Bladderwrack is a type of seaweed. People use the whole plant to make medicine.
Bladderwrack is used for many conditions, but, so far, there isn’t enough scientific evidence to determine whether or not it is effective for any of them. It’s also important to note that it’s not safe to take bladderwrack by mouth.
Some people also apply bladderwrack to the skin for skin diseases, burns, aging skin, and insect bites.
Don’t confuse bladderwrack with bladderwort.