Hi, any views comments welcome. A brief history....i began to feel increasingly awful, usual stuff at first, shoulder and joint pain, fatigue, brain fog and depressed moods. Then it changed, and unusually for me I developed symptoms of IBS, acid reflux, even bile issues. Got very interested in the amazing information here and followed many links. I've been Hashimoto'd for about 10 years and been surviving (just) on a daily dose of 150 levoxythyroxine once weight had stabilized. With my recent troubles I knew I would hit the same brick wall as everyone else ... but I live in France and got hold of some cynomel. Having just tested blood I can see my T4 is over top end of range and my T3 at the very bottom of range. TSH is low at 0.2 but ideally the aim is 0.5. I am deficient in Vit D, B12 and zinc. From what I can tell ferritin and folate are in the top of the range. I am involved in an ongoing dialogue with GP, who fair enough has admitted she doesn't know enough to support me onto T4 + T3 medication so has put me on hold while she consults my ex endo. I can guess what will come back as my endo was entirely unable to acknowledge ANY negative symptoms once my TSH was below 1. So here's my dilemma, do I halve my Levo and substitute say a quarter of Cynomel to start with and see how I go...knowing I will alienate both doctor and endo, and probably find it difficult to rely on their help for blood test prescriptions thereafter, or do I treat the deficiencies first, starting with B12 and stick with the Levo hoping that a better level of vital vitamins and trace elements will start to improve my conversion from T4 to T3 ? For me the quick fix that the cynomel offers is hard to resist as I am feeling very bad particularly in the mornings. The suggestion I've seen here is that a bit of T3 can make you feel better in a matter of days. I've ordered all the supplements but they won't arrive until middle of next week and I assume a couple of weeks of high doses will be required before any improvement is felt. Does treating the deficiencies first make more sense as it leaves me with the T3 self medicating option if I still need it. Would like to know what anyone thinks especially if they have experience of dealing with poor conversion rates.