North American Herb & Spice Raw Thyroset, a unique combination of wild kelp, herbs and L-tyrosine, is the natural way to supplement your diet with iodine, trace minerals, amino acids and antioxidants. This kelp, from the far northern oceans, is the highest grade possible, featuring natural iodine, sodium alginate and trace minerals. With tyrosine and wild spices, Raw Thyroset is an ideal supplement to a healthy diet.