Calculating dose based on weight

[Esther52]

I feel as though I am on wrong dosage of Levi thyroxine considering am 112kgs 125 micrograms isn't working because I am still cold though extreme cramping has easened, it's still there in my limbs. My physician in Kenya is honest that she'll keep trying different doses until something works! Kindly assist

[greygoose]

You very possibly are on the wrong dose. But, it's nothing to do with your weight. That's not how it works.

Calculating a dose by weight is for people who've had a thyroidectomy, for their first dose after the operation. After that, it's adjusted by blood tests. Do you have a copy of your last blood test?

For people who haven't had a thyroidectomy, the protocol is simple. You start on a low dose - usually 50 mcg - and get retested after six weeks. Your dose is increased by 25 mcg, and you get a retest after another six weeks. And, you continue like that, with six weekly increments, until your symptoms are gone. The blood tests are a guide to make sure you don't go too far, because distinguishing between under-medication symptoms and over-medication symptoms, can sometimes be tricky.