Since 1969 Whole Thallus Plant-Based Iodine Certified Authentic Tru-ID Non GMO Project Verified 580 mg Per Serving Dietary Supplement Vegan Plant-Based IodineAt Nature's Way, we believe in quality you can trust. So, we start by sourcing botanicals from the place the grow . Then we use three distinct levels of scientific testing methods to ensure ingredients meet our uncompromising standards. Look for the Tru-ID logo to find products certified for authenticity by independent, third-party testing. Suggested use Take 1 capsule daily. Do not exceed recommended dose. Other ingredients Plant-derived capsule (hypromellose). Gluten free. No sugar, salt, yeast, wheat, soy, corn, dairy products, or artificial colors, flavors, or preservatives. Warnings This product should not be taken by individuals with know hypersensitivity to iodine or hyperthyroidism. If pregnant nursing, or taking any medications, consult a healthcare professional before use. Keep out of reach of children. Safety sealed with printed inner seal. Do not use if seal is broken or missing.