Has anyone on provigil had any any negative thyroid effect.  I have suffered extreme fatiue and other problems since I was assaulted on my  job and sufferefd a head injury. Been on this medication a couple years.  Helps with fatigue and organizational skills.  I has really hekped me to be able to do my job.  My doctor recently found a  nodual on my thyroid.  I am getting it tested and tests for thyroid function. Wondering if other folks have experienced any negative affects to thyroid or thyroid function after being on provigil or nuvigil and if you were able to address issues by thyroid medication, discontinuing provigil, or some other way.