GP wants to lower my Thyroxine dose due to low TSH - Thyroid UK

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GP wants to lower my Thyroxine dose due to low TSH

Shazy-B profile image
10 Replies

Hi everyone

I hope you are all doing well. It’s been a while since I have had to post anything but yesterday I had a call from my GP as my TSH is showing as “low” at 0.19 I tried to explain that this is “normal” for me, although it is slightly lower than my last test.

I had this issue about 3 years ago (I think) and my previous GP (I changed practices last year) lowered my dose to 75mg from 100mg, I became quite ill, developed a whole load of new symptoms that I could only put down to the change so they put me back up to 100.

They have agreed to wait and test me again in 6 weeks, but did say it has gone out of range and they would be quite concerned if this was a prolonged state and wouldn’t want me to be overmedicated! My T4 is 20 which I tried to explain is a good indicator of where I’m at regarding dosage.

Any suggestions would be welcome, I just haven’t got the energy to start battling with them over this.

Thanks a million ☺️

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Shazy-B profile image
Shazy-B
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SlowDragon profile image
SlowDragonAdministrator

Just testing TSH and Ft4 is completely inadequate

If GP says " I have to reduce your dose because the guidelines say i can't let you have a below range TSH" .....

The first paragraph in the NICE (NHS) Thyroid Disease, Assessment and Management guidelines says :

nice.org.uk/guidance/ng145

"Your responsibility

The recommendations in this guideline represent the view of NICE, arrived at after careful consideration of the evidence available. When exercising their judgement, professionals and practitioners are expected to take this guideline fully into account, alongside the individual needs, preferences and values of their patients or the people using their service. It is not mandatory to apply the recommendations, and the guideline does not override the responsibility to make decisions appropriate to the circumstances of the individual, in consultation with them and their families and carers or guardian. "

onlinelibrary.wiley.com/doi...

If symptoms of hypothyroidism persist despite normalisation of TSH, the dose of levothyroxine can be titrated further to place the TSH in the lower part of the reference range or even slightly below (i.e., TSH: 0.1–2.0 mU/L), but avoiding TSH < 0.1 mU/L. Use of alternate day dosing of different levothyroxine strengths may be needed to achieve this (e.g., 100 mcg for 4 days; 125 mcg for 3 days weekly).

If Ft3 is not over range you’re not over medicated

When were vitamin levels last tested

What vitamin supplements are you taking

Do you have Hashimoto’s

Recommended that all thyroid blood tests early morning, ideally just before 9am, only drink water between waking and test and last dose levothyroxine 24 hours before test

This gives highest TSH, lowest FT4 and most consistent results. (Patient to patient tip)

Private tests are available as NHS currently rarely tests Ft3 or all relevant vitamins

List of private testing options and money off codes

thyroiduk.org/getting-a-dia...

Medichecks Thyroid plus antibodies and vitamins

medichecks.com/products/adv...

Blue Horizon Thyroid Premium Gold includes antibodies, cortisol and vitamins

bluehorizonbloodtests.co.uk...

Only do private testing early Monday or Tuesday morning.

Link about thyroid blood tests

thyroiduk.org/getting-a-dia...

Tips on how to do DIY finger prick test

healthunlocked.com/thyroidu...

Medichecks and BH also offer private blood draw at clinic near you, or private nurse to your own home…..for an extra fee

SlowDragon profile image
SlowDragonAdministrator

Looking at previous posts

healthunlocked.com/thyroidu...

You have Hashimoto’s

Tendency for low vitamin levels

Are you absolutely strictly gluten free

Are you still taking daily vitamin B complex

Remember to stop this 5-7 days before ALL blood tests as contains biotin

Instead take daily methyl folate instead

Shazy-B profile image
Shazy-B in reply toSlowDragon

Hi SlowDragon lovely to hear from you, I hope you’re doing well yourself?

I have had issues with recurrent low folate, my last test 2 months ago was 3, hence my GP recommended getting an over the counter 400mcg dose, so am currently taking 400mcg of methyl folate (Ethical Nutrition) which has brought my folate up to 8.1 within 6 weeks…which I’m delighted with ☺️

I am not strictly gluten free although I do try to limit my intake.

I am not taking any other supplements.

I am on a higher dose of HRT patch than previously on (Evorel 50)

SlowDragon profile image
SlowDragonAdministrator in reply toShazy-B

Well low vitamin levels suggest your Ft3 is low

Becomes a vicious circle

Low vitamins lead to poor conversion of Ft4 to Ft3

Low Ft3 results in worse vitamin levels

Low Ft3 and high Ft4 leads to low TSH

ESSENTIAL to maintain OPTIMAL vitamin levels at all times

Many (most?) thyroid patients on levothyroxine need to supplement vitamin D, magnesium and vitamin B complex continuously to maintain GOOD vitamin levels

Initially may need separate B12 as well

Strongly recommend getting FULL thyroid and vitamin testing at least annually

Likely you will need to improve vitamin D and B12, possibly iron/ferritin

There’s little point eating low gluten.

SlowDragon profile image
SlowDragonAdministrator in reply toShazy-B

400mcg of methyl folate (Ethical Nutrition) which has brought my folate up to 8.1 within 6 weeks…which I’m delighted with

Get FULL thyroid and vitamin testing done BEFORE changing to vitamin B complex

See exactly where vitamin D and B12 levels are

SummerDark profile image
SummerDark

When the GP tried to do this to me, on just a T4 and low TSH result, similar to yours, I pointed out that my T4 was still in range and my TSH was a signalling hormone. I felt well. They agreed to leave it, and retested in six months.

Newmummy82 profile image
Newmummy82

I now refuse to attend the NHS blood tests and have written a letter to my GP stating that testing just TSH is totally inadequate and I won’t be attending a blood test unless T4 and T3 is also drawn. (Which obviously they won’t do) My TSH is also suppressed and I share my private blood tests with the GP when they raise the issue along with a letter stating that whilst my TSH is suppressed my T4 & T3 are in range so I’m not over medicated and am feeling well. I also tell them that it’s totally normal to have suppressed TSH when on optimal thyroid hormone replacement!

StanleyThyroid profile image
StanleyThyroid

I have just had the same experience. I was on 150 and my T4 had gone to 28 (top of range out of range 22) and my TSH was almost 0. My GP dropped me to 100. 6 weeks later TSH was 0.69 but I was walking around with 3 layers on in summer and feeling cold and achy like I had COVID then it dawned on me it was my thyroid symptoms back. So I asked for my levo to go back up again and TSH was tested again now at 1.8. It needed a robust conversation to get it raised as I was in range but after it was escalated they have agreed to 125 on my argument it's not about ranges but how do you feel.

I know TSH is a poor measure, but it's what GPs are taught. Private tests are often ignored (though I will get mine done again in 8 weeks) and see how I am then. It's very frustrating and time consuming always going back into battle. All you can do is be armed with the facts and fight your corner. Certainly without the input of the excellent people on this forum I would still be stuck at 50 feeling rubbish.

SmallBlueThing profile image
SmallBlueThing

I agreed to cutting dose, despite trying to explain my low TSH was probably an artefact from when I was taking desiccated thyroid extract. A tough time leading up to my recent test. Beforehand I'd contacted GP and asked for free T3 to be added, but haven't got the results, yet. Message from practice to say an appointment had been booked for me with GP -- seven weeks away.

In the GP thyroid rule book it says that overmedication can cause heart issues, namely Atrial fibrillation. At my last blood test, not requested by me btw, I was at GP for something else, my T3 was actually tested!! Couldn't believe it. So YES they CAN do it. Coincidentally, the female practice nurse who was taking my blood was hypothyroid herself, so sympathised.She wanted to reduce my dose, as, like you my TSH really low, but I was pleased to see my T3 had risen. Has always been low. But, i've been really goid with my vitamins. I usually find, I put in my repeat prescription request online, for SAME dose, and it just gets put through! If I take lower dose, like you doesn't take long before i'm feeling crap! Depressed and constipated! Magnesium helps with that! Good luck. Think with GP'S it's just a lottery.

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