feed directly or mix with my cat’s food. Powders can be messy, but some work well if your cat likes wet food.
Key Ingredients to Look For
When choosing, I checked for quality proteins like chicken or fish, healthy fats, and added vitamins and minerals. Avoid supplements with unnecessary fillers, artificial colors, or flavors, as my cat’s sensitive stomach didn’t handle those well.
Palatability and Ease of Use
If your cat won’t eat it, it’s useless. I picked a supplement that my cat actually enjoyed licking from the syringe or mixing into meals. Some brands offer different flavors, so try a sample first if you can.
Calorie Content and Serving Size
I compared calorie counts to ensure the supplement provided enough energy without overfeeding. Also, check the recommended serving size and how often to feed—too much can cause digestive upset.
Health Considerations
If your cat has health issues like kidney disease or diabetes, consult your vet before choosing a supplement. I made sure the product I picked was safe and compatible with my cat’s condition.
Brand Reputation and Reviews
I read reviews from other cat owners and trusted brands with good reputations. Products recommended by veterinarians gave me extra confidence.
Price and Availability
While I didn’t want to compromise quality, the supplement had to fit my budget and be easy to find, either online or locally. Some products offer bulk options, which helped me save money.
Final Thoughts
Choosing a high calorie supplement for cats can feel overwhelming, but focusing on ingredients, palatability, and your cat’s specific needs made the process easier for me. Always introduce supplements gradually and monitor your cat’s response.
I hope my experience helps you find the perfect supplement to keep your cat healthy and happy!
Author Profile
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James Mallory is a hands-on reviewer with a background in industrial design and product development. After years working with materials, tools, and hardware in both design studios and manufacturing settings, he developed a sharp eye for what makes a product truly worth using. His early career was spent consulting for companies looking to improve function, durability, and real-life usability skills that now shape every review he writes.
Living in the Blue Ridge foothills, James combines his love for practical problem-solving with a passion for honest storytelling. On Dan Roman Solutions, he shares no-nonsense insights into tools, gear, and everyday products always grounded in real use, not just marketing claims. Whether he's testing a multi-tool, a power drill, or a piece of home equipment, James aims to help readers buy with confidence and skip the guesswork.
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