When does levothyroxine start to work?

[missymystique]

I started levothyroxine 50mg (my TSH was 5.7) a week ago so far haven't seen many changes.

How long does it take to see some effects?

[shaws Administrator]

It will take several months for you to get the the right dose for you. A blood test should be taken around every 4 to 6 weeks and an increase given. It probably takes years for us to become hypo so therefore it is a slow process to build up the dose. I hope you don't have a GP who relies on the TSH to indicate the amount of medication, it should be how you feel that dictates the amount.

When you have a blood test for the thyroid gland, don't take medication on the morning of the test, which should be as early as possible and get a print-out of your blood tests with the ranges.

[harleychick]

It takes a few weeks to a month