Posting here for traffic. My thyroid has been very sluggish for at least 17 years. TSH levels good, but the uptake levels are sub optimal. I e just come back from an appointment at a Hormone Clinic in London. All this time I've avoided thryoxine because I understand you can't stop once started. But I wonder if now is the time to try. Anyone else got a similar story? (Also having symptoms: losing hair, cold etc).