Hi, I've been having hypo symptoms for the best part of a year now. I've been suffering from constipation,difficulty losing weight,dry skin,spots and feeling cold all the time. I went to get my thyroid checked and my tsh was 5.1 (0.5-5.5 range) and t4 was 15 (10-22) so after some research I started taking some vitamins,and I felt better instantly!no more constipation,no more dry skin or feeling cold, I even began losing weight!! So I went back to the docs and my tsh had went down to 2.1 and my t4 was at 16! This was great,but when I ran out of vitamins I thought I was better so when I ran out I didn't buy more. Three weeks passed and my symptoms returned I went out and bought some more vitamins but they did nothing for me. I went back to the docs a few weeks after that and tsh was up to 5.7 and t4 was 14. The dr suggested I give my vitamins another try and guess what all my symptoms disappeared again! So I went on holiday for a week and forgot them,my symptoms have returned and I'm taking them now and they are not helping! Why is this happening? Why would they help at first then after a short break stop working?im utterly confuddled! Any one got any ideas?