I have been on thyroid meds for years. It's just slightly sluggish and found my prescription medication just wasn't working for me anymore. I was gaining weight and it was getting out of control. Nothing I did helped. Exercising, dieting, nothing. So I read an article about sea kelp with iodine helping to regulate slightly low thyroid. I have noticed in the past week that my pants seem to fit better and I don't have to struggle to get into them anymore. The sea kelps cost is low and I'm very happy now.