Manufactured In The USA - Our Selenium and Zinc Kit is manufactured in our own, state-of-the-art cGMP certified facility in Phoenix, Arizona. We pride ourselves on quality, which is why bottles come with a 1-year guarantee, produced in the USA. Vegan-Friendly - Our vegan safe formula is free of gluten, soy, dairy, GMOs, nuts, sugar, artificial flavors, synthetic dyes, & toxic fillers. Give your body the safest and most natural forms of ingredients to ensure proper digestion. Safe for all diets!. Potent Antioxidant Booster - Zinc and Selenium contain antioxidant properties that help with immune system support and your cell's defense against everyday "wear and tear". Help protect cells against free radicals to support thyroid health. Plant-Based Health - Enhanced bioavailability to maximize absorption of antioxidants and vitamins in Zinc; gentle and natural for your body. Supports body's ability to repair everyday "wear and tear" for healthy aging and normal cell growth & production. Thyroid & Immune System Support - High quality antioxidant with superior absorption to support healthy thyroid and immune system that's vital to keeping a normal metabolism. Once cleansed with Oxy-Powder, Selenium is vital is for free radical protection.