Active Ingredients: Each tablet contains 0.4mg Thyroxine sodium

Manufacturer: Dechra

Prescription medicine: This is a prescription medicine. Please ensure that you have read the "Ordering Prescription Medicine" page before ordering this item. We require you to upload your veterinary prescription and post us the original. You will need to send your prescription to

PetPA Pharmacy

Reply Paid 91355

Tweed Heads NSW 2485

Australian legislation prohibits the advertisement of prescription drugs to consumers; therefore, we are unable to display any images of the packaging or provide you with more information regarding this prescription medicine. All prescription medicines on the Your Pet PA website are purchased through Veterinary Wholesalers the same as those used by your Vet. All our products are APVMA approved and identical to those used by your Veterinary Surgeon. Please call or email us if you have any queries about any of the products on our site.

Commonly asked questions about Thyroxine Tablets:

What are Thyroxine Tablets?

Thyroxine Tablets are a prescription medication for dogs that contains the drug Levothyroxine Sodium. Thyroxine is a replacement for the hormone T-4, which is naturally produced in the body by the thyroid gland to regulate metabolism and energy.

Why do cats and dogs use Thyroxine?

When the body is unable to produce enough thyroid hormone on it’s own because of an imbalance, an enlarged thyroid gland, or other medical conditions and treatments, it is called hypothyroidism. Hypothyroidism in dogs can be found with a blood test or by signs and symptoms involving metabolism, energy, nerve and muscle function, skin and haircoat. If your dog has been diagnosed with low thyroid hormone or hypothyroidism, your veterinarian may prescribe a Levothyroxine medication.

What else should I know about Thyroxine?

Dogs taking Levothyroxine require much higher doses than humans. Doses for cats may be similar to doses for humans. Your veterinarian may need to perform regular blood tests to check the dose of Levothyroxine in the blood. These follow-ups are very important.

What problems could my dog or cat have with Thyroxine?

Side effects from giving too much Levothyroxine include fast heart rate, greater appetite with weight loss, thirst, increased urination, excitability, or nervousness. Dogs may pant more. Cats may appear withdrawn, apathetic, or uncaring. Contact your veterinarian if you notice any of these signs.

How do you use Thyroxine?

Thyroxine can be given with or without food, but should be given in the same way every day to maintain a consistent level of Levothyroxine. Follow your veterinarian's directions.

What is in Thyroxine?

The drug in Thyroxine is Levothyroxine Sodium. Levothyroxine is a replacement for the hormone T-4, which is naturally produced in the body by the thyroid gland to regulate metabolism and energy.