Thyro-L (Levothyroxine Sodium) Powder for Horses, 453 g (1 lb) Jar

Thyro-L Powder is a specialized veterinary endocrine therapeutic formulated for oral administration in horses to treat hypothyroidism and support equine metabolic function. Containing the active synthetic thyroid hormone levothyroxine sodium (T4), this professional-grade preparation supplements deficient endogenous hormone levels to regulate cellular metabolism, energy utilization, skin health, and reproductive status. Because thyroid hormone supplementation profoundly impacts systemic metabolism, administration requires accurate diagnostic testing, precise weight-based dosing, and strict veterinary clinical supervision.

What Is Thyro-L Powder?

Thyro-L is a specialized veterinary hormonal compound formulated for oral delivery under professional veterinary supervision.

Active Ingredients and Formulation

• Active Component: Levothyroxine sodium at a concentration of 0.2% (delivering 12.6 mg of levothyroxine sodium per level scoop or approximately 4.4 mg per oz of powder). It acts as a synthetic analogue of the natural thyroid hormone thyroxine, regulating basal metabolic rate and systemic cellular activity.

• Vehicle and Presentation: Supplied as a palatable, stable powder packaged in a 453 g (1 lb) jar equipped with a measuring scoop designed for convenient daily feed admixture.

What Is It Used For?

Primary Veterinary Indications

• Equine Hypothyroidism Management: Routinely prescribed by equine veterinarians to correct confirmed primary hypothyroidism characterized by lethargy, poor hair coat, weight gain, and intolerance to cold.

• Metabolic Syndrome and Insulin Dysregulation Support: Utilized under clinical protocols as an adjunct therapy to assist in weight management and improve insulin sensitivity in horses suffering from Equine Metabolic Syndrome (EMS) or pituitary pars intermedia dysfunction (PPID).

• Reproductive Performance Support: Administered in specific breeding scenarios to support reproductive function and estrus regularity in mares.

Administration and Dosage Considerations

Route and Dosing

• Route of Administration: Administered orally by mixing the measured powder thoroughly into a small portion of grain or sweet feed to ensure complete consumption.

• Standard Equine Dosage Reference:

  • Hypothyroidism: Typically initiated at 0.5 mg to 1.5 mg per 100 lb (0.11 mg to 0.33 mg per kg) of body weight once daily, or as directed by your veterinarian based on pre- and post-treatment blood thyroid hormone (T3/T4) panels.

  • Metabolic Support: Dosing regimens for insulin dysregulation are established strictly by clinical trial protocols under veterinary oversight.

• Veterinary Supervision: Dosage titration, tapering schedules, and periodic blood level monitoring must be managed exclusively by a licensed veterinarian.

Important Safety Information

• Contraindications: Do not administer to horses with uncorrected adrenal insufficiency (hypoadrenocorticism), thyrotoxicosis, or known hypersensitivity to levothyroxine sodium. Use with caution in animals with pre-existing cardiovascular disease or diabetes.

• Side Effects and Precautions: Generally well tolerated when dosed correctly. Excessive supplementation can lead to signs of hyperthyroidism, including nervousness, excessive sweating, tachycardia, tachypnea, weight loss, and increased water consumption.

• Withdrawal Periods: Observe mandatory meat and milk withdrawal intervals established by regulatory authorities if treating food-producing equines intended for human consumption (typically several days, depending on regional regulations).

• Professional Guidance: Due to its systemic hormonal impact, use must be managed under direct veterinary clinical oversight.

Storage and Handling

• Store at controlled room temperature between 15°C and 30°C (59°F to 86°F), protected from moisture, excessive heat, and direct sunlight.

• Keep the jar tightly sealed when not in use to preserve potency.

• Keep securely out of reach of children, unauthorized individuals, and animals at all times.

Frequently Asked Questions

What is Thyro-L Powder used for?

It is a professional equine thyroid hormone supplement utilized to treat hypothyroidism, support weight management, and assist horses with metabolic syndrome and insulin dysregulation.

What is the active ingredient?

It contains levothyroxine sodium (0.2%), a synthetic thyroid hormone (T4) that regulates cellular metabolism and energy production.

How is Thyro-L administered?

It is administered orally once daily by mixing the measured powder into a small portion of feed following precise weight-based guidelines under veterinary supervision.

Order Rx Thyro-L Powder Online

Rx Thyro-L (Levothyroxine Sodium) Powder for Horses (453 g) is available for order through our platform subject to veterinary prescription verification and regulatory compliance. For assistance regarding prescription submission, stock availability, or secure shipping protocols, please contact our customer support team.