Enlarged goitre upon starting levothyroxine. - Thyroid UK

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Enlarged goitre upon starting levothyroxine.

Kg147 profile image
18 Replies

Hello,

Thank you very much for all of your help with my last question. I have since seen an endocrinologist who plans on carrying out a full hormone profile to test for PCOS re acne. He also started me on 25 mcg levothyroxine as a trial.

I started the levothyroxine 3 days ago (taken in the morning 30 minutes before food), but have since noticed a "goitre". Is this a normal phenomenon once commencing levothyroxine. I wasn't sure as it's such a low dose.

Although the endo said I do have the antibodies present for hashimotos, my thyroid function is actually okay, hence the "trial".

Thank you!

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SlowDragon profile image
SlowDragonAdministrator

Starting on too low a dose of levothyroxine can make symptoms worse

Standard starter dose of levothyroxine is 50mcg, unless over 60 years old

Bloods should be retested 6-8 weeks after each dose increase

For full Thyroid evaluation you need TSH, FT4 and FT3 plus both TPO and TG thyroid antibodies tested. Also EXTREMELY important to test vitamin D, folate, ferritin and B12

Low vitamin levels are extremely common, especially if you have autoimmune thyroid disease (Hashimoto's) diagnosed by raised Thyroid antibodies

Ask GP/endo to test vitamin levels NOW

Recommended on here that all thyroid blood tests should ideally be done as early as possible in morning and before eating or drinking anything other than water .

Last dose of Levothyroxine 24 hours prior to blood test. (taking delayed dose immediately after blood draw).

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 thyroid antibodies or all relevant vitamins

List of private testing options

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

Medichecks Thyroid plus vitamins including folate (private blood draw required)

medichecks.com/products/thy...

Thriva Thyroid plus antibodies and vitamins By DIY fingerpick test

thriva.co/tests/thyroid-test

Thriva also offer just vitamin testing

Blue Horizon Thyroid Premium Gold includes antibodies, cortisol and vitamins by DIY fingerprick test

bluehorizonbloodtests.co.uk...

If you can get GP to test vitamins and antibodies then cheapest option for just TSH, FT4 and FT3

£29 (via NHS private service ) and 10% off if go on thyroid uk for code

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

monitormyhealth.org.uk/thyr...

Many people find Levothyroxine brands are not interchangeable.

Once you find a brand that suits you, best to make sure to only get that one at each prescription.

Watch out for brand change when dose is increased or at repeat prescription.

Many patients do NOT get on well with Teva brand of Levothyroxine. Teva contains mannitol as a filler, which seems to be possible cause of problems. Teva is the only brand that makes 75mcg tablet. So if avoiding Teva for 75mcg dose ask for 25mcg to add to 50mcg or just extra 50mcg tablets to cut in half

Are you currently taking Teva?

Teva, Aristo and Glenmark are the only lactose free tablets

healthunlocked.com/thyroidu...

Teva poll

healthunlocked.com/thyroidu...

academic.oup.com/jcem/artic...

Physicians should: 1) alert patients that preparations may be switched at the pharmacy; 2) encourage patients to ask to remain on the same preparation at every pharmacy refill; and 3) make sure patients understand the need to have their TSH retested and the potential for dosing readjusted every time their LT4 preparation is switched (18).

Levothyroxine is an extremely fussy hormone and should always be taken on an empty stomach and then nothing apart from water for at least an hour after

Many people take Levothyroxine soon after waking, but it may be more convenient and perhaps more effective taken at bedtime

verywellhealth.com/best-tim...

No other medication or supplements at same as Levothyroxine, leave at least 2 hour gap.

Some like iron, calcium, magnesium, HRT, omeprazole or vitamin D should be four hours away

(Time gap doesn't apply to Vitamin D mouth spray)

If you normally take levothyroxine at bedtime/in night ...adjust timings as follows prior to blood test

If testing Monday morning, delay Saturday evening dose levothyroxine until Sunday morning. Delay Sunday evening dose levothyroxine until after blood test on Monday morning. Take Monday evening dose levothyroxine as per normal

SlowDragon profile image
SlowDragonAdministrator

Can you add the actual results and ranges on these “normal” results

Kg147 profile image
Kg147 in reply to SlowDragon

Thank you SlowDragon, that's very useful - I didn't realise the starting dose was 60mcg.

I had blood tests about a month ago through medichecks and the results were as follows:

Inflammation: CRP HS = 0.38mg/L (range<5)

Iron: ferritin = 20.9ug/L (range 13-150)

Vitamins: vit B12 = 79.9pmol/L (range>37.5), vit D = 55.3nmol/L (range 50-175)

TSH = 1.9mIU/L (range 0.27-4.2)

Free T3 = 4.41pmol/L (3.1-6.8)

Free thyroxine = 11.2pmol/L (12-22)

Thyroglobulin antibodies = 22.4kIU/L (<115)

Thyroid peroxidase antibodies = 132kIU/L (<34)

The endo also recommended taking 50 micrograms vitamin D which I started, and the GP started me on iron supplements 2 weeks ago.

I plan on introducing magnesium, and a B complex once I have adjusted to the levothyroxine, however was concerned about the enlargement of my thyroid.

Thank you for your help.

Kg147 profile image
Kg147 in reply to Kg147

The brand of levothhroxine I'm also currently taking is NorthStar - i was given 50mcg tablets to cut in half.

SlowDragon profile image
SlowDragonAdministrator

It will take 6-8 weeks for each dose increase to have effect

Perhaps stay on 25mcg for next 6 weeks, before increase up to 50mcg

Improving Low vitamin levels will help you tolerate increasing levothyroxine upwards after each blood test

guidelines on dose levothyroxine by weight

Even if we don’t start on full replacement dose, most people need to increase levothyroxine dose slowly upwards in 25mcg steps (retesting 6-8 weeks after each increase) until on full replacement dose

NICE guidelines on full replacement dose

nice.org.uk/guidance/ng145/...

1.3.6

Consider starting levothyroxine at a dosage of 1.6 micrograms per kilogram of body weight per day (rounded to the nearest 25 micrograms) for adults under 65 with primary hypothyroidism and no history of cardiovascular disease.

gp-update.co.uk/Latest-Upda...

Traditionally we have tended to start patients on a low dose of levothyroxine and titrate it up over a period of months.

RCT evidence suggests that for the majority of patients this is not necessary and may waste resources.

For patients aged >60y or with ischaemic heart disease, start levothyroxine at 25–50μg daily and titrate up every 3 to 6 weeks as tolerated.

For ALL other patients start at full replacement dose. For most this will equate to 1.6 μg/kg/day (approximately 100μg for a 60kg woman and 125μg for a 75kg man).

If you are starting treatment for subclinical hypothyroidism, this article advises starting at a dose close to the full treatment dose on the basis that it is difficult to assess symptom response unless a therapeutic dose has been trialled.

A small Dutch double-blind cross-over study (ArchIntMed 2010;170:1996) demonstrated that night time rather than morning dosing improved TSH suppression and free T4 measurements, but made no difference to subjective wellbeing. It is reasonable to take levothyroxine at night rather than in the morning, especially for individuals who do not eat late at night.

BMJ also clear on dose required

bmj.com/content/368/bmj.m41

bestpractice.bmj.com/topics...

katwoo2 profile image
katwoo2

Perhaps take a drop of Lugol's iodine in water every day. Iodine is the fuel the thyroid runs on but because of misinterpreted results of testing that Wolff & Chaikoff did in 1948, doctors are trained that iodine is bad for people with thyroid problems. I have a client who still has her thyroid which had developed a nodule, who started taking iodine. Thanks to the lockdown I haven't seen her since February, but I am sure she would have let me know if anything dramatic had happened.

Please read Dr David Brownstein's website, he was trained by Dr Guy Abrahams who recognised that Wolff & Chaikoff had got their interpretation of their experiment results wrong. power2practice.com/article/...

Best wishes,

Katrina

helvella profile image
helvellaAdministratorThyroid UK in reply to katwoo2

Perhaps you could explain something in that link?

When you couple in the increasing exposure to toxic halides such as bromine, fluoride, and chlorine derivatives, our iodine requirements have markedly increased over the years.

Why does he flip between element names (bromine and chlorine) and ion name (fluoride)?

(Interesting as he recommends Selina’s Celtic Brand Sea Salt, which is mainly sodium chloride. A chlorine derivative.)

It might appear to be pedantry, but I am genuinely interested in why the apparently intentional switch.

katwoo2 profile image
katwoo2

Iodine, fluoride, chlorine & bromine belong to a chemical group called halides and they all have the ability to attach to the same cell receptors. If fluoride, chlorine & bromine have already attached to the iodine cell receptors, the iodine can't enter the cell. Natural sea salt contains iodine and is a good way of adding iodine to the diet and thereby the body.

That is how I understand it as a non-scientist but have heard this explanation from many scientists who actually understand how thyroids work.

helvella profile image
helvellaAdministratorThyroid UK in reply to katwoo2

Again, you are switching between element names and ion names! And I don't know why.

You wrote:

Iodine, fluoride, chlorine & bromine

The elements are:

Iodine, fluorine, chlorine & bromine - all ending -ine.

The (simplest) ions are:

Iodide, fluoride, chloride & bromide - all ending -ide.

The amount of iodine (in whatever form) in sea salt tends to be quite low. Certainly much lower than USA iodised salt. An awful lot of things in the sea are extremely good at absorbing whatever iodine is present. Think seaweeds for a start. Plus quite a bit ends up in the atmosphere.

Why, even on the website for Selina's Celtic Brand Sea Salt - the product he appears to recommend, it says:

If you are looking for iodine support, please order S-CVEG, our gourmet iodine seaweed seasoning.

selinanaturally.com/light-g...

The site doesn't even seem to publish any analyses of their salts.

katwoo2 profile image
katwoo2 in reply to helvella

I think fluoride is mentioned as opposed to fluorine because it is the form of fluorine we encounter most in our water and toothpaste.

helvella profile image
helvellaAdministratorThyroid UK in reply to katwoo2

Possibly. But what form of chlorine do we encounter most (that we ingest)?

I suspect chloride (as in ordinary salt).

What form of iodine do we encounter most?

I suspect iodide or iodate (as in iodised salt - even if not common in the UK).

katwoo2 profile image
katwoo2 in reply to helvella

Our water is chlorinated as well as fluoridated, I can smell the chlorine when I run water while I am waiting for it to warm up! I emailed our local water supplier about five years ago, asking why our water was fluoridated and why I was concerned.

I was most surprised to read their reply, which explained that our water is fluoridated to protect our teeth at the request of our local health authority, so I have little respect for them too.

So because some people can't be bothered to look after their teeth by brushing, they damage enormous numbers of thyroids in the process, and then those patients don't get the medication they need to be healthy!

It drives me nuts!

helvella profile image
helvellaAdministratorThyroid UK in reply to katwoo2

The limit for chlorination in the UK is, apparently, 4 milligrams per litre.

We consume far, far more chlorine as sodium chloride.

Fluoridation of water is technically under local authority control (at least in England, need to check Scotland, Northern Ireland and Wales). But I seem to remember this was a change to the previous situation - again, need to check up.

katwoo2 profile image
katwoo2 in reply to helvella

We don't have iodised salt in the UK, I use Himalayan pink, but then again I stocked up on Thai NDT before that became extinct because of the effect of African Swine Fever on the Chinese pigs the Thais used to make NDT from. How African Swine Fever got to China is beyond me.

I did wonder if there was a link between African Swine Fever and Covid 19 but others had obviously wondered the same thing and had done some research and found no link.

helvella profile image
helvellaAdministratorThyroid UK in reply to katwoo2

We can buy iodised salt in the UK.

And a surprising amount of processed food is made with iodised salt.

katwoo2 profile image
katwoo2 in reply to helvella

I didn't know that but will stick with my pink Himalayan salt, it has a lot of minerals in it apparently. I don't eat much processed food at all, so won't get it that way.

helvella profile image
helvellaAdministratorThyroid UK in reply to katwoo2

Even a pro-Himalayan pink salt page says:

Packs a hearty 80+ minerals and elements- Himalayan salts are mineral packed crystals which formed naturally within the earth made up of 85.62% sodium chloride and 14.38% other trace minerals including sulphate, magnesium, calcium, potassium, bicarbonate, bromide, borate, strontium, and fluoride (in descending order of quantity).

realfarmacy.com/10-amazing-...

That is, it contains more of the much-criticised bromide and fluoride than any form of iodine (e.g. iodide).

Murphysmum profile image
Murphysmum

I used to get (sometime still do) get swelling every time my dose was changed or needed changed.

You get used to it after a while but it’s not a particularly nice sensation

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