Hi there- any feedback would be great. I am on day 5 of 1 grain NDT- up to now I have been on 100mcg of T4 Levo. I thought all was going OK...re the change over..but tonight at teatime...started to feel really tired and a headache....hoping this is going to be my change of life and moving forward...as on T4 I had all my hypo symptoms even though I was normal. Been seeing Dr C since April. I have high cortisol at night and I am being treated with amytriptaline 10mg to lower.