Levothyroxine is a synthetic thyroid hormone used to treat hypothyroidism. [Buy Levothyroxine now on Petco.](https://www.petco.com/shop/en/petcostore/brand/thyro-tabs) A prescription from your veterinarian may be needed to purchase.
Levothyroxine is used to treat hypothyroidism in dogs, cats, and horses.
Levothyroxine works by replacing the amount of thyroxine that the pet is missing.
Tablets: store at room temperature protected from moisture and light. Oral solution: refrigerate and use within 2 months. Shake oral suspension well before use.
Give the dose as soon as possible. If it is almost time for the next dose, skip the missed dose, and continue with the regular schedule. Never give two doses at once.
Chronic overdose will produce signs of hyperthyroidism.
Consult your veterinarian before using levothyroxine with any other medications, even vitamins and supplements. A high fiber diet may interfere with efficacy. The following drugs may interact with levothyroxine: * Amiodarone * Antacids * Antidepressants * Antidiabetic agents * Cholestyramine * Corticosteroids * Digoxin * Ferrous sulfate * Ketamine * Phenobarbital * Propylthiouracil * Rifampin * Sertraline * Sucralfate * Sympathomimetic agents * Warfarin
Safety in pregnant animals has not been determined, use only when clearly necessary. Therapy should be gradual for patients with concurrent diseases. Wash hands after administering tablets. Pregnant women should handle tablets with caution.
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