Dosage help! : Hi any help gratefully received... - Thyroid UK

Thyroid UK

137,936 members161,765 posts

Dosage help!

handbag99 profile image
1 Reply

Hi any help gratefully received:)

I have been taking NDT successfully for a number of years now-recently I had to change supplier due to shortages in supply.

I purchased NP Thyroid based on the dosage I was taking of Thyroid S from the original supplier.

Each tablet is 120mg & contains 76mcg T4 & 18mcg T3, I took 2 daily equating to 152mcg T4 & 36mcg T3.

After 3 months I had my bloods done & Free T3 went up from 5.0 to 7.41 (3.1-6.8)and free T4 went from 13.9 to 20.2 (12-22).

Hence I reduced dose by half a tablet and retested bloods 8 weeks later: Free T3 has dropped to 4.0 from 7.41 & Free T4 has dropped from 20.2 to 12.9.

To me this indicates that I need to increase dose as results are at lower end of reference range? I could try increasing by quarter of a tablet but even with a pill splitter the tablets disintegrate to powder when cutting them. Also surprised that half a tablet caused such a large drop in levels?

Not sure wether to stay in what I am in & put up with lower results-I am tired & have gained weight but manageable.

Thanks 😊

Written by
handbag99 profile image
handbag99
To view profiles and participate in discussions please or .
Read more about...
1 Reply
SeasideSusie profile image
SeasideSusieRemembering

Handbag99

Each tablet is 120mg & contains 76mcg T4 & 18mcg T3, I took 2 daily equating to 152mcg T4 & 36mcg T3.

So your tablets are 2 grain, so you were taking 4 grains NDT daily.

Reducing by half a tablet meant you reduced by 1 whole grain. That's a big reduction as normally when tweaking doses of NDT at the level you were taking one would adjust dose by 1/4 of a grain at a time.

Can you source a lower dose tablet so that you can tweak dose by a much lower amount?

You may also like...

Help - Levothyroxine dosage dilemma

could do? Could i cut a 25mg tablet in half and add that to my 75mg dose every other day? Your...

Help with T4 & T3 dosages

down to 175 due to not feeling well on that high of dose, it gave me high blood pressure and...

Help with results and dosage please

everyone is doing well. These are my most recent results from monitor my health labs. Dosage at the...

Help with labs and dosage please

everyone, I currently have no diagnosis and no help from doctors. I got some labs done privately...

Change in dosage HELP!

The GP says I must lower my Levothyroxine from 100 to 75 after I recent blood test. I am 5 ft 2 and...