Re: how many grains should i take?
This isn't a self-treatment kind of board.
The fact is, there's nothing in your TSH alone that proves you're hypothyroid. You need free T4 and free T3 tests, too. I realize you're in the UK and can't get them from the NHS, but asking us to help you treat yourself is asking us to help you give yourself a stroke or heart attack. None of us wants that.
"We can complain because rose bushes have thorns, or rejoice because thorn bushes have roses." Abraham Lincoln