A tea of chopped bladderwrack is often recommended by herbalists and naturopaths as a supplement for their patients with under-active thyroid. In Ireland, bladderwrack is used in their traditional seaweed baths. Just put a few handfuls of bladderwrack into the organza bag included with your order and let soak in the tub as you bathe.
This bladderwrack is intended for making tea and for use in the bath. It is not intended to be chewed because it grows on crumbly granite ledges, and it may contain gritty holdfasts.