Dulse LiquidDiscover Alcohol free Dulse Liquid provides a natural source of iodine, which is key to thyroid gland health. It also supports the immune system. Supports optimal thyroid gland activity and function. Provides immune system support. Provides 150% of the Daily Value of iodine per serving. How It Works How It Works Dulse is a type of red seaweed that grows on rocks at the low tide line in the North Atlantic and Northwest Pacific oceans where currents are