Pet Weight/Medication Strength Vitality Member Price Non-Member Price
2.5mg $0.25/tablet $0.30/tablet
5mg $0.40/tablet $0.45/tablet


Cats with hyperthyroidism have a thyroid gland that is producing excessive amounts of thyroid hormones. This causes a dramatic increase in the body’s metabolic rate.

Hyperthyroidism occurs when the thyroid gland over-produces thyroid hormones. Your cat’s thyroid gland is located in its neck. It is divided into two parts, called lobes, which lie on either side of the windpipe (trachea).

When a cat has hyperthyroidism, either one or both of the thyroid lobes become enlarged (both lobes are affected in 70% of cases). This leads to excessive production of the thyroid hormones T4 (also known as thyroxine) and T3 (also known as triiodothyronine).

These hormones:

  • Are essential for proper growth of body cells and the development of these cells for specific roles in the body.
  • Help regulate the metabolism of protein, fat and carbohydrates by cells.
  • Are involved in the regulation of heat production and oxygen consumption and therefore a wide range of metabolic processes.

As a result, an excess of thyroid hormones affects the function of virtually every organ system.

Information on this medication quoted from dechra-us.com

* These medications are not for human consumption or application.
** Prices subject to change without notice. Please call pharmacy to check prices.