Unmedicated and pregnant : Hello, I am almost... - Thyroid UK

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Unmedicated and pregnant

Statts profile image
25 Replies

Hello, I am almost 5 weeks pregnant and have Hashimotos. I have never taken thyroxine for it since I cleaned up my lifestyle/ diet and symptoms went away. I do take LDN for the antibodies which seems to have been bringing them down slowly. When I was first diagnosed I had been suffering with anxiety, palpations, weight loss and generally feeling jittery. Since my symptoms went away I have been feeling great, I overcame the anxiety which at one point had me pretty much house bound.

My GP has prescribed me 25mcg of vencamil and after just one tablet all of the symptoms I used to experience are back. I feel awful.

I have an appointment in a couple of weeks with a private thyroid doctor and in the meantime my GP has asked me to stop taking the meds (we are also awaiting to hear back from an NHS endocrinologist but it's been a week and was marked as urgent but they don't seem to be concerned).

I also had an NHS TFT done last week but the GP booked it for 12pm so the results weren't accurate (TSH 5.1). Due to my results appearing borderline I don't think the GP is as concerned but having done my own test I can see my TSH is way higher and definitely too high for pregnancy.

My question is, has anyone else experienced this on such a low dose? I've been told that it's too small a dose but I know I'm very sensitive to meds so worried I'm going to have even more issues with a higher dose.

My ferritin is above 100 (I've been working on it since last April) and vitamin D and B12 are all good too.

I've added a photo of my latest private bloods which were done at 9am.

Thank you.

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Statts profile image
Statts
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25 Replies
Jaydee1507 profile image
Jaydee1507Administrator

Welcome to the group.

Can you add actual results for vitamins B12, folate & D3?

There is a phenomenon whereby beginning Levo can seem to bring on multiple symptoms and this isnt fully understood. Usually things improve as time goes on and the dose is increased. As you are aware your TSH needs to be much lower for pregnancy. During pregnancy we need more thyroid hormone.

Sometimes people experience worsening symptoms on 25mcg Levo because its not replacing what your own thyroid was putting out.

Which brand Levo did you take? Some brands suit some better than others.

Statts profile image
Statts in reply toJaydee1507

Thank you for replying. I am lactose intolerant so was put on Vencamil which I've heard most get on with. Someone in another group mentioned the negative feedback loop from taking too low a dose which I did wonder is the issue or could it be I'm just highly sensitive.

I feel in such a difficult situation as I can't continue to take the meds as it's left me feeling so poorly but I know I should be taking it. Particularly the anxiety / having a panic attack has triggered all of the old sensations and fears I'd spent so long overcoming.

My folate was tested at the end of last year and it was 26.6 (8.83 - 60.8). I have attached an image of the latest ferritin, vit d and B12.

Thank you.

Vitamin results
Jaydee1507 profile image
Jaydee1507Administrator in reply toStatts

How long did you try taking the 25mcg Levo?

What supplements exactly are you taking?

B12 is only just optimal and folate at 34% of range still too low. Some people do need to buy a separate 400mcg methylfolate to top up a B complex and get better results.

Have you had a full iron panel run? Ferritin can be good yet serum iron low. Suggest you do that.

The longer you have been hypo the harder it is sometimes to begin Levo treatment. Leaving it longer won't help that I'm afraid and you may need to go through a period of feeling worse.

Indeed Vencamil is generally well tolerated although some people do get on well with Teva so you could try that next perhaps.

Statts profile image
Statts in reply toJaydee1507

Thank you for your advice 🙂 I only managed one dose of vencamil. It was pretty terrifying to go from feeling great to feeling horrendous. it's been more than 24 hours and I still feel absolutely wired and jittery and my heart is racing. Surely that can't be normal? I was led to believe such a small dose would be barely noticable.

I've been working with a nutritionist who has me take magnesium bisglycinate , vitamin D3 & K2, fish oil and methyl b complex. I also take ferrous fumarate daily with high dose vit c as my ferritin was 18 last summer and I think that contributed to the anxiety.

I last did a full iron panel in November and I have attached the results.

My doctor did offer me Teva but I've spent so long fixing my gut after chronic IBS I opted for Vencamil.

Thank you.

Iron test
Jaydee1507 profile image
Jaydee1507Administrator in reply toStatts

You could start a new post with your iron panel as that is specialist peoples knowledge and I dont feel up to commenting.

What you have experienced is certainly what a minority of people do experience I'm afraid. Its not that common but will mean you need to go very slowly.

Teva liquid is a different formulation completely to Teva tablets and doesnt contain mannitol which is usually what causes issues. You could try that and then go even more slowly by how you feel.

Buddy195 profile image
Buddy195Administrator

Welcome to the forum & congratulations on your pregnancy Statts

So many of us felt worse when commencing Levo, with symptoms only improving when optimising on a higher dose (plus key vitamins also being optimal). Personally, I found I had to increase Levo super slowly, adding 12.5mcg alternate days at first, then daily. I also ensured GP specified the brand of Levo I could tolerate on my prescription.

Statts profile image
Statts in reply toBuddy195

Thank you 😊 ah so perhaps I would have been better off going even lower on the dose and slowly working my way up.

I can't believe I've gone from feeling great to feeling like I want to crawl into a dark corner from just one small dose. Thank you for sharing that it does get better!

I actually specifically asked for Vencamil because I'd read so many great things from others. My GP tried to give me liquid Teva initially but I've just spent 2 years and a small fortune fixing my gut and didn't want to risk the mannitol messing it up.

FallingInReverse profile image
FallingInReverse

Not sure I’ll have too much to add. But I am curious - you took one dose of 25 mcg? And that’s it?

Is it possible there’s a filler you’re reacting to - or is it ally all possible something else is going on?

I’m not going to say it’s not possible as who knows, but correct - one dose and an immediate reaction is not usually the way it would go.

So I’m more asking questions than giving answers , but I am curious.

Statts profile image
Statts in reply toFallingInReverse

Yes sadly just the one dose. I suppose it could be a reaction but I'd expect more like swelling or some other reaction. This has made me feel hyper which is how I was at the very beginning of my diagnosis. I even had a panic attack which I haven't had since the height of my symptoms.

It's been over 24 hours and although I feel less of the crushing feeling in my throat I feel very on edge, anxious and jittery. My heart also is still racing.

I was under the impression that Vencamil was one of the 'cleaner' ones available but I could be wrong.

I had read so many great reviews of others taking such a low dose and feeling nothing I was hopeful I would be the same.

FallingInReverse profile image
FallingInReverse in reply toStatts

I had read so many great reviews of others taking such a low dose

where?

Obsdian profile image
Obsdian

I wanted to add, it was around the 5 week mark where pregnancy symptoms hit suddenly one day in both my pregnancies. Is that a possibility?

Statts profile image
Statts in reply toObsdian

Unfortunately I don't think it was pregnancy symptoms. This is my third baby and I usually get morning sickness from about 6 weeks. I definitely feel I've swung hyper and having a panic attack used to be triggered by the internal shake I used to get. I feel like I have high doses of cortisol running through me if that makes sense.

I think also a big giveaway for me was the crushing throat feeling but that seems to have calmed down somewhat today.

FallingInReverse profile image
FallingInReverse in reply toStatts

Were you hypo for the other two pregnancies?

Statts profile image
Statts in reply toFallingInReverse

I wasn't diagnosed until a year after the second but my GP looked at past results pre children and she can see my TSH was climbing and my T4 was pretty low (I think it was 10.1 in 2015). Both pregnancies were text book it was only after the second and I started to have anxiety out of nowhere and ectopic beats did they run another thyroid test.

pennyannie profile image
pennyannie

Hello Statts :

Just to add there is a liquid T4 - could this be an option ?

Statts profile image
Statts

I think the Teva my GP was going to prescribe me was liquid T4. Do you happen to know of any other brands.

I wonder if maybe I just need to start very low. When I started LDN I had to take a tiny dose as i reacted to the prescribed dose (although nowhere near as badly).

helvella profile image
helvellaAdministrator in reply toStatts

Some do not tolerate oral solutions (liquid) - possibly partly because of the relatively high glycerol content.

helvella - Thyroid Hormone Medicines - UK

The UK document contains:

Up-to-date versions of the Summary Matrixes for levothyroxine tablets, oral solutions and liothyronine available in the UK. These include declared ingredients for all UK-licensed products.

Details of every dosage of each medicine include PL numbers, PIP numbers, tablet markings, product history and links to:

Patient Information Leaflets

Summary of Product Characteristics

Product Assessment Reports

Dictionary of Medicines and Devices (dm+d) entry and current prices

Document has links to:

British National Formulary

NHS Drug Tariff, etc.

PLUS how to write prescriptions in Appendix F.

Also includes links for anti-thyroid medicines (but not product details).

Direct link to PDF:

📄 dropbox.com/s/bo2jzxucgp9hl...

Blog last updated 02/02/2025 - documents are regularly updated

Link to blog:

helvella.blogspot.com/p/hel...

DippyDame profile image
DippyDame

Vencamil is a bio-identical T4

It replaces the T3 in your body, it doesn't top it up

So 25mcg is most likely far too low a dose causing symptoms to return.

The usual starting dose of Levo is 50mcg

As the dose is increased your symptoms should resolve.

As the T4 dose increases your TSH will fall because the pituitary senses you then need less hormone it will then signal the thyroid to reduce T4 production via a lower TSH signal

Your TSH is too high but it's only a signal....the problem is lack of thyroid hormones

In any case TSH is not the most accurate marker, it fluctuates throughout the day.

The most important marker is FT3 followed by FT4. Both are on the low side

FT4 16.6 ( 12 - 22) = 46% through ref range

FT3 4.5 ( 3.1 -6.8) = 37.84% ditto

We aim to have both Frees roughly approaching 75% through their respectie ranges

This proves you are undermedicated

The correct dose should resolve your symptoms so a further increase of 25mcg is required next,

Test again after 6 weeks on 75mcg

Repeat test after a further 6 weeks and review results....you will probably need a further 25mcg!

You should have no problems on a higher dose though you can expect to have a few symptoms until the increased dose settles....this is normal and annoying but not in any way dangerous.....unless your FT3 is over range

Be aware that with Hashi's you will likely experience transitory swings towards hyperthyroidism as the immune system attacks the thyroid. During this time extra hormone will be dumped in the serum raising the Frees.....the numbers will fall back after antibodies come to the rescue. Your body will normally cope with this rise and fall.

Your symptoms suggest you have been hypothyroid for some time and for good health require replacement hormone (T4) at a therapeutic level.

Your TSH will fall as your dose increases.

I prefer to rely on the level of the Frees....not a fluctuating TSH whose only real value was to initially diagnose hypothyroidism before medication. Medics started to tweak TSH to create a quick cheap test....and it's unreliability has caused a lot of problems.

thyroidpatients.ca/2021/07/...

You will feel much better when correctly medicated and without a scary TSH focus

Relax and enjoy your pregnancy ...it's a very special preparation time before baby arrives.

Best of luck

greygoose profile image
greygoose in reply toDippyDame

Venncamil is T4.

DippyDame profile image
DippyDame in reply togreygoose

Oh lordy...my mistake.....I have T3 on the brain

Apologies everyone....corrected

Jaydee1507 profile image
Jaydee1507Administrator in reply toDippyDame

Vencamil is the brand name for Aristo levothyroxine - T4.

DippyDame profile image
DippyDame in reply toJaydee1507

Yes, my slip up....apologies

Corrected!

greygoose profile image
greygoose

Hi Statts, welcome to the forum. :)

I think you've got to stop referring to levo as 'meds'. I know almost everybody does but it can be psychologically negative because levo isn't 'medication' as we generally know it, it's not a drug. It's the thyroid hormone T4- it's thyroid hormone replacement. And just because you're sensitive to some drugs has nothing to do with how you well react to thyroid hormone.

I think it was insane to start you on 25 mcg levo. It's too low. Especially as you're pregnant and your baby needs your T4. As others have said, it was enough to lower your TSH, so that your thyroid reduced the amount of hormone it was producing, but not enough to replace it. Hence the return of the symptoms. You should ask your doctor to increase your dose as of now.

By the way, having your blood draw at 12 pm doesn't mean they're inaccurate. They're accurate for 12 pm. But at 12 pm, your TSH is at its lowest, that's all. It's highest before 9 am. :)

Obsdian profile image
Obsdian in reply togreygoose

T4, that 3 is a catchy typo today.

greygoose profile image
greygoose in reply toObsdian

🤣 Corrected.

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