Excellent source of iodine. Low sodium salt alternative. Thanks to our deep water kelp, you will more than meet 100% of your iodine RDA of 150 micrograms. A serving of 1/4 teaspoon f provide approximately 3 mg of iodine, or 20 times the RDA. Is that safe? Dr. David Brownstein, MD, thinks so. He regularly prescribes 6-12mg of iodine as a maintenance dose, and up to 50 mg to load the body until it teaches sufficiency and excretes 90%. In his book, Iodine, Why You Need It, he carefully analyzes and disproves the seven common concerns with using iodine above the RDA, showing in case after case history that the whole body benefits, while safely excreting excess iodine in the urine. We also know Asian cultures with high consumption of seafood and seaweed, average well above 150 mcg of iodine per day and show no ill effects, with markedly longer lifespans. If you are concerned about too much iodine, please consult your health practitioner. Otherwise, enjoy the wealth of nutrition this kelp brings you from the deep Atlantic. Certified organic by OCIA (US-BIO-663). Please re-use or recycle (No. 5) this canister. Thanks.