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Felimazole Tablets 2.5mg
Simple steps for pet prescriptions
  • 1Get a prescription from your vet
  • 2Place your order with Pet Drugs Online
  • 3Attach a prescription and tell us about your pet, read more
  • 4Our vets will double check your order
  • 5Your order is dispatched right away
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Felimazole Tablets 2.5mg

This item requires a vet's prescription

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  • Vet price £0.42
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Prescription Info.
Service Reviews

Felimazole Tablets 2.5mg

What is Felimazole? Felimazole is for the treatment of hyperthyroidism in cats. It is supplied in 1.25mg, 2.5mg tablets and 5mg tablets and can be sold as individual tablets or packs of 100. Each strength tablet has a different colour sugar coating. The 1.25mg tablets are red, the 2.5mg tablets are pink and the 5mg tablets are orange.

Felimazole Tablets are a prescription item and will be sent once a valid prescription is received. Please follow the instructions given by your vet.

The active ingredient in Felimazole is thiamazole. This can cause haemoconcentration and therefore it is important to make sure your cat has access to plenty of drinking water.

What is hyperthyroidism? Hyperthyoidism (also known as overactive thyroid) is a condition that occurs when the thyroid gland begins to produce an excess amount of the thyroid hormone. Cats with hyperthyroidism tend to burn energy too rapidly and this can result in weight loss, despite the increase in appetite. This condition is very common in older cats.

Fortunately, the majority of cats that develop hyperthyroidism can be treated successfully and make a complete recovery.

The most common signs of hyperthyroidism are:

. Weight loss

. Increased appetite

. Increased thirst

. Increased heart rate.

The recommended starting dose for the long term treatment of hyperthyroidism is 5mg per day. The dose can then be split and a 2.5mg tablet can be given twice daily but your Vet will advise on what dosage is most appropriate for your cat.

Do not use in pregnant or lactating cats.

Do not use in cats with a hypersensitivity to thiamazole.

Do not break, split or crush tablets.

Do not handle without gloves if pregnant. Pregnant women should also not handle cat litter unless wearing gloves.

To check the most up to date information about this product, please read its Summary of Product Characteristics (SPC) on the Veterinary Medical Directorate’s (VMD) Product Information Database:

View summary of product characteristics (SPC)

For orders over £29 postage is free. For orders under £29 we charge £2.99 for postage

For Light items (under 2kg) our standard method is Royal Mail Second Class (there are a few exceptions, so if in doubt check our Delivery page).

To get it faster you can upgrade Light items to Royal Mail 1st Class or a Guaranteed Next Day Courier service, Saturday Courier or even before 12 noon services. There's a small fee, but if you're in a hurry they are worth considering. To qualify for next working day delivery, orders must be placed before 12 Noon Monday to Thursday. There is no standard Saturday courier delivery.

Heavy items weighing 2kg and more are sent via courier. If ordered before noon Monday to Thursday, Heavy items will be delivered next working day. Heavy items ordered after 12 Noon Friday, or anytime Saturday and Sunday will dispatched on Monday for a Tuesday delivery.

Please note that if you are purchasing a mix of Light and Heavy items at the same time, these will be sent separately. The Heavy items being sent by Courier, the Light items by Royal Mail Second Class.

All exceptions to these guidelines are noted in the product description.
For more information, view our Delivery page.

If you see the "prescription required" sign next to an item you’d like to order, it means the item can only be issued with a prescription. While you can add these items to your shopping cart and pay for them along with other non-prescription products, we can’t dispatch them until we’ve received a prescription.

Product reviews for prescription products are not allowed by the RCVS. But here is what our customers say about our service:

Service reviews have been compiled from 36970 customer reviews


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Fantastic product, our dog has taken to " gastro intestnal low fat " very well and she likes it. Delivery was very fast and the price was better that the vet's


Quickly received, thank you


Prices are well below the vets prices and with trouble free ordering and delivery!


Easy to order, quick delivery. But would be better if you could register more than 1 pet. Great service many thanks Gary


great - no problems at all


As usual, great service. Good price and would recommend


Fast reliable service, easy to use and far cheaper than buying from vets


Easy to use site and a lot cheaper than the vets!


The service is great it’s easy to order on line I think this is the third time I’ve used this online service will be using it again and again great value for money cheaper than the vets 👍

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