NOW Thyroid Energy combines iodine (from potassium iodide) and free-form L-tyrosine, nutrients the body uses to synthesize thyroid hormones, alongside selenium, zinc, and copper as supporting cofactors for normal thyroid function.
The formula also includes organic kelp, Irish moss, a guggul extract standardized for guggulsterones, and an ashwagandha root extract. It's made without wheat, gluten, soy, milk, egg, fish, shellfish, tree nut, or sesame ingredients.














