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What is Vidalta?
Vidalta tablets for cats contain the active ingredient, carbimazole. Vidalta medication is licensed for the treatment of hyperthyroidism in cats. Vidalta is a POM-V category medicine that is only available with a written prescription from your vet. Online pet pharmacies are only able to supply this medicine upon receipt of the valid prescription.
How does Vidalta work?
As mentioned, vidalta contains carbimazole. After carbimazole is absorbed, it is converted to an active form: methimazole. Methimazole stops the enzyme responsible for the production thyroxine from working. Vidalta tablets for cats are usually given only once daily.
What is Vidalta used for?
Vidalta is used to treat a condition known as hyperthyroidism. Hyperthyroidism is a condition that tends to affect older cats (often older than 13 years of age) and is caused by an over production of the hormone thyroxine by the thyroid gland. In the cat, two thyroid glands are found in the neck, either side of the wind pipe (trachea). It is not possible to feel these glands in normal cats as they are very small and are hidden by soft-tissue structures in the neck.
In some cats, one or both of these glands will increase in size and start producing too much thyroxine. This causes cats to show a number of symptoms including: weight loss, increased appetite (polyphagia), increased frequency and volume of defaecation, increased drinking and urination (polydipsia & polyuria), hyperactivity: cats can become more agitated and restless, occasional vomiting and/or episodes of diarrhoea, high heart rates, high blood pressure which may cause problems with vision and poor coat quality.
Very occasionally, cats may show symptoms including depression, lethargy and breathing problems.
If your cat shows some of the symptoms of hyperthyroidism, you should visit your vet who will perform a thorough examination, take a blood sample and may arrange blood pressure testing. In the majority of cases of hyperthyroidism, the thyroxine (or T4) result will be elevated. Your vet will also usually check the renal and liver values for any evidence of kidney or liver problems before starting treatment. If you and your vet decide to use Vidalta tablets for the control of hyperthyroidism in the long term, your vet may wish to collect occasional blood samples to test the level of thyroxin within your cat’s blood stream. Occasionally the level may be too high or too low and adjustments in dose may need to be made. Your vet may also check the cat’s renal values (urea and creatinine) to ensure that the kidneys are coping well with the treatment regime. Occasionally vidalta will be used to stabilise cats for around one month prior to surgery (thyroidectomy). This is an important step and ensures that your pet is well-prepared to undergo surgery. It is important that every dose is given.
How is Vidalta administered?
Vidalta is administered orally. The medication should be kept out of reach of children and anyone handling the medication should wear gloves. In addition, vidalta tablets for cats should never be crushed up.
Vidalta is available as reddish/pink-tinged cylindrical tablets in strengths of 10mg and 15mg.
A Veterinary Prescription is Required for Vidalta