The thyroid energy capsules of Now Foods improve the metabolism of the body and are useful for dealing with thyroid issues. They are full of minerals such as zinc, copper, and selenium which have varied health benefits for eyes, brain, bones and assist different bodily functions as well. They contain the Guggul extract which is an Ayurvedic herb which improves the digestive process of the body. ThIngredients: Supplement Facts Serving Size: 2 Veg Capsules Amount Per Serving % Daily Value Vitamin B-6 (from Pyridoxine HCl) 2 mg 100% Folate (as Folic Acid) 400 mcg 100% Vitamin B-12 (as Methylcobalamin) 60 mcg 1000% Iodine (from Potassium Iodide) 225 mcg 150% Zinc (from L-OptiZinc? - Zinc L-Methionine Complex) 25 mg 167% Selenium (from L-Selenomethionine) 50 mcg 71% Copper (from Copper Amino Acid Chelate) 1 mg 50% L-Tyrosine (Free-Form) 1 g (1,000 mg) ? Guggul (Commiphora mukul) (Gum Resin) Standardized Extract (min. 2.5% Guggulsterones) 75 mg ? Ashwagandha (Withania somnifera) (Root) Standardized Extract (min. 2.5% Withanolides) 50 mg ? * Percent Daily Values are based on 2,000 calorie diet. ? Daily Value not established. Other Ingredients: Cellulose (capsule), Cellulose Powder, Magnesium Stearate (vegetable source) and Silica.