From the Manufacturer:
Kelp contains the complete spectrum of minerals needed by man, as they are contained in the ocean itself. Aside from the fact that sea water as such is a veritable treasure trove of minerals, land minerals are constantly washing into the sea, enriching it still further (Ibid.). Even more important than the minerals needed in relatively large amounts, such as calcium, iron, phosphorus, potassium, and so forth, are the trace minerals--iodine, copper, manganese, boron, zinc, etc. These minerals appear in minute quantities in food. Our bodies need only microscopically small amounts of them. Yet if that tiny amount is not there, we can die from the lack. One of the most important trace elements in Kelp is iodine. This mineral is essential for the proper functioning of the thyroid which manufactures the hormone thyroxin. If an adequate amount of iodine is not provided in the diet, the thyroid gland is forced to work overtime and becomes enlarged in an effort to make up for the deficiency. This enlargement is known as goiter. Kelp is a much better source of iodine than the much-touted iodized salt, which is chemically isolated sodium chloride to which potassium chloride has been added. Most of us should not take as much salt as might be needed to supply the needed amount of iodine. Kelp is the ideal source of iodine. To get the daily requirement of 100 micrograms of iodine estimated as the requirement for human beings you would need to consume: 10 pounds of fresh vegetables and fruits, or 8 pounds of cereals, grains and nuts, or 6 pounds of meat, fish, fowl, or 2 pounds of eggs, or 3 pounds of marine fish, or .2 pounds of shellfish. Used as a condiment, Kelp could supply easily the amount required; it contains 10 times as much iodine as American iodized salt (RodC:7 16). 100% vegetarian capsules.