Abount a month i was tested and was told my TSH was 24. GP retested this week and I my TSH was 1/3. I have been on Levo for four weeks. Can this med have had such a dramatic effect in so short a time? I started on 50mg for four weeks and just went up to 100mg last weekend. I have all the symptoms of being HYPO and even though I had a good blood test last week, I do not feel any better. Aches, insomnia, exhaustion, sweats, inability to focus, forgetting simple things, tightness in the chest, tingling in the fingers, etc. I have a very demanding job (50 to 60 hours per week) and am finding it difficult to drag myself to work every day. If my TSH level is down to a normal range, shouldn't all these symptoms be gone?