If you want to feel energized and well so you can live your best life, healthy thyroid function is key! A large seaweed that grows in cold, coastal ocean water, kelp is considered a superfood that helps support your thyroid. That's why Solaray offers our powerful Kelp 550 mg supplement. With a high nutritional value, kelp is especially known for its concentration of naturally occurring iodine. Proper iodine levels are essential to good health because your thyroid's primary function is to take iodine and convert it into thyroid hormones that play a major role in metabolism, growth, and development as well as regulating many body functions.Solaray Kelp is formulated to provide 550 mg of kelp and 400 mcg of folic acid to help support healthy thyroid function. Solaray Kelp is non-GMO, vegan and lab tested for potency, purity and identity.