But the most prominent one is Kombu Dashi. It has a high content of glutamic acid, magnesium, vitamins, fibre, iodine, and much more. Certified Halal. A study conducted by the Affiliated Hospital of Changchun University of Traditional Chinese Medicines Department of Medical Affairs investigated the effects of kombu against rheumatoid arthritis by evaluating the cell invasion process of the seaweed. Kombu is also used to prepare a seasoning for rice to be made into sushi. This iodine is a boon and a bane at the same time. Kombu is known for reducing blood cholesterol and hypertension. Log in, //