Carbimazole side effects: My husband was... - Thyroid UK

Thyroid UK

137,936 members161,765 posts

Carbimazole side effects

1digits0 profile image
20 Replies

My husband was prescribed Carbimazole 5 weeks ago. Since taking it has been taken a toll on him. Seeing a 58 year old slowly unfolding into an 80 year old.

Can't eat/sleep, permanently cold and wears 4 layers plus heating on and still cold.

GP (not his usual) contacted and said oh it's flu. I went into GP surgery a week later as no improvement and demanded a GP contact him regarding meds. 2 hours later GP phoned and after phone consultation asked to see husband the following week.Reduced Carbimazole to 5mg from 10mg at face to face appointment. Bloods and ECG booked 2 days later. (awaiting results)

Has anyone on Carbimazole has a similar experience?.

Written by
1digits0 profile image
1digits0
To view profiles and participate in discussions please or .
Read more about...
20 Replies

Previous post here:healthunlocked.com/thyroidu...

Have you got your husband's blood test results yet?

As explained in your previous post most likely his dose is too high and/or inappropriate.

1digits0 profile image
1digits0 in reply to

Not yet, still waiting on them. Not sure if you can go any lower than the 5mg which it has been reduced to. He is so close to stopping it himself as he feels so I'll.

in reply to 1digits0

It doesn't take 2 weeks to get results printed. Chase them up. Get your husband to call and give them permission to speak with you if he doesn't want to chase them himself.

Until you know what his thyroid bloods are you can't make any progress.

pennyannie profile image
pennyannie in reply to 1digits0

You can cut the 5mg Carbimazole in half - but I'm not sure why he is on this drug and blocking his thyroid hormones -

He's just ' lost ' probably some thyroid hormone production by having ' lost ' half his thyroid - and people then usually if not recovered are prescribed T4 - a thyroid hormone replacement to give them more support - not less = which is what the AT drug does.

1digits0 profile image
1digits0 in reply to pennyannie

It's a very long story. Since partial thyroidectomy 2 years until 3 months ago no follow up or check on thyroid levels have been carried out. I know the pandemic has caused alot of delays.End Nov GP gave the 3months worth of blood results. Examined his neck found a lump had camera and ultrasound done in the 2 week fast track. Shows a mass of nodules on remaining gland hence the carbimazole as blood results showed over activity and worried about a storm.

GP appointment on Friday this week as follow up from November appointment. Hopefully she can explain the results.

He feels that I'll he made the decision today not to take any more carbimazole.

Sorry for the essay.

pennyannie profile image
pennyannie in reply to 1digits0

No worries -

I understand better now I know the hemi was 2 years ago and this is a new development and likely a nodule causing the issue.

keep us in the loop -

Take good care ;

1digits0 profile image
1digits0 in reply to pennyannie

I will do that for sure.

pennyannie profile image
pennyannie

Hello again ;

Since the Carbimazole is an Anti Thyroid drug it is blocking your husbands own daily thyroid hormones production from entering the blood stream and when on too much AT drug you will likely feel the disabling symptoms of hypothyroidism - which it sounds like he is :

By reducing the Carbimazole more of his own thyroid hormone production will be released into the blood stream and hopefully some of these symptoms he's suffering will be alleviated.

Without any thyroid function of one's own, after a thyroidectomy for instance, one needs to be prescribed T4 - a thyroid hormone replacement which does the opposite of an AT drug and feeds the body with a daily regular supply of thyroid hormones in order to live.

I'm still confused as to why he was prescribed an AT drug after his partial thyroidectomy

I would also think your husband also needs to have his core strength vitamins and minerals run as if these have nosedived through the ranges because of his inability to eat well his ferritin, folate, B12 and vitamin D may have nosedived through the ranges and these need to be maintained at optimal levels for any thyroid hormone replacement to work well.

I'm sorry you are going through so much yourself as it's very difficult trying to get help and understanding and representing a loved one.

PurpleNails profile image
PurpleNailsAdministrator

I would guess that as 5mg is viewed as lowest dose doctors have just kept in on it to make sure he doesn’t reach hyper levels.  Or the TSH may be remaining low & not responding & rising in response to low levels & his FT4 & FT3 are low, but haven’t been tested or are ignored by doctors because the focus on TSH. 

The TSH is unreliable and it’s very important to see what information doctors are basing decisions on and if treatment appropriate.

 Your previous post says he had Hemi thyroidectomy, what he hyper at time? Taking carbimazole ?  Function may not have been thoroughly checked prior to surgery of the necessity for surgery was compression. 

If you’re not making progress getting a full picture using a company supplying private blood test will help you be in a position to advocate with Doctor - might be best option.  

Here’s a list of companies offering different options, some packages include thyroid function, key nutrients and thyroid Antibodies (Medichecks advanced thyroid)   Others a basic function only.  (Monitor my health)

Some also have discount codes available.thyroiduk.org/help-and-supp...

You order test online - the kits arrives via post - sample can be taken by finger prick (extra fee for private venous draw). Post back and results available online usually quite quickly.  

1digits0 profile image
1digits0 in reply to PurpleNails

Thank you for your reply. My husband had the partial thyroidectomy due to a very large goiter which was basically strangling him so had to be done fairly fast. No aftercare until 3 months ago while testing blood.

PurpleNails profile image
PurpleNailsAdministrator in reply to 1digits0

Was function an issue at time of surgery? Was he taking carbimazole then? Or was he started on carbimazole after?

1digits0 profile image
1digits0 in reply to PurpleNails

No issue before. Carbimazole prescribed 6weeks ago.

pennyannie profile image
pennyannie in reply to PurpleNails

Hemi / partial was 2 years ago :

SlowDragon profile image
SlowDragonAdministrator

You need to see results from BEFORE starting Carbimazole and recent test

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

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

Come back with new post once you get results

Meanwhile

For full Thyroid evaluation you need TSH, FT4 and FT3 tested

plus both TPO and TG thyroid antibodies tested at least once

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

Low vitamin levels are extremely common with Hashimoto’s or Graves’ disease

Recommended on here that all thyroid blood tests early morning, ideally just before 9am

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...

Link about Graves’ disease

thyroiduk.org/hyperthyroid-...

Graves Disease antibodies test

Has to be private blood draw.

medichecks.com/products/tsh...

Only do private testing early Monday or Tuesday morning. 

Watch out for postal strikes, probably want to pay for guaranteed 24 hours delivery 

1digits0 profile image
1digits0 in reply to SlowDragon

Thank you very much for the information. I shall read through and digest.

Hedgeree profile image
Hedgeree

Hi 1digits0,

It must be very worrying for you seeing your husband so unwell and symptomatic.

I'm just emphasizing what others have said. You really do need to see your husband's blood test results before he had his hemithyroidectomy. This will help to determine if he's on the right treatment.

I've been reading the forum for the last couple of years and the knowledge and experience of admin and other forum users is very extensive. They will guide you as best they can.

I had a partial thyroidectomy in August 2022 due to a suspicious nodule. I was prescribed Levothyroxine two weeks after my operation as the other half of my thyroid wasn't coping. The support from the forum has been invaluable.

As others have already suggested you need to see your husband's previous blood test results and also get him to have full thyroid testing including antibodies done privately.

It is difficult to advocate for another even if it is for your husband when they don't like to question their GP.

Best wishes.

1digits0 profile image
1digits0 in reply to Hedgeree

Thank you for your kind words. I am reading up on as much as I can. He has been referred to Endocrinologist but appointment is in July.

humanbean profile image
humanbean

Why did your husband have half his thyroid removed?

1digits0 profile image
1digits0 in reply to humanbean

He had a large goiter which was strangling him basically and travelling down to his heart. That was 2 years ago.

SlowDragon profile image
SlowDragonAdministrator in reply to 1digits0

It’s more likely he was hypothyroid having hemi thyroidectomy

Come back with new post once you get copies of results before Carbimazole was started

You may also like...

Side effects from coming off carbimazole

will help others. Has anyone else experienced symptoms after stopping carbimazole? Bearing in mind I

Carbimazole side effects

reaction is not the carbimazole !! I really am at a loss what to do now. He has also reduced my...

Side effects of carbimazole

Husband diagnosed with hyperthyroidism in nov 2022. Carbimazole prescribed early December. He has...

Side effects of Carbimazole or just a cold

crap and assuming it’s a cold and moving on to it being side effect of Carbimazole? In the little...

Carbimazole side effects: Salivary gland enlargement.

Carbimazole since October 2021 and have read that this can be a side effect of Carbimazole. I’ve...