have taken 100mg for 2 years now. mY thyroid went down at the same time as my stroke. Fully recovered now from stroke, but levothyroxine having the opposite effect. Through taking levothyroxine, it is now causing all of the symptoms. Stopped taking it 11 days ago, feel so much better apart from the effects of the weight gain, constipation and severe insomnia which the levothyroxine caused all 3 in the first place. Not sure what steps to take now ?