Is it safe to eat bladderwrack powder?

Bladderwrack, a type of kelp, possesses many health benefits. It is rich in nutrients and has vitamin A, B-Complex, C, E, G, calcium, iodine, potassium, iron silicon, and sulfur. Bladderwrack is also used to treat thyroid gland and boost metabolism. It also works on reducing obesity. Bladderwrack powder lowers the risk of potential diseases like cancer, rheumatism and rheumatoid arthritis making it one of the most useful herbs.