top of page

Nature-Throid® (Thyroid USP) Tablets 


Nature-Throid® is an NDT drug that was first released (as Westhroid) in the 1930s, making it one of the first available medications for hypothyroidism. Nature-Throid® has a history of decades of safe use, and has never been involuntarily recalled by the FDA. Nature-Throid® is designated as hypoallergenic and is gluten-free. Nature-Throid® contains no artificial colors, artificial flavors, soy, yeast, egg, fish or shellfish, corn, peanut, or rice.


Manufacturer: RLC Labs

Manufacturer Website:

Prescribing information / Product Insert:

Inactive Ingredients and Excipients: Colloidal Silicon Dioxide, Dicalcium Phosphate, Lactose Monohydrate (trace amounts found in all Thyroid USP), Magnesium Stearate, Microcrystalline Cellulose, Croscarmellose Sodium, Stearic Acid, Opadry II 85F19316 Clear.

Social Media:


IMPORTANT NOTICE ABOUT SHORTAGES: If you prefer Nature-Throid and are having difficulty getting this medication as a result of the FDA, learn about custom-compounding using the active pharmaceutical ingredients (API) from Nature-Throid's manufacturer, RLC Labs. 

bottom of page