Dr Anthony Toft's book -
Understanding Thyroid disorders is now available to read online at http://www.familydoctor.co.uk/onlinebooks/Thyroid.pdf It is also possible to buy it online
at http://www.familydoctor.co.uk/index.html See below for latest links** as well as in bookshops and many chemist shops. ISBN: 1 903474 19 1
This book has helped many of us to persuade their doctors to increase their thyroid meds to a level where they feel well again. In particular see page 84:
"Judging the correct dose of thyroxineYour GP or thyroid specialist will usually prescribe a dose of thyroxine that raises the fT4 and TT4 to the upper part of the normal range and reduces the TSH level in the blood to the lower part of the normal range. Typical results would be a fT4 of 24 pmol/l or TT4 of 140 nmol/l, and a TSH of 0.2 mU/l.
In some patients, a sense of well-being is achieved only when fT4 or TT4 is raised, for example 30 pmol/l or 170 nmol/l, and
TSH low or undetectable. In this circumstance, it is essential that the T3 level in the blood is unequivocally normal in order to avoid hyperthyroidism."
Dr Toft also addresses the problem of generic thyroxine on pages 42 to 43: "Thyroxine is now manufactured in the UK by a variety of companies. This is known as generic thyroxine and, despite rigorous controls, doctors and patients have noticed from blood test results and from symptoms that there may be a variation in tablet strength between different manufacturers. For this reason, it is wise to insist that the same make of thyroxine is dispensed by
the pharmacist when you renew the prescription. If it is not possible to provide the same make, you should consider having a blood test some six to eight weeks after starting the new preparation."
The subject of
using T3 is mentioned positively on pages 43 to 44 in the section "Possible future treatment".
**UpdateSadly it's now only possible to read a small section of the book online and the links above are now out of date too.
The new links (Thanks Karmacookie for these

) are:
http://familydoctor.co.uk/understanding-thyroid-disorders.html if you want to buy the book
and
http://213.175.206.48/~familydo/media/upload/Thyroid%20sample.pdf to read a sample chapter.