Thyronorm Product Information

Thyronorm Questions

What conditions does Thyronorm treat?

Thyronorm is used for the stabilisation of hyperthyroidism in cats prior to surgical thyroidectomy or for the long-term treatment of feline hyperthyroidism.

How does Thyronorm work?

It contains Thiamazole which acts by blocking the biosynthesis of thyroid hormone in vivo. The primary action is to inhibit binding of iodide to the enzyme thyroid peroxidase, thereby preventing the catalysed iodination of thyroglobulin and T3 and T4 hormone synthesis.

How should I administer Thyronorm to my pet?

For oral use only.

The product should be administered directly into the mouth of the cat.

Do not administer in food as efficacy of the product when administered via this route has not been established.

People with known hypersensitivity (allergy) to thiamazole or one of the excipients should avoid contact with the veterinary medicinal product. If allergic symptoms develop, such as a skin rash, swelling of the face, lips or eyes or difficulty in breathing, you should seek medical attention immediately and show the package leaflet or label to the doctor.

This product may cause skin or eye irritation. Avoid eye contact including hand to eye contact. In case of accidental eye contact, rinse eyes immediately with clean running water. If irritation develops, seek medical advice.

Wash hands with soap and water after administration of the product and handling the vomit of or litter used by treated animals. Wash any spillages or spatter from skin immediately. Thiamazole may cause gastrointestinal disturbances, headache, fever, joint pain, pruritus (itching) and pancytopaenia (decrease in blood cells and platelets).

Avoid dermal and oral exposure, including hand-to-mouth contact.

Do not eat, drink or smoke while handling the product or used litter.

In case of accidental ingestion, seek medical advice immediately and show the package leaflet or the label to the physician.

Following administration of the product any residual product remaining on the tip of the dosing syringe should be wiped clean with a tissue. The contaminated tissue should be immediately disposed of.

The used syringe should be stored with the product in the original carton.

*As thiamazole is a suspected human teratogen, women of child-bearing age must wear non-permeable single use gloves when administering the product or handling the litter/vomit of treated cats.

If you are pregnant, think you may be pregnant or are attempting to conceive, you should not administer the product or handle the litter/vomit of treated cats. *

What is the correct dosage of Thyronorm for my animal's weight and species? 

The correct dose for your animal is as prescribed by your vet. Your vet will follow the data sheet for the medication prescribed and for some medications will adjust this taking into consideration your animal's medical history.

How long should I continue with Thyronorm for?

You should continue for the length of time your vet prescribed the medication for. Please read the label your vet has attached to the medication. If you suspect that your pet may be having an adverse reaction to a medication, please contact your vet for advice on continuing the medication.

What should I do if I miss a dose of Thyronorm?

If you miss a dose of medication, please contact your vet for advice on when to give the next dose.

Where can I buy Thyronorm?

You can purchase Thyronorm cheaper than your Vet Practice from www.vets4u.uk. To contact vets4u.uk, call us on +44 116 218 4244 between 09:30am and 4:30pm Monday to Friday, chat to us directly or email us at mail@vets4u.uk

Does Thyronorm need a prescription?

Yes, as it is classified as a POM-V.

How can I buy Thyronorm from Vets4u?

You can buy Thyronorm via our website via a valid prescription by adding to the basket on our website www.vets4u.uk.

Manufacturer’s Link to Thyronorm

Norbrook Labs - Thyronorm

NOAH Compendium Datasheet Link to Thyronorm

NOAH Compendium Thyronorm Datasheet

How long does Thyronorm take to work?

This varies between individuals. Blood tests need to be done after 3 weeks to check if the level of drug administered needs adjusting. More than one adjustment may be required. Once the level is in the therapeutic range changes should be seen within a few weeks such as weight gain, and sometimes sooner.

How much Thyronorm should be given?

The dose should be as prescribed by your vet.

How to administer Thyronorm to cats?

Give it orally, directly into your cat’s mouth. Its efficacy has not been tested when given with food according to the datasheet for the drug.

How to decide Thyronorm dosage?

Your vet will decide on the dose depending on blood tests and your cat’s individual health, and adjust it as needed.

How does Thyronorm work?

It blocks the synthesis of thyroid hormone by binding of iodide to the enzyme thyroid peroxidase preventing catalysed iodination of thyroglobulin and T3 and T4 synthesis.

Can Thyronorm be given with food?

The datasheet says that it should not be, as the efficacy has not been proven when given with food.

Answers Compiled by our RCVS Registered Veterinary Surgeon.