I have Hashimoto's disease and have been taking levothyroxine 85.5 mg for 20 years. Merck has reformulated the drug and since then ( April) I have had important side effects: fatigue, memory loss, severe cramps, hair loss... I decided to stop taking the drug for 2 months ans see... after a week I feel so much better, I sleep well, and no more cramps... what do I risk by stopping ?