Thyroid UK
90,518 members104,886 posts

i am on a 100mg thyroxine,since last April i have been up and down from 75-100 in the space of 6 weeks having blood tests every 6-8 weeks

still not right either t3 to high or to low.putting on weight despite being on a diet and going to gym 4 times a week,feeling like im getting no where fast,asked to see a specialist but been told it wouldn't do any good,due to have another blood test on the 22nd, help anyone in the same position.

4 Replies

Please clarify. Are you on thyroxine (T4) or T3??? or both?


no not on either


Your post says you are on Thyroxine which is T4 but your reply to Heloise says you aren't on anything ?

If you are on Thyroxine then it may be you are changing dose to quickly, there isn't enough time for your body to catch up with the new dose and having a blood test too soon will just show your body is confused and still trying to stabilise. It takes me 12 weeks to stabilise after a dose change, you just have to give it time.


sorry was confused,its had over a year still hasnt sorted its self out,still feeling like pulling my hair out,even my nails arent growing.


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