I have Hashimoto's thyroiditis. Since I started taking Levoxyl I am no longer fatigued or cold. My TSH levels stay between 2 and 3. However, I seem to be having memory problems that are getting worse. Also I have pain in my hands and feet and sometimes wrists and ankles. I have been tested for everything in the world and they have found nothing. I did not have this pain before the levoxyl, so I assume it is a side effect.