Seems to be helping my hyperthyroid cat's weight.We'll see when I take her back to the vet.
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A proprietary blend of natural plants and minerals proven to balance thyroid function and improve your cat’s overall well-being.
Tree easy ways to give it
Crush & sprinkle
Mix food or treat
Give directly
Dosage:
Directions:
Three Easy Ways to administer pills:
Important: Pills may not dissolve quickly in water. This is okay—your pet is still receiving the remedy.
Store in a dry place and away from essential oils and strong scents.
Pills may not dissolve quickly in water. This is okay — your pet is still receiving the remedy.
Store in a dry place and away from essential oils and strong scents.

Is your cat losing weight, drinking more water than usual, or acting restless? These could be signs of hyperthyroidism, a common condition in cats that affects appetite, behavior, and coat health. These symptoms can leave your cat feeling stressed, uncomfortable, and unwell.
If left untreated, hyperthyroidism can lead to severe weight loss, poor fur quality, and disrupted sleep, making it harder for your cat to stay healthy and happy.
That’s why you need Weight Gain & Thyroid Support!
This natural remedy helps with weight management and appetite while addressing the root causes of hyperthyroidism, promoting balanced thyroid function and restoring your cat’s well-being.
Here’s how it helps:
Read more about why cats and cat parents love this natural remedy.
Dosage:
Directions:
Three Easy Ways to administer pills:
Important: Pills may not dissolve quickly in water. This is okay—your pet is still receiving the remedy.
Store in a dry place and away from essential oils and strong scents.
COMPOSITION
Additional Features:
CONTRAINDICATIONS:
This remedy and its ingredients generally have no specific contraindications and are considered safe with all medications. However, if your pet has existing health issues or if you have any questions or concerns, it is advised to consult your veterinarian.
See the FAQs at the bottom for more answers to questions about Cat Hyperthyroid and Weight Gain Supplement
Is your cat losing weight, drinking more water than usual, or acting restless? These could be signs of hyperthyroidism, a common condition in cats that affects appetite, behavior, and coat health. These symptoms can leave your cat feeling stressed, uncomfortable, and unwell.
If left untreated, hyperthyroidism can lead to severe weight loss, poor fur quality, and disrupted sleep, making it harder for your cat to stay healthy and happy.
That’s why you need Weight Gain & Thyroid Support!
This natural remedy helps with weight management and appetite while addressing the root causes of hyperthyroidism, promoting balanced thyroid function and restoring your cat’s well-being.
Here’s how it helps:
Read more about why cats and cat parents love this natural remedy.
Dosage:
Directions:
Three Easy Ways to administer pills:
Important: Pills may not dissolve quickly in water. This is okay—your pet is still receiving the remedy.
Store in a dry place and away from essential oils and strong scents.
COMPOSITION
Additional Features:
CONTRAINDICATIONS:
This remedy and its ingredients generally have no specific contraindications and are considered safe with all medications. However, if your pet has existing health issues or if you have any questions or concerns, it is advised to consult your veterinarian.
See the FAQs at the bottom for more answers to questions about Cat Hyperthyroid and Weight Gain Supplement
The most common signs of cat hyperthyroidism are weight loss - despite an increased appetite, hair loss, mood swings, increased thirst and urination. Watching your cat's health decline is truly heartbreaking.
If your cat exhibits any of the following symptoms, this natural thyroid remedy for cats may be the perfect solution:
Hyperthyroidism may also cause vomiting, diarrhea, and hyperactivity. If you spot more than one of these symptoms in your kitty, get their thyroid checked right away.
Yes, if your cat won’t eat, has lost a lot of weight, is throwing up, and is looking like a scrawny street cat, this natural Hyperthyroid cat weight gain supplement can provide metabolic support - which helps your cat gain weight, stabilize appetite, and thirst. Before long your kitty will be cuddly once again. In addition, once thyroid levels are normal most cats will stop losing weight and their hungriness may decrease. They may even start to put weight back on.
Giving your cat high-protein, high-energy foods can also make them look and feel healthier. As many cats with hyperthyroidism have diabetes, pet owners should avoid high-carbohydrate foods, especially dry food with lots of grains.
Most hyperthyroid treatments are very expensive. The cost for radioiodine therapy is generally around $1500- $1550, depending on the dosage needed for your cat's treatment. Using this Hyperthyroid cat supplement can be more effective and significantly cheaper.
Rarely will hyperthyroidism in cats cause a loss in appetite. BUT Hypothyroidism in cats is a disorder where the body does not produce enough thyroid hormone, often resulting in decreased appetite and unexplained weight gain.
Alopecia is an early sign of hyperthyroidism. You may notice your cat has patchy hair loss, and will groom themselves less. Thyroid problems may also cause the fur to look matted, dull and greasy.
It really depends on the weight and size of your cat, but in general a cat will need 60 to 80 ml of fresh water in addition to its food per day.
With hyperthyroidism, cats will drink more and then urinate more. This can make it difficult for them to reach the litter box in time and urinate wherever they are.
YES. Do you find it frustrating that your veterinarian prescribes harsh and expensive medications that only make your cat worse? As pet parents ourselves we feel your pain.
The Hyper-Balance Thyroid Care is a homeopathic formula and is therefore perfectly safe for home use, and long term use. With the added benefit that it will not cause nasty side effects often associated with NSAIDS and many other medications.
Cats with hyperthyroidism often experience increased energy and restlessness due to the overproduction of thyroid hormones. However, as the condition progresses, this excessive energy can lead to fatigue, anxiety, and trouble sleeping.
Hyperthyroidism speeds up a cat’s metabolism, causing them to burn calories faster than they can consume. This leads to weight loss even if the cat is eating more than usual.Supporting thyroid health with supplements can help balance their metabolism and promote healthy weight gain.
Yes, hyperthyroidism can cause vomiting, diarrhea, and other digestive problems in cats. These issues are often linked to the overactive thyroid’s effect on metabolism and the gastrointestinal system.
Helping a hyperthyroid cat regain weight involves balancing their thyroid levels. Using a natural supplement like BestLife4Pets Cat Hyperthyroid + Weight Gain Support can help regulate thyroid function, improve metabolism, and support healthy weight gain without harsh medications.
Cats with hyperthyroidism often suffer from weight loss, dull coats, mood changes, and excessive thirst. If left untreated, these symptoms can worsen, leading to vomiting, anxiety, aggression, and fur loss—all signs of an overactive thyroid. While medications or surgery are common solutions, they can come with unwanted side effects.
Our Cat Hyperthyroidism + Weight Gain Support offers a natural, plant-based alternative to help your cat recover without harsh chemicals or additives.
Why Your Cat Will Love Our Hyperthyroidism Remedy:
Help your cat thrive with BestLife4Pets Cat Hyperthyroidism + Weight Gain Support and watch them return to their playful, energetic self!
WHAT OUR CUSTOMERS SAY
Connect with our health success team today for personalized guidance and support.
CHAT WITH USOverall rating: 4.3 / 5 from 144 reviews.
Seems to be helping my hyperthyroid cat's weight.We'll see when I take her back to the vet.
Deborah R. 5/5 Verified
It makes her hungry so she's eating better and gaining weight. Doesn't seem to be any side effects either.
Kathy A. 5/5 Verified
This is my 16 yr old Little Joe. He was diagnosed with Hyperthyroid in February of this year. He also has other health issues. In the last year he has lost 6 lbs. He is around 9 lbs now. Very thin, no muscle mass left. He has been on the weight gain and thyroid remedy for 4 weeks now. I'm still not seeing much of a change yet except he is drinking and eating less. I will continue giving him his 2 pills a day and hopefully in the next 2 weeks or so I will see more changes. I'm praying he will gain 1 or 2 lbs back. 🙏🐈⬛💙
Tracy W. 3/5 Verified
They haven’t gained weight yet but they eat the tiny pills easily in a Greenies pill pocket💕
Deborah R. 4/5 Verified
The best news? It doesn’t taste bad and the pills are tiny. My 15y/o kitty kid hates pills so crushing or liquid is always the best bet. Crushed and mixed with a Churu he laps it right up, even asks for his medicine in the evenings. He’s put a little weight on and isn’t acting as frantic about food. I didn’t want to subject him to the traditional vet experience and treatment for hyperthyroidism. He’s back to being my chirpy, sweet old boy.
Eric S. 5/5 Verified
Our cat Pickles has been taking this in his foods for less than a month. I've noticed that the sides around his belly seem a little bigger. He's 16 years old and has always been on the thin side. It might be too soon to see any more results.
Nancy S. 4/5 Verified
Our Little Beauty adopted us when she was under a 1 years old. She has always been little. She must have been a runt. She is now 18 years old. We love with all of heart!!!! She got a respiratory cold and wasn’t eating well; food she normally liked. Our veterinarian had her an antibiotic. She needed to gain weight. So, We bought some pate food she had liked in the past; And bought the appetite and hypothyroid supplement. The supplement has been made a huge difference for our very special and very loved Little Beauty!!!!! We are very grateful!!!!!
Deborah L. 5/5 Verified
Saved my stormy
Tanya S. 5/5 Verified
Helps her out alot..fur is already better,more energy..
Terry O. 5/5 Verified
He seems to gaining weight it’s only Been a few days so hard to tell but he has a good appetite
Christine C. 5/5 Verified
You have literally saved my stormy from dying. This is amazing. I truly appreciate it
Tanya S. 5/5 Verified
Both of our kitty cats gain a little bit more weight after taking this supplement. Thank you!
Ken R. 5/5 Verified
After weeks of struggling with Shayna's hyperthyroidism symptoms—ravenous hunger, constant yowling, and unkempt coat—we found unexpected relief with BestLife4Pets' weight gain formula. Unlike other treatments requiring elaborate tuna juice disguises, these tasteless pills integrated seamlessly into her meals. Within 24 hours of the initial 2-pill dose, her vocalizations decreased noticeably. By day three at 3 pills daily (combined with their allergy relief formula), her coat regained its luster and she gained nearly a pound. Most impressively, this formerly skeptical cat—who typically rejects any food additives—ate these without hesitation. For owners battling feline hyperthyroidism'sexhausting symptoms, this regimen delivered faster, more comprehensive improvement than anything we've tried. We are going to the holistic vet next week and will be sure to let them know what's working. Thank you Bestlife4pets
Shawn C. 5/5
I can't express my gratitude in this product my girl Marley was diagnosed with hyperthyroidism could not take meds from vet, everything I tried she kept losing weight down to 5lbs. It may only be 30 days on this supplement but her overall health has improved I am just thankful for each day I get to see her not sick. Thankyou ❤️
Gloria S. 5/5 Verified
I ordered BestLife4Pets in December 2024 for the first time. I was desperate for a Miracle!! Our Precious boy Spikey-Handsome is 17 years old and has Hyperthyroidism and has been on Methimazole for years. He was losing weight,we could feel his bones, his coat was thinning and unhealthy. My heart was breaking, I have him on a grain free,no by product, and no fish diet. It wasn't enough. I was skeptical about the Weight gain/Hyperthyroidism supplement, so I started him on a small dose. He didn't have any problems with it so I upped him to the recommended dosage of 3 pills 2 times a day. I can honestly say IT WORKS!!! I feel like we got our boy back!! He rarely vomits, he's more active, he's happier, not howling, he's hungrier ,asks for second and thirds and most importantly he keeps his food down. His coat is beautiful, soft,fluffy, no more scabs. He's back to begging and wanting to be loved all the time like before!! I am looking forward to his full blood panel coming up soon,especially his T4!! I will update after with his results. I'll be getting him weighed and nails trimmed prior to his appointment. His last weight check Apr.1st,he had gained almost a whole pound! I absolutely recommend BestLife4Pets for anyone who wants to improve the Health and Life of their Pet!! They have so many products available, I tell everyone with pets to check them out! I am forever grateful for this product!! The customer service is awesome too!! They truly care about your pets health ,definitely a special company and affordable!!🐾💗
Heather S. 5/5 Verified
Melo is 8 years old, started rapidly losing weight starting probably August, acted like he was starving and his coat was terrible looking. I kept putting off taking him to the vet because he was still lovey , playing with other cats and going outside. I started looking on the internet with his symptoms and it seemed he had hypothyroidism, your product came up, I read the reviews and it sure sounded like Melo, bought two bottles, but then he took a turn for the worse and i ended up taking him to the vet, they did bloodwork and he was diagnosed with hypothyroidism. They prescribed him something, metho something łøł used it for a week and didn’t see any improvement. Your product was sitting on the counter so I stopped the script and started this , 2 pills once a day, within just a couple days he just seemed better, started acting normal again. We are about two weeks into it and he’s doing amazing!! He’s actually grooming again! I think he’s gaining weight too! He goes back to vet for bloodwork at the end of the month, can’t wait to see what it says! Vet will be surprised when i tell them we’re not using the script ! THANK YOU
Kelly B. 5/5 Verified
My cat possum could not tolerate the medications she was prescribed. She was losing weight rapidly. I put her on your cat weight gain remedy for hyper thyroidism. She seems to be doing very well. The end of February I will be taking her to the vet for another check up to see if she has gained weight. Thank you so much for your help.
Linda G. 5/5 Verified
My buddy was losing so much weight, his skin was raw from licking and he was eating everything in sight. He wasn't being himself, and was just acting off. Its been about three and a half weeks and I notice improvements already. My box cat is back!!
Elizabeth A. 5/5
It's been just a little over a week giving our grumpy old senior Boy this supplement. He has more energy and is finally retaining his weight again. This was a great find to help our senior cat. It's adding more years to his life, thank you so much!
Elsa P. 5/5 Verified
IKE (15) withered away to noting - spine sticking out, hardly sleeping, poor fur quality - on just methimazole. I had to do something and couldn't afford the 131 radiation treatment (still saving up!). I researched online and found BestLife4Pets weight gainer and wow what a difference! I checked with my vet first and now he's back to slightly above weight from a year ago (still underweight for his size yet improving) his fur is much mended and his appetite improved and sleep is better too! Saw some improvement after a month and upped his dose from 2 twice a day to 4 around 90 days or so. Gave bottle and a few pills to vet for her to have. He's good about taking these pills especially if he accidentally bites them - they disintegrate quickly and chewing them is a non issue for this super picky guy
Joslyn K. 4/5 Verified
The thyroid weight gain seems to be having a positive effect. It isn't easy to give orally as my cat prefers to spit it out, and goes around the small pills in wet food. I recommend using a pate canned food, not a pieces and gravy.
Heather C. 4/5 Verified
Fred is doing great!! He has gained a little over a pound since he’s been on this medication. He has a lot more energy too. We are thrilled!! Thank you so much!!
Susan Gross G. 5/5 Verified
Thank you🙏🙏🙏 I am so pleased with this product! Bella was on her last life for sure. Our 14 year old Bella was tested by a vet and found to have thyroid problems they wanted to put her on meds. After researching the harshness of these drugs we looked online for a natural alternative and found this product! It has completely healed Bella, she has gained weight, her eating habits have improved and best of all, she is happy and getting close to her 16th B-day. Also, this product is tasteless, I tested it! I just dissolve it in water and add it to her food, very easy. Thanks again! Bella and Bob
Robert K. 5/5 Verified
Sapphire is 18 years young ! She definitely is feeling and looking much better since starting the hyperthyroid supplement. It’s wonderful to have an alternative to the costly and stressful treatments offered by traditional medicine. Thanks very much! 😻
Barbara P. 5/5 Verified
18-year-old Sapphire’s Health has improved since starting the hyperthyroidism supplements several weeks ago. Her fur is growing back and is definitely healthier than before. She is putting on weight and returning to her sassy self. Grateful for this alternative, especially for an aging pet. Thank you ! 😻
Barb P. 5/5
Ellis is the dark colored cat in the pic I sent. He's 17 yeats old, so we are not expecting a miracle. He seemed better a few weeks after taking the product. Today he's moppy. Thanks for helping us try to make him better. We took him to the vet back in August and didn't have too much hope! Thats bee a while and we are grateful for everyday we get to spend with him. Thanks for helping us! Sharon Lovenbury
Sharon L. 5/5 Verified
I have an older cat who was diagnosed with Hyperthyroidism a few months ago. He wasn’t doing very well despite being on prescription medication. I added this supplement to his diet and the change in him has really been remarkable! You can tell that he is feeling better. He has an appointment next week for bloodwork and I’m interested to find out what the results are. Previously his lab value was so high, that it was off the chart. I’m very pleased with the results I’m seeing thus far.
Nancy R. 5/5 Verified
Hello Tatiana, I have just sent a review link, so all that needs to be done if or when you can find a moment, is to copy and paste this into the email: My Burmese mix black cat who is 13 that's going to turn 14 developed hypothyroidism in May, and I'm not sure if it was attributed to leaving her food can out after she's finished eating so she can lick it inside or the fact that dust mites attacked her. I found BestLife4Pets.com, and, of course, reading the review, I went right to only black cats and the age, and the syptoms described matched what she was experiencing, drinking and peeing a little more, weight loss in six months, and her coat texture changed, and she was yowling. ‼️💓Best life for pets has been with me via email and phone. They were with me every step of the way and guided me and helped me and even when I told my research part they were right there with me also explaining things.. that would be helpful for her life I purchased the hypothyroidism pills and waited and monitored for about 4 1/2 weeks It is super easy cause these pills are so tiny even from my contortionist cat that doesn't want to be touched to put anything down her throat (I just wanted to do it fast in quickly had the pills in the caps and I just put it down her mouth as if nothing she was over it in a sec ..of course you can crush them up with a soup spoon) THE RESULTS so far: she's less agitated, a lil more calmer Her drinking habits & peeing is back to normal. Her weight is not as what it was six months ago, however she did gain some weight back AND her thryroid located in the neck …the bulk size Diminished!! ✨Important to know.. a good DIET in tandem is important WITH much research they say go with ; strict prescription Petco Petland Hills Y/D (if your cat likes it ..if not)I but I decided to go the lower iodine route and yes still canned Do not buy any fish because rhe manufacturers lace with iodine IODINE… is found in those commercial cans. As right now I'm not doing freeze dried raw.(they say is the BEST Route) Rather, I found a low iodine cat food that I had to do research and bump it up by giving her more. I have to start looking maybe possibly for supplements because I do want her to gain more weight, but just like elderly people, you don't get the weight back like you used to STAY AWAY .. from using sprays aerosoaerosol sprays carrying chemicals, house cleaner I go completely organic Lysol used very little and also fresh water in a glass bowl ceramic bowl never plastic…. Bestlife4pets… made my cat comfortable and almost back to herself!! Meowmaziiiiiiing💓 Tati & SassygurL acts like 9 years old
Tatiana 5/5
It’s made a 100% difference in her overall health. I’m really pleased with it and will continue to give it to Cali.
Keith H. 5/5 Verified
This worked wonders for my 17yo Bella! All the typical symptoms for hypothyroidism are gone after one month of being on this supplement. She also has gained weight! Thank you so much for helping. 🙏
Marc M. 5/5 Verified
My old cat has been taking Thyroid medication for about two years but she still hasn’t gained weight. And the cost of bloodwork every two months is getting out of hand that why I got the Hyperthyroid + medication her b.m. Are not as hard still no weight gain but I will keep giving her it so that she can enjoy the rest of her life and not be stressed out about getting bloodwork let her enjoy life.🇺🇸
James H. 4/5 Verified
This remedy has been amazing for our cat, Loki! He has been taking this for a couple of months. He has gained weight, his coat is now healthy and shiny and he has so much energy and vitality!
Doree L. 5/5
I am so happy with the meds for BestLife4Pets. My kitty who has hyperthyroidism and was not eating and throwing up. She went down to 5 lbs when I discovered your Hyperthyroidism Supplement for Cats. She has stopped throwing up and is now eating. She has gained 1 1/2 lbs. Thank you so much for this product.
Susan Z. 5/5
He seems to be putting on weight and it does not make him sick like the prescription meds from the vet. So far we are happy with the product.
Jeanne H. 5/5 Verified
Daisy is 20 the vet said she most likely has hyperthyroidism. He said the cats old just leave her be. He didn't want to do anything because of her age. I started her not even two weeks ago on this product. I am seeing a great change in her already. Heart rate is down, she is grooming herself again and acting like a healthy cat again
Diane S. 5/5
Hello, my name is Au Lait. I am Siamese but born in Mexico. The end of May this year a blood panel revealed I was hyperthyroid. My human was concerned because I needed surgery and hyperthyroidism can affect the heart. This is not the best prognosis for cats undergoing anesthesia. My human had some Best Life 4 Pets Hyperthyroid tablets which my dear departed brother took to successful effect when he was diagnosed with the condition. But that's another tail. I took it for ONE month--then the pre-op labwork showed my thyroid operating in a normal range. After (1) month only. My vet was very happy, my human smug (she knew it was going to work) and the surgery went very well. I take other Best 4 Life 4 Pets homeopathics. Human crushes them to a powder and sprinkles on my food. I taste no difference whatsoever. The tablets work wonders for me and they are 100% natural. Like my eyes, natural blue, beautiful like the pretty blue bottles my Best Life comes in.
Diana Y. 5/5 Verified
I haven't been using this for long, but just in the short time it has made a difference, crying, drinking, and urinating less. He seems more relaxed and happier.
Marcie L. 4/5 Verified
I thought my cat Lion O, was dying, he lost about 10 pounds and was lethargic, not grooming, had matts, was constantly hungry, and eating a-lot but losing weight. His heartbeat was rapid. I looked inline and typed in all his symptoms and read that he probably had hyperthyroidism and ordered the medicine. It came promptly and immediately started giving it too him twice a day. He started getting better after the first day, and has gained weight and is now grooming again. He started to play and sleeps with me again. His heart rate is normal and i couldn't be happier as i really thought he was going to die. I will keep him on this product for the rest of his life. Very thankful to have my cat back!
Laura W. 5/5
I’ve been giving this to my cat for 3 weeks now. I am thrilled to say that he is looking better. He came to us as a stray and is roughly 13 years old. He is blind in one eye as a result of a car accident and that eye has been terribly weepy lately. He has also lost so much weight over the past year that he was just skin and bones. In the past week I have noticed that his eye is looking better- as I had hoped since hyperthyroidism affects the immune system- and he has gained enough weight that I can no longer feel every bone so distinctly. He is such a love and I am so glad that he’s feeling better!
Aerin A. 5/5 Verified
Our Salem is looking and acting better. She is 22 years old. She has only been on this supplement for a couple of weeks. She links the plate clean as I crush the pills and put them in gravy.. she was so weak she could not make it to jet favorite couch. She went back to her couch now. I wish I found this pills when my beautiful Blizzard (her daughter) was alive. But, thinking positive I think these pills are it. They will keep Salem going.
Anna D. 5/5 Verified
