Welcome. Already a member? Click here to sign in.
New customer? Click here  to begin.
Free Shipping on orders over $39.00
Vet Approved PET Medications - for LESS...   @VetApprovedRx.com
Call Toll Free: 877.847.7389
Show me products used for:   Dogs   Cats    > All <


Thyro L Powder  Levothyroxine sodium powder supplement for horses.
Add this item to your cart:

Item# Size/Desc Qty Price
1 lb
Save $4.00!  
This item requires a RX
10 lbs
Item qualifies for FREE SHIPPINGThis item requires a RX

**Note: This product requires a veterinarian's prescription to purchase.At checkout you will need to provide your veterinarian's FAX or email address. We will then send him or her a prescription verification that he or she will need to sign and return before we can ship you this product.

Dosage: 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.


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

IMPORTANT KEEP OUT OF REACH OF CHILDREN Store at room temperature and protect from light. Avoid excessive heat 104°F.