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Methimazole Tablet

By Par Pharmaceutical Companies
(261 reviews)
Veterinary Diet Item
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Methimazole Tablet

By Par Pharmaceutical Companies
$0.12 Per Tablet
One-time purchase
$0.06 AutoShip & Save up to 50%
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Product Overview

Methimazole is a medication that is used to treat cats for hyperthyroidism. Veterinarians prefer this drug for treating overactive thyroids. This medication is not a cure, but a treatment.
Sold per tablet.
For use in cats.
Features of Methimazole:
  • Works as a preventative for heart failure, heart enlargement, and organ damage
  • Results can be achieved quickly after starting treatment
  • Often used prior to radioactive iodine treatments or thyroid surgeries
  • Protects kidneys for cats who are receiving cisplatin chemotherapy
  • Effectively treats hyperthyroidism symptoms
Hyperthyroidism takes place when thyroid hormones are overproduced by the thyroid gland. Methimazole controls or inhibits thyroid hormone production, which reduces hyperthyroidism symptoms.
Adverse reactions to Methimazole typically occur in the first 3 months of use and are often reduced when a smaller dose is initiated, slowly building to the full dose over the course of those 3 months. If your cat has any of the following reactions or any other unusual signs, speak with your veterinarian:
  • Bleeding
  • Bruising
  • Fever (103ºF or greater)
  • Drowsiness
  • Myasthenia gravis (trouble swallowing and severe muscle weakness), in rare instances
  • Signs of undiagnosed kidney disease
  • Lethargy
  • Vomiting
  • Decreased appetite
  • Liver issues (which may include vomiting, decreased appetite, lethargy, yellowing of the eyes, skin, or gums, dark urine, and facial itching leading to bleeding and/or scratching
This anti thyroid drug contains 5 mg of Methimazole
Immediately contact your closest emergency animal hospital.
Nursing mothers, pregnant women, and women who could become pregnant should always use gloves if they handle Methimazole tablets or the bodily fluids and/or litter of cats treated with this drug.
Single 5 or 10 mg tablet
GenPharm Inc, Par Pharmaceutical, Heritage or other generic brand
Cats with hyperthyroidism, also known as Graves disease, often have high metabolic rates and could show symptoms of thyroid problems, including:
  • Heart murmur
  • Labored breathing
  • Poor coat
  • Rapid heart rate
  • Irregular bowel movement and/or urination frequency
  • Increased thirst and/or appetite
  • Muscle weakness
  • Weight loss
Methimazole is not FDA approved for use in veterinary medicine; however, it is commonly accepted for veterinarians to use this medication in cats.
 
The usual dose in cats is 5mg per cat every 8-12 hours.
 
Blood tests are repeated every 3-4 weeks until the proper maintenance dose is reached, then blood testing is repeated every 3-6 months.
 
This medication is needed for life. If the medication is discontinued, the symptoms will reappear.
This anti thyroid drug contains 5 mg of Methimazole.
 
Other ingredients include: Lactose Monohydrate, Povidone, Talc, Croscarmellose Sodium, Magnesium Stearate, Corn Starch.

About This Product

Customer Reviews

4.9
261 reviews
5 253
4 8
3 0
2 0
1 0
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Marie S Verified Purchase
September 16, 2026

very good service

great.my cat has no problems taking them...couldn't do without them

Amy W Verified Purchase
July 9, 2026

Great med and great pharmacy!

This has helped my 18yo and he'll probably be on it for the remainder of his life. There is no facility within 3-4 hours that offers radioactive iodine tx. Plus the costs are now totally off the wall. Allivet is a super company to work with!

Vaneska S Verified Purchase
June 24, 2026

Hyperthyroidism in cats

The medication has helped my cat control her home levels and metabolism. She has gained weight and is a much healthier cat now.

Carol C Verified Purchase
January 31, 2025

Great Price & Service Methimazole Med

Already my kitty seems to be responding to this medication for her overactive thyroid which had her crying for food even after just eating. She shows up at more normal feeding time now. The cost for thus med at Allivet is a fraction what kitty's vet was charging. Customer service is tops too.

Anonymous Verified Purchase
November 26, 2024

My Pickle’s who is 11 has Hyperthyroidism of which he takes Methimazole for. It’s doing its job, his level’s are good! Thank’s for being there! Janice Mason

Lance B Verified Purchase
September 28, 2024

Our Roly Poly's metabolism was through the roof again. He already had thyroid surgery once to fix the problem and it was back to normal. But, somehow, the problem returned. He has been getting a 5mg Methimazole tablet with his breakfast and his dinner for several years now. He has slowed way down again and is back to normal. Giving him two pills a day for the rest of his life is a small price to pay to have our normal RP back!

Joe S
February 8, 2024

Getting my pet meds through Allivent is super easy and on time shipping. I would recommend Allivent to anyone that need to get meds for their pets. Good communication and seamless delivery. Thank you!

Lindsey
November 30, 2022

My cat Hank needs these pills twice daily. I'm so glad I found Allivet. I save A TON of money and Hank is doing great!

Rebecca H
November 9, 2022

Just what my kitty needed. Saved so much going through allivet.

David D Verified Purchase
May 24, 2022

I saved almost half!

Amberly W Verified Purchase
March 31, 2022

Always ships fast!

Pamela L Verified Purchase
February 22, 2022

My fur baby needed meds and Allivet is cheaper than getting them at the Vet.

Donna F Verified Purchase
February 14, 2022

lowest price by far

Elana C Verified Purchase
January 25, 2022

Is exactly what the doctor prescribed! I break in half and crush in cats food.

Robert S Verified Purchase
October 7, 2021

Definitely works for my Senior Cat

Marylou p Verified Purchase
September 23, 2021

so far the easiest website to maneuver

Christopher T Verified Purchase
August 27, 2021

Quick, easy and great prices!!

John K Verified Purchase
August 25, 2021

Keeps my buddy going.

Kim F Verified Purchase
August 12, 2021

Great service

Virginia C Verified Purchase
June 26, 2021

It was prescribed by our veterinarian. Having it shipped is quite convenient and arrived in a timely manner.

Sally W Verified Purchase
May 25, 2021

excellent product

JENNIFER C Verified Purchase
May 10, 2021

Just what my kitty needed and for a 3rd of the price from the vet office.

Dennisse R Verified Purchase
May 3, 2021

Purchase for my cat

Scott C Verified Purchase
May 3, 2021

Fast and easy service

Susan F Verified Purchase
May 3, 2021

Same - but much cheaper than what I got at vet office

Anne t Verified Purchase
May 3, 2021

I am traveling and my pet need the medicine from their doctor

Tammy M Verified Purchase
May 3, 2021

My Karma has a thyroid issue

Philip a Verified Purchase
May 3, 2021

the tablets are easy to order and reorder - alivet contacts the vet and takes care of the subscription

Robert S Verified Purchase
April 26, 2021

good service, good price

Erin H Verified Purchase
April 26, 2021

This product does a great job controlling my cats thyroid issues.

James W Verified Purchase
April 26, 2021

great value and ease of use.

Josie S Verified Purchase
April 26, 2021

Very cost effective, works great for my fur baby!

Scooter K Verified Purchase
April 19, 2021

This mfg’s version agrees with my pets digestion

Scooter K Verified Purchase
March 9, 2021

These work on my 14 year old cat! Good service

William F Verified Purchase
January 20, 2021

Good price and convenient home delivery

Michael J Verified Purchase
November 16, 2020

The price was very good and the medicine was received very quickly. Because i was running out they sent it 2 day shipping. I would highly recommend this site.

CATHY B Verified Purchase
October 29, 2020

Helps with my senior cats thyroid issues, he is acting more like himself after getting this medicine.

Lori V Verified Purchase
October 26, 2020

A lot less expensive than purchasing through the Vet.

Jean C Verified Purchase
October 15, 2020

My cat Blackie needs medicine too control is thyroid that's why ,I purchase Methimazole. The price Allivet charges is very reasonable compared to other pet sites. I would recommend Allivet to all my friends with pets. I have been a customer now for about a year and would not switch. I am very happy with the prompt and cheerful customer service I receive.

Marcia F Verified Purchase
October 12, 2020

Cost Savings and Convenience

Alma G Verified Purchase
October 2, 2020

Cost is much lower than pharmacy

Kate E Verified Purchase
October 1, 2020

I love not spending a fortune for my kitty’s prescription.. thank you..❤️..

CLIFFORD B Verified Purchase
July 31, 2020

keeps our cats healthy

Karen S Verified Purchase
May 18, 2020

This is an on going prescription with 2 of my cats, always handled quickly by Allivet couldn't ask for anything better,

Richard G Verified Purchase
May 5, 2020

Med needed for Hyperthyroid condition.

Julie B Verified Purchase
April 7, 2020

My cats have hyperthyriodism

Gretta E Verified Purchase
April 7, 2020

excellent

Suzy W Verified Purchase
April 7, 2020

Way less than at my vet

Scott D Verified Purchase
April 7, 2020

To keep my cat alive.

Lori B Verified Purchase
April 7, 2020

One of my friendly ferals Steely Dan has hyperthyroid. Since taking this medication he has maintained his weight and looks amazing.

Kevin F Verified Purchase
April 7, 2020

works great just have to split the tiny pills but it's easy with practice.

Debora C Verified Purchase
April 7, 2020

Friendly service, prompt service!

Inga Z Verified Purchase
March 3, 2020

I bought methimazole for my cat with hyperthyroidism. The pet clinic used to charge a lot for his meds. I was impressed by Allivet’s great prices and customer service.

Rodney S Verified Purchase
March 3, 2020

Great price

Jennifer K Verified Purchase
March 3, 2020

My cat has over active thyroid and needs this to keep her weight, she will die without the medicine.

George G Verified Purchase
March 3, 2020

I save 80% on my cat’s meds. Plus great service👏

Susan N Verified Purchase
February 6, 2020

Same meds/better price...auto ship when we need it refilled! What a wonderful service!

Barry B Verified Purchase
January 27, 2020

Great price!

Jackie G Verified Purchase
January 20, 2020

Very competitive price.

Robert S Verified Purchase
December 4, 2019

Price is much more reasonable than my vet. Service is fast.

Beth G Verified Purchase
December 4, 2019

It was easy, simple, and it comes right to my door!

Ana d Verified Purchase
December 4, 2019

Lily’s Thyroid Med. Lifesaver🥰🥰

Jody S Verified Purchase
November 21, 2019

My kitty baby has hypothyroid disease. My vet prescribed this in a compounded formula from a pharmacy which cost me $60 for one month. After I checked out alternatives I found Allivet and get the prescription without special compounding for 20% of that cost. Not only that, I order an increased dosage and break the pills in half so its even cheaper!! They ship quickly and you can put it on auto-delivery so you don't have to remember to get it. LOVE this dispensary. This is a long-term medication so it takes a while to see results and after one month I've already seen an improvement.

Attia S Verified Purchase
November 12, 2019

Saved my cat's life !!

Lisa F Verified Purchase
November 6, 2019

Best price is why I bought from Allivet and when I encounter a problem it is addressed promptly.

Karen m Verified Purchase
November 6, 2019

This product really works well my Maine Coon Cat. He was losing so much of his weight until we put him on this medicine. Slowly, he has beginning to gain his weight and mass up!

Alma G Verified Purchase
October 10, 2019

I like the cost. I would pay $50 for #60. At Allivet for #90 including S and H under $22.

Sarah H Verified Purchase
October 10, 2019

A fraction of the cost compared to the vet.

Constance J Verified Purchase
September 25, 2019

Quality is just like the meds from the vet.

Frank S Verified Purchase
September 23, 2019

great service

Nancy M Verified Purchase
September 23, 2019

Great price!

Jamie C Verified Purchase
September 17, 2019

Great shopping for my pet's meds for thyroid. Great prices and a $5 discount too.

Angie G Verified Purchase
August 23, 2019

I bought from Allivet because they are cheaper than my family veterinarian & its the same medicine so i bought a year supply. They're customer service is very nice & my order actually arrived a day early so that was very convenient because i didn't have to go buy a few more pills from the vet. Thank you Allivet, great job :)

Melanie M Verified Purchase
August 23, 2019

I have my cat's methimazole on auto order, which makes it easy and ensures I never run out.

Kathleen B Verified Purchase
August 15, 2019

Great service. Quick delivery.

Rachel W Verified Purchase
August 9, 2019

Cost savings

SANDI M Verified Purchase
July 31, 2019

My cat is gaining weight and looking great at a fraction of the vet's price for the same pills.

Eva-Lynn P Verified Purchase
July 15, 2019

My 19 yr old kitty has thyroid issues. This common, inexpensive medication works well, is not pricey, and Allivet gets it to us quickly.

Karen G Verified Purchase
July 10, 2019

Easier than driving to the vet’s office

Jennifer K Verified Purchase
July 8, 2019

Great service and follow up.

Skeeter P Verified Purchase
July 8, 2019

Fast shipment. It was very easy to order. So much cheaper than my Vet

CLIFFORD B Verified Purchase
July 2, 2019

GREAT PRICE

Alice N Verified Purchase
June 21, 2019

I have a 17 year old cat that has thyroid condition and needs to be on these meds but they were way too expensive from the vet so I heard about Allivet placed the order on line but needed my vets approval and customer service went the extra step and contacted my vet to get the prescription approved and WOW to my amazement the medication was a third of the price and had 2x more pills . Allivet"s customer service is outstanding they followed up with an email to advise me that the medication was approved and shipped and sent me the tracking #. Amazing company and customer Service

Krassimir B Verified Purchase
June 17, 2019

Cheaper that getting it from animal hospital

Kathy C Verified Purchase
June 14, 2019

Much better prices 😀👍🏻

Tina G Verified Purchase
June 12, 2019

Rambo's thyroid was way out of whack. His heart was fsiling and my Vet recommended Methimazole. His heart is better, almost normal and his thyroid is back in check.

Christopher A Verified Purchase
June 3, 2019

Best price and awesome service! Very happy after switching to Allivet, saving lots of money and not having to drive across town to pick up my kitty’s meds.

Gary G Verified Purchase
May 29, 2019

good service, good prices

Jamie E Verified Purchase
May 14, 2019

Cheaper than the vet.

John M Verified Purchase
May 13, 2019

Response was excellent and cost was reasonable for thyroid tablets. My cat will be on these for remaining of his life

Joni U Verified Purchase
May 9, 2019

Product seems to be doing the trick. I so appreciate the extra mile that the folks at Allivet showed during my most recent order when there was some confusion about my order - I was called and the person I spoke with was very helpful in making things right.

Darryl S Verified Purchase
May 7, 2019

Mica has an elevated thyroid, meds more great

Nancy v Verified Purchase
April 25, 2019

great service, awesome price on meds

Donna O Verified Purchase
April 11, 2019

Great deal, and great customer service!

Marjorie G Verified Purchase
April 9, 2019

I had to change my order the first time I used Allivet and it was very easy and the people were helpful. When the new order was confirmed by my Vet, the medicine came quickly. I will continue to use on autoship

Donna K Verified Purchase
April 8, 2019

Less expensive than the vet, reliable shipping

Carol G Verified Purchase
April 1, 2019

Affordable

Kathleen S Verified Purchase
April 1, 2019

Great service and prices!

Suzanne C Verified Purchase
March 18, 2019

When my boy, Vinnie, was first diagnosed with hyperthyroidism, his number was off the chart at 23. Four months later, it's down in the normal range. He stopped losing weight. I'm very satisfied with this product.

Ray B Verified Purchase
February 15, 2019

Price for this prescription is very high through our vet. Same exact product. Very happy with this purchase!

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