Levothyroxine Dosage Problems: Hi, about a year... - Thyroid UK

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Levothyroxine Dosage Problems

SovietSong profile image
22 Replies

Hi, about a year ago while on 150mcg daily I experienced tiredness,joint and muscle pain,headaches,ear pain.My GP dropped my dose to 100mg and up until two weeks ago all was well but suddenly all the above mentioned symptoms have returned with a vengeance along with diarrhoea/constipation, trouble sleeping and just generally feeling unwell.Had bloods done on Tuesday and was surprised when ringing the surgery for results to find that levels were normal.I always take the meds first thing, at least an hour before eating /drinking.Maybe coincidental but am usually given 3 months meds at a time and was about 2 weeks into the final box when I started getting the symptoms.Could there be slight diff in the packs?I don’t always pick my meds up from same pharmacy, could that also be an issue?

Would like to hear from anyone else with similar experience.Any advice would be greatly appreciated.Many thanks in advance.

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SovietSong
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22 Replies
Jazzw profile image
Jazzw

What are the blood results that are being described as “normal”? Do you have a copy of them?

My guess is that you have a GP who believes that having results within the laboratory reference range means everything is fine—that’s often not the way it goes.

See if you can get a print off of the results. If in the UK you can ask your doctor’s receptionist to do that for you—or you may have access to your health records through an app?

SovietSong profile image
SovietSong in reply to Jazzw

Many thanks for the reply Jazzw.No I don’t have a copy of my results.I think I will have to start getting print offs though.In my ignorance I just assumed when told that levels were normal that everything was fine and dandy.I did feel at the time though that my drop in dosage from 150 down to 100 was quite a big one.

Sparklingsunshine profile image
Sparklingsunshine in reply to SovietSong

Hi

It's no recommended to add or drop Levo by more than 25mcg at a time. I think you really need to get hold of your bloods. In range doesn't mean optimal.

Jazzw profile image
Jazzw in reply to SovietSong

It was. And yes—please get them. I know we should be able to trust that our doctors will treat us appropriately but so many of them hardly even know the basics about hypothyroidism.

Buddy195 profile image
Buddy195Administrator

Jazzw is so right, do phone or email your GP & ask for a print out of all your thyroid blood tests (with ranges- as labs can vary).

What GPS say is ‘within range’ may not be ‘optimal’. So many members here would be very poorly indeed if they didn’t monitor their own health and thyroid levels. If your GP won’t test Ft3 and Ft4, I’d suggest looking to do this privately (as many members do).

thyroiduk.org/help-and-supp...

SlowDragon profile image
SlowDragonAdministrator

Strongly recommend getting full Thyroid and vitamin testing done

To drop dose levothyroxine by such a large amount is verging on sadistic

Even 25mcg drop per day is frequently far too sudden

You are legally entitled to printed copies of your blood test results and ranges.

Suggest you get hold of copies of your results when on 150mcg levothyroxine

Just testing TSH is completely inadequate

The best way to get access to current and historic blood test results is to register for online access to your medical record and blood test results

UK GP practices are supposed to offer everyone online access for blood test results. Ring and ask if this is available and apply to do so if possible, if it is you may need "enhanced access" to see blood results.

Link re access

healthunlocked.com/thyroidu...

In reality many GP surgeries do not have blood test results online yet

Alternatively ring receptionist and request printed copies of results. Allow couple of days and then go and pick up.

Important to see exactly what has been tested and equally important what hasn’t been tested yet

Bloods should be retested 6-8 weeks after each dose change or brand change in levothyroxine

For full Thyroid evaluation you need TSH, FT4 and FT3 plus both TPO and TG thyroid antibodies tested.

Very important to test vitamin D, folate, ferritin and B12 at least once year minimum

What’s the reason for your hypothyroidism

Have you had thyroidectomy or RAI for Graves’ disease?

Or autoimmune thyroid disease

About 90% of primary hypothyroidism is autoimmune thyroid disease, usually diagnosed by high thyroid antibodies

Autoimmune thyroid disease with goitre is Hashimoto’s

Autoimmune thyroid disease without goitre is Ord’s thyroiditis.

Both are autoimmune and generally called Hashimoto’s.

Low vitamin levels are extremely common when hypothyroid, especially with autoimmune thyroid disease (Hashimoto’s or Ord’s thyroiditis)

20% of autoimmune thyroid patients never have high thyroid antibodies and ultrasound scan of thyroid can get diagnosis

In U.K. medics hardly ever refer to autoimmune thyroid disease as Hashimoto’s (or Ord’s thyroiditis)

Recommended on here that all thyroid blood tests early morning, ideally just before 9am 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. Watch out for postal strikes, probably want to pay for guaranteed 24 hours delivery

Link about thyroid blood tests

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

Link about Hashimoto’s

thyroiduk.org/hypothyroid-b...

Symptoms of hypothyroidism

thyroiduk.org/wp-content/up...

SovietSong profile image
SovietSong in reply to SlowDragon

Yes RAI for graves disease.

SlowDragon profile image
SlowDragonAdministrator in reply to SovietSong

So likely with Graves’ disease to have low vitamin levels.

Essential to test vitamin D, folate, ferritin and B12

Come back with new post once you get historic results and new test results done

SlowDragon profile image
SlowDragonAdministrator

On morning of any blood test you should not take your levothyroxine until AFTER Blood test

Come back with new post once you get FULL thyroid and vitamin results and ranges

elwins profile image
elwins

I always get copies of my blood tests, keep them for future reference. my doctors surgery are very good at printing them off for me.

pennyannie profile image
pennyannie

Hello SovietSong and welcome to the forum :

It is vital that you are dosed and monitored on your T3and T4 blood tests results and not a TSH though fully understand that in primary care a TSH might be the only test run with maybe a T4 once in a while :

Once on any form of thyroid hormone replacement the TSH seen in isolation says nothing, especially the longer you are on the medication and especially since you have had RAI thyroid ablation for Graves and/ or do not possess a thyroid !!!

Your HPT axis - the Hypothalamus - Pituitary - Thyroid feedback loop that the TSH relies on is broken as your thyroid is not there any longer to complete this loop.

We generally feel at our best when out T4 is in the top quadrant of the range as this should, in theory, convert to good level of T3 and it is T3 that runs the body - not T4 - Levothyroxine.

T4 - Levothyroxine is a pro hormone, a storage hormone and needs to be converted by the body into T3 the active hormone said to be around 4 times more powerful than T4 :

Your ability to convert the T4 into T3 can be compromised by non optimal levels of ferritin, folate, B12 and vitamin D - and inflammation and any physiological stress ( emotional or physical ) or dieting, depression and ageing will also negatively effect T4 to T3 conversion.

The thyroid is a major gland and responsible for full body synchronisation including your physical, mental, emotional, psychological and spiritual well being, your inner central heating system and your metabolism.

A fully functioning working thyroid would be supporting you daily with trace elements of T1. T2 and calcitonin + a measure of T3 said to be at around 10 mcg + a measure of T4 said to be at around 100 mcg.

Some people can get by with T4 only :

Some people find that they feel better adding back in that little bit of T3 you lost when their thyroid was disabled - making a T3/t4 combo of medications :

Some people can't tolerate T4 and need to take T3 only - Liothyronine.

Whilst others find their health restored better taking Natural Desiccated Thyroid which was used successfully for over 100 years and the original treatment for hypothyroidism, and derived from pig thyroids, dried and ground down into tablets referred to as grains and which contains all the same known hormones as that of the human thyroid gland.

Graves Disease is an auto immune disease and as such for life, there is no cure.

You might like to read around Graves Disease - elaine-moore.com

All that has happened is that you have been flipped from hyperthyroid to hypothyroid which is said to be better treated in primary care.

I deeply egret having had RAI thyroid ablation for my Graves back in 2005 and believe this toxic substance should be removed as a treatment option for Graves Disease - details on my profile page - if interested.

You might like read the latest research -

ncbi.nlm.nih.gov/pubmed/306...

pubmed.ncbi.nlm.nih.gov/338...

silverbelle51 profile image
silverbelle51

When I was beginning to investigate my problems back in 2017 I learned something that surprised me and that was all the Levo meds were made by one of 2 manufacturers in China no matter what the brand name was. Just what I learned.

helvella profile image
helvellaAdministratorThyroid UK in reply to silverbelle51

I think this is not the case.

In the EU, USA and UK, the documentation (Patient Information Leaflets or equivalent) have to list the manufacturer(s).

We can see numerous locations - Brighton, Barnstaple, Wrecsam, Croatia, Germany, Spain, Italy, India, Russia, Belarus, Poland, Netherlands, Brazil, Canada, Switzerland, Greece, France, Turkey, Sweden, Japan, Bulgaria, Pakistan, Bangladesh, Philippines, Mexico, Finland, Ukraine, USA, Puerto Rico, Austria, and others.

By far the majority of those products have different formulations, different dosages, different physical tablets (size, shape, colour, markings), packaging, etc.

The idea that two manufacturers in China manufacture all these variations appears extremely unlikely to me. To the extent I think we can dismiss the idea of finished tablets being made only in China.

What we cannot readily identify is where the ingredients come from. Whether Active Pharmaceutical Ingredients or excipients.

However, I can find a list of companies that are claimed to be suppliers of Levothyroxine sodium API. How complete, how accurate, I cannot tell.

pharmacompass.com/manufactu...

silverbelle51 profile image
silverbelle51 in reply to helvella

I respectfully disagree. The head quarters of the manufacturing company and where product is actually made are very often not the same location. Pharmacompass is located in New Delhi, India, the headquarters that is , but where product are made may not be the same. Like here in the U.S.A. we have soda brands and manufacturers who own them, but are bottled elsewhere by a bottler. Here in NE it is Polar who is a major bottler of too numerous to mention brands . Manufacturers contract out production of said product.

helvella profile image
helvellaAdministratorThyroid UK in reply to silverbelle51

I suggest you complain to the MHRA and the FDA that all manufacturers' PILs are inaccurate and need to be corrected.

Pharmacompass is not a good source (and I acknowledged that) but there are few accessible sources for suppliers of APIs. It does identify API companies in several countries which at least to some extent tie up with what we know/are told. I did not point them out as suppliers - just a company that maintains lists.

The difference between the distributor/licence holder and manufacturer is taken into account. For example, in the UK, Advanz Pharma levothyroxine products are manufactured by a contract manufacturer called Custom Pharmaceuticals, in Brighton. We know they are a real company, with real factories. Wockhardt in the UK manufacture at their own plant in Wrecsam. There is no doubt whatsoever that it exists and is a real company.

I have listed by manufacturer location - not brand owner/distributor/licence holder.

I have found some more information and found UK-specific Levothyroxine sodium API manufacturing companies:

UK API 42785 ACTIVE PHARMA SUPPLIES LIMITED

ACTIVE PHARMA SUPPLIES LIMITED, UNIT 2, FORWARD INDUSTRIAL ESTATE, TALBOT ROAD, LEYLAND, PR25 2ZJ, UNITED KINGDOM

03/05/2022

UK API 24 COURTIN & WARNER LIMITED

COURTIN & WARNER LIMITED, UNIT F, MALLING BROOKS, BROOKS ROAD, LEWES, BN7 2QG, UNITED KINGDOM

08/04/2022

It would be interesting to know where it is said that there are only two manufacturers in the world?

Gingernut44 profile image
Gingernut44 in reply to helvella

Just wanted to say Wrexham, unless Wrecsam is the Welsh spelling. 🫢

SeasideSusie profile image
SeasideSusieRemembering in reply to Gingernut44

Yes, Wrecsam is the Welsh spelling 😊

helvella profile image
helvellaAdministratorThyroid UK in reply to Gingernut44

I'd noticed the elevation to city status recently often used, or at least mentioned, the Welsh spelling - and thought I'd follow suit! :-)

jgelliss profile image
jgelliss

Strength and Sympathy for you. If you felt better when you where dosing with 150 mcg T4. Except that you had experienced a few symptoms but otherwise your symptoms where resolved.I would try splitting the 150 mcg T4 weighing the larger portions in the AM either dosing in the afternoon with the remainder T4 or just before going to sleep.Your Dr lowering your dose from 150 mcg to 100 mcg dropping your dose by 50 mcg shows me that he does not know /understand how to dose thyroid patients. If he felt that you needed lowering your dose then the next step should have been lowering your dose to 137 mcg after six weeks if that was still not working then the next lower dose should have been 125 mcg T4 . If that dose after six weeks proved to still be high then going to 112 mcg T4 should have been tried. Lowering your dose from 150 mcg to 100 mcg was very irresponsible of your Dr. This Dr just set you up for thyroid dose failure. Which you now know yourself.

Best wishes .

Aurealis profile image
Aurealis

Go to your GP with your symptoms. How does GP propose to resolve them? That’s the GPs job. GP may prefer a higher dose for you than having to resolve all those symptoms another way. But stand firm - don’t accept a diagnosis of depression, or a prescription for anti- depressants. In future I’d suggest you never allow an adjustment of 50mcg. 25mcg is a big enough change. Think fine tuning a musical instrument, not topping a car engine up with oil :) 🙄

Dressagelovr profile image
Dressagelovr

It could be your body is withdrawing from the higher dose. A Dr. Baum mentions this in his book and states it can take a few months to stabilize.

Omze profile image
Omze

I don't know about ur results but graves patient post rai need much higher dose to feel good , usually just above the upper range of t4 , other than that no solution or pure T3

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