In regards to essential oils, there are many fabulous testimonials from those that healed their hypothyroidism using essential oils in addition to diet and supplements. A well known protocol for helping to reverse hypothyroidism is:

10 drops Myrrh, 10 drops Lemongrass, 2-3 drops Clove, and 2-3 drops Peppermint in a roller ball. Roll directly on thyroid area several times a day at first until you get results. Depending on symptoms, results could be more energy, hair and nail improvement, better sleep, etc. Continue to use once or twice a day untill you feel you are functioning normally, and then once in a while when you feel the need. However, do not stop any thyroid medication without the consent of your doctor.