Increase in Levothyroxine: How long should it... - Thyroid UK

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Increase in Levothyroxine

Foggy73 profile image
5 Replies

How long should it take for me to notice a difference in how I feel when my Levothyroxine has been increased?

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Foggy73
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5 Replies
PinkNinja profile image
PinkNinja

Probably a week or two to notice any difference, depending on how much the increase was. It could take up to 6 weeks to feel the full benefit and possibly longer if there are more complicated problems that need to resolve.

Foggy73 profile image
Foggy73 in reply toPinkNinja

Thank you CarolynB.

Its a shame it takes so long, as I have high spirited, persistent 8 and 5 year olds and its the school holidays!!

I have been told to have bloods taken again in 3 months, so will have to wait that long before being increased again if Im still feeling awful.

pinklady756 profile image
pinklady756 in reply toPinkNinja

On increasing my levo I went back to GP after 5 weeks as I felt no better, soon after I started feeling better so full 6-8 weeks for full effect for me.

Foggy73 profile image
Foggy73 in reply topinklady756

Thank you pinklady756, I will have to be patient!! I havent felt this bad with symptoms for a couple of years

pinklady756 profile image
pinklady756 in reply toFoggy73

I was diagnosed 18 months ago and when levels were right I felt fine for about 9 months. Then symptoms came back with a vegenance, TSH had risen slightly & GP reluctantly let me increase levo 25mcg and it's taken a while but it did improve. I had private blood tests done and discovered I have anti-bodies & low B12 although technically in range, so have been taking supplements and have cut out gluten which has all helped tremendously! Fingers crossed you are feeling better soon.

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