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  • Thyro L Powder Equine Thyro L Powder Equine

Thyro L Powder Equine

by Lloyd Labs

5 2

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This product requires a veterinarian's prescription.

This Rx product can not be shipped to some states.



  • Powder formula
  • For use in horses
  • For conditions associated with low circulating thyroid hormone also known as hypothyroidism


Federal law restricts this product to use by or on the order of a licensed veterinarian. Active

Keep out of reach of children and pets


Store at room temperature and protect from light. Avoid excessive heat 104degF.



It is important to follow your Veterinarian's prescription instructions for your pet.

The suggested initial dose is 0.5 to 3.0 mg levothyroxine sodium T-4 per 100 pounds body weight 1 to 6 mg per 100 kg once per day or in divided doses. Response to the administration of Thyro-L should be evaluated clinically until an adequate maintenance dose is established. In most horses, this is usually in the range of 6 to 36 mg 1/2 to 3 level teaspoons total daily dose of T-4. Serum T-3 and T-4 values can vary greatly among individual horses on thyroid supplementation. Dosages should be individualized and animals should be monitored daily for clinical signs of hyperthyroidism or hypersensitivity. 


For oral dosing as directed by a veterinarian. Warning: Use with caution in animals with clinically significant heart disease, hypertension or other complications for which a sharply increased metabolic rate might prove hazardous. Use in pregnant mares has not been evaluated. 


Active Ingredient per pound (453.6 g):

Levothyroxine Sodium

0.22% (1,000 mg)

One level teaspoonful contains approximately 12 mg of T-4.

One level tablespoonful contains approximately 36 mg of T-4.

Teaspoon measure included.

Additional Information

Is Rx Product Yes

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