Taking B12 with Hypothyroidism : Good morning. A... - Thyroid UK

Thyroid UK

141,244 members166,489 posts

Taking B12 with Hypothyroidism

TasJSA profile image
47 Replies

Good morning. A question on B12…

I am considering taking a higher dose of B12 (I currently take 1microgram per day in my ordinary multivitamins) but am concerned about combining it with Levothyroxine. I was prompted by this Times article by Dr Mark Porter to consider it.

Vitamin B12 deficiency is underdiagnosed — here’s what to look for.

thetimes.co.uk/article/80d9...

I suspect my tiredness and other symptoms may be partially caused by a B12 deficiency. I have an appointment with my GP on Tuesday week to discuss how it could be beneficial.

Does anyone have any advice on dangers/benefits of combining it with Levothyroxine please? Thanks.

Written by
TasJSA profile image
TasJSA
To view profiles and participate in discussions please or .
Read more about...
47 Replies
SlowDragon profile image
SlowDragonAdministrator

Multivitamins never recommended on here

Most contain iodine not recommended on levothyroxine, especially if you have autoimmune thyroid disease

And most contain iron, which you may not need

Stop any supplements that contain biotin 5-7 days before any blood test

Suggest you get vitamin D, folate, B12 and ferritin levels tested…..via GP or privately

How much levothyroxine are you currently taking

What were most recent thyroid results

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...

Link about Hashimoto’s

thyroiduk.org/hypothyroid-b...

Symptoms of hypothyroidism

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

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

TiggerMe profile image
TiggerMeAmbassador

First suggestion would be to ditch the multi vits and get a decent B complex and possibly a separate B12 sublingual are good as they avoid the stomach.

Multi vits often don't have the best form or ratio of things and combine ones that would rather not be in your stomach at the same time as they block each others absorption

I think most of us on here take B12 and aim for 500-800ng/L

RedApple profile image
RedAppleAdministrator in reply toTiggerMe

'B12 sublingual are good as they avoid the stomach.'

I've always been a tad sceptical of this claim. How much of it actually goes down your throat in your saliva I wonder. If I truly wanted to avoid the stomach, I'd try dermal absorption patches.

TiggerMe profile image
TiggerMeAmbassador in reply toRedApple

True, my personal experience has been

sublingual 8000 NRV complex result 852ng/L (cyanocobalamin) against

Thorne Basic B 16.667% DV result 539ng/L (methylcobalamin)

so it could actually be the different 'sort' of B12 😵

Next results will be on a mixture of methyl and adenosylcobalamin at 200,000NRV! Probably should have looked at that label sooner I only halved the dose! 😄

Results due tomorrow hopefully... so I'll be all and none the wiser!

An expensive test to show I have expensive pee 😂

Sneedle profile image
Sneedle in reply toTiggerMe

Results due tomorrow hopefully..

I'm very interested to know your results and what you make of them.

Which product is the 200.000 nrv adenosyl and methyl one?

A final question - do you have any symptom improvements which you can put down this supplement? Or is it too early to tell?

🌸

TiggerMe profile image
TiggerMeAmbassador in reply toSneedle

Nature Provides is the brand of B12 3000mcg the first one that shot my levels from 310 to 852 in 8 weeks was Solgar Liquid B12 2000 mg with B-Complex (sickly sweet I think berry flavour)

To be honest when I found this forum and all the great advice I completely ignored the instruction to add one supplement at a time as I was so depleted in everything... thankfully no big reactions or disasters to date! I also added in T3 so all in all I can't pinpoint individuals from these early days but within weeks I was feeling better than I had for years!

I shall report back further findings when results land 🤗

RedApple profile image
RedAppleAdministrator in reply toTiggerMe

I don't have PA nor B12 absorption issues so just take hydroxycobalamin 1000mcg approximately once a week. When I originally tried methylcobalamin, it seemed to add to histamine intolerance issues.

TiggerMe profile image
TiggerMeAmbassador in reply toRedApple

Ah, interesting perhaps I need to revert to cyanocobalamin or give that one a try... lets see what the results show.... I see Metabolics and Epigenetics offer these as liquids to add to drinks.... my histamine issues are kept at bay by avoidance as I just can't be bothered to risk feeling poisoned

RedApple profile image
RedAppleAdministrator in reply toTiggerMe

I've taken Swanson Hydroxycobalamin for years now (available through iHerb and probably elsewhere). seems to do the job for me.

TiggerMe profile image
TiggerMeAmbassador in reply toRedApple

These ones?

SWANSON B-12 HYDROXYCOBALAMIN, 1000MCG - 60 CHEWABLE TABLETS

Swanson Vitamin B12 Hydroxycobalamin features cutting edge hydroxycobalamin, a form of the vitamin B12 with excellent bioavailability. Sweetened with dental friendly stevia and xylitol and featuring delicious natural berry flavoring, our sugar free tablets utilize Supplemelts technology to ensure fast, efficient absorption. Best known as an energy booster, vitamin B12 also supports cardiovascular health.

RedApple profile image
RedAppleAdministrator in reply toTiggerMe

Yes :)

TiggerMe profile image
TiggerMeAmbassador in reply toRedApple

Scores on the doors.... active B12 >150... so again the sublingual has done the trick! So I shall reduce to 3 times a week...

I also use their sublingual Vit D/K2 and that has performed well with a result of 131nmol/L

Sneedle Both Nature Provides

Sneedle profile image
Sneedle in reply toTiggerMe

Oooh that's a gratifying Active B12 (pulls sad face yours is better than mine😁) well done! You're not on injections is that right? Do you notice any obvious symptom reduction? Energy?

The B12 is the one in the picture? I think SlowDragon on TUK forum recommends it. I'm intrigued to try, since I came across the idea of adenosylcobalamin working more on the Krebs cycle and helping out the poor mitochondria. Or something. I think.🤔

And I have a CFS label (not going to call it a diagnosis any more).

Sneedle profile image
Sneedle in reply toSneedle

Oh I am posting in TUK. Thought I was Next Door....

radd profile image
radd in reply toSneedle

🤣

TiggerMe profile image
TiggerMeAmbassador in reply toSneedle

Yes that's the one...strong stuff!! No never had injections... Came with a £5 off gift voucher if you've not used them before FZBX5, just started my other half on it as his levels are tragic and he's a red meat eater

They don't tell you how much OTT which is annoying so I'll just alternate days

My CF is (dare I say it) improving now I have my iron, B12, Vit D, folate and a decent dose of T3 sorted.... gradually crawling back to life and having less crashes 💃

I did have to revisit the different types and I think you are right about the adeno being the best for mitochondria, with methyl and hydro being natural and cyan being from the lab!

Sneedle profile image
Sneedle in reply toTiggerMe

Hmm I think I'm going to have to try it. Maybe you'll get a brand new other half once it revs up😀

What is OTT ? by god I'm getting good at this asking questions and not feeling shy about it, this site is wonderful for that.

But that is just fantastic you're feeling more alive...how long out of interest have you been following the suggestions on this forum?

I've been here since Feb and have a way to go yet with the levels, but having a plan makes all the difference.

Weird isn't it, cyan from the lab sounds like a Frankensupp and yet some people do well on it!

TiggerMe profile image
TiggerMeAmbassador in reply toSneedle

OTT = over the top

I found this site a year ago, I've been following the guidance, testing, trialling, tweaking, re-testing... you know the drill... reading enough for a degree... learning new things most days here!

Sorting out the right level of HRT also played a part as low Oestrogen adds to the madness, do you take magnesium to help you relax? The other top tip is to take B vits in the morning in case they stimulate you... though you can use that if desired!😁

All was great to start with as I was in charge but then had to jump through some hoops with an NHS Endo to get Lio prescribed which knocked me back for a few months earlier this year... I've got that sorted now and things have settled into an upward trajectory for the last 3 months 🎉

Sneedle profile image
Sneedle in reply toTiggerMe

Well now I know my brain has a problem...sat there staring at the letters, going OTT, OTT, what could that stand for😂😂

It seems like you've made great strides in your year of crash-course immersion in nutrition and the rest. That gives me hope!

I've had the coil and HRT patches for two years now, that certainly saved my husband. I've also just been told (nutritionist not GP) to add in some nat progesterone cream from Wellspring to top up. Yes the menopause...utter madness.

I have been taking magnesium in the evening but haven't noticed any relaxation, by god that would be good. Long-standing mental health issues have added a great big spanner to the works so therapy is one of my hoops to crawl though😁.

But I'm definitely ordering that double B12 potion, got to be tried.

TiggerMe profile image
TiggerMeAmbassador in reply toSneedle

I used to be on patches but when I got to sticking 3 on I realised the issue and swapped to the Lenzetto spray oestrogen and Utrogestan and now I can get the dose that works!... I know if I've missed a dose as the gaslighting or weird dreams start up.

Which form of magnesium do you use... as with all these bloomin things there are many different forms 🙃

edit... thinking back utrogestan is THE most relaxing thing for the first 3 weeks if I got up for a pee I was completely punch drunk 😵‍💫rather nice.. doesn't last

Sneedle profile image
Sneedle in reply toTiggerMe

know if I've missed a dose as the gaslighting or weird dreams start up.

😆

And I thought I was bad (well I was)...still laughing...

Three patches oh yes...oh no...😬. I'm on two of 100 each, does work well as long as the skin doesn't rebel. Do you notice the Utrogestan makes you sleepy? My daughter's just been prescribed some for bad PMS/pain, and struggles with sleep. Hoping...

It's this one amazon.co.uk/Improved-Magne...

I got it as my daughter has a sensitive stomach but we all use it, and no problems for anyone. 2 capsules eveningly.

TiggerMe profile image
TiggerMeAmbassador in reply toSneedle

Oh yes, utrogestan zonks me out... lets hope it does the trick for her too 🤗

I cover a few bases by going for a complex, liking the sound of L-threonate

healthline.com/nutrition/ma...

TiggerMe profile image
TiggerMeAmbassador in reply toSneedle

I had the same when someone wrote OP... ??? I got stuck on Old Person... thought that's a bit rude... turns out it's Original Poster used when we go off track, as we so often do 😆

Sneedle profile image
Sneedle in reply toTiggerMe

🤣so many old persons here, you must have wondered...!

You go off track?! I'm still feeling sorry for poor radd having to haul you back.

radd profile image
radd in reply toSneedle

🤣

TiggerMe profile image
TiggerMeAmbassador in reply toSneedle

  radd and   SlowDragon are my guides... well actually Radd is my memory bank too!

The OP is getting it all 🤣

Sneedle profile image
Sneedle in reply toTiggerMe

A final question and then TasJSA I promise I will leave your thread alone!

How much do you take daily Eeyore100? One pipette full, less?

TiggerMe profile image
TiggerMeAmbassador in reply toSneedle

I would say 1/4 pipette (they say 1 dose is half a pipette) every other day as I'm taking a liposomal B complex which ought to be more than enough at 20,833% DV and I was at mid range to start with, so I'll drop back to twice a week.... it's a shame the testing doesn't tell you how much OTT you are 🙃

TasJSA profile image
TasJSA in reply toSneedle

It’s fine. It’s one reason I asked. I’m learning from all this as well! Thank you!

Sneedle profile image
Sneedle in reply toTasJSA

Oh good, I'm glad you're learning too. I got carried away! Thought it wouldn't happen to me but lo and behold. I'm blaming TiggerMe 😁

TasJSA profile image
TasJSA in reply toSneedle

😂

SlowDragon profile image
SlowDragonAdministrator

You will see many, many members on here take daily Vitamin B complex…..some also take daily B12 or have B12 injections

But it’s ALWAYS recommended…..test FIRST

If your B12 is very low/deficient you would need testing for Pernicious Anaemia and need B12 injections

We should test vitamin D, folate, B12 and ferritin annually when on levothyroxine as it’s extremely important to maintain OPTIMAL Vitamin levels so that levothyroxine works well

TiggerMe profile image
TiggerMeAmbassador

Have you looked back at old results? Once we get wise to these things old results offer new meaning

TiggerMe profile image
TiggerMeAmbassador

Did make I titter 🤣

He likes sublingual too 🤗

TasJSA profile image
TasJSA in reply toTiggerMe

What exactly do you all mean by ‘sublingual’?

TiggerMe profile image
TiggerMeAmbassador in reply toTasJSA

Under your tongue 😛

Drop it in and leave for 10 - 30 seconds, the straight B12 doesn't really taste of anything, the complex's they often make a bit sickly sweet mixed berry or orange flavour which I find less yucky

TasJSA profile image
TasJSA in reply toTiggerMe

Of course! Simples. 🙄😊

TiggerMe profile image
TiggerMeAmbassador in reply toTasJSA

So then you wander around doing a funny little hum to take you mind off speaking or swallowing 🤗

Sneedle profile image
Sneedle in reply toTasJSA

And the idea being you hold it there so it's absorbed through the mouth tissues, goes into the blood stream without going via the stomach.This can be done with liquid or a sub lingual tablet which dissolves.

TasJSA profile image
TasJSA

Gosh. Thank you ALL SO much! Will read and digest. Much appreciated! 👏👏

TiggerMe profile image
TiggerMeAmbassador in reply toTasJSA

It just makes for expensive pee if you take too much 🙃

waveylines profile image
waveylines

You cannot overdose on B12. It is a water based vitamin so you will excrete out what you don't need.It's important to get checked for PA before starting supplements or injections. Your GP can check this by blood tests :B12, Intrinsic factor, red blood tests, iron.

B12d. org has a symptom checker plus advice. Useful to do as you may have symptoms that are related to b12 deficiency that you are not aware of. Can print out to show GP.

Lastly if you do take a b12 supplement you need to buy either Meythlycolabamin or Hydroxacolabamin. Some people need b12 injections, especially if PA, but also if you don't respond to supplements or are very low in b12.

Best to post results up on here for advice before starting any treatment.

RedApple profile image
RedAppleAdministrator in reply towaveylines

'You cannot overdose on B12. It is a water based vitamin so you will excrete out what you don't need.'

Whilst this may be true, it does not guarantee that it won't cause any unwanted effects as it sloshes around traveling through the system. I seem to recall that some people get acne like issues with high dose B12 for example. But of course, we're all different and too much for one may not be excess for another :)

TasJSA profile image
TasJSA in reply toRedApple

👍

waveylines profile image
waveylines in reply toRedApple

Not heard of those side effects Red Apple but we are all different. I was considering it more from a medically toxic effect and the potential to kill. I do agree that it's about balance. Vitamin D we can't excrete and it can kill if taken in too large a dose or too much daily as one GP found out and as they discovered back in the 30's when they decided to give patients 300,000 iu daily! 😳

TasJSA profile image
TasJSA in reply towaveylines

Thank you. I plan to print all your comments out before seeing my GP and make a proper list of possible tests needed and solutions. And yes, I’ll post my results here before adopting any treatments. Thanks so much.

SlowDragon profile image
SlowDragonAdministrator in reply toTasJSA

don’t expect any medic to test or treat anything other than vitamin deficiency

Down to us to self supplement to maintain OPTIMAL vitamin levels

Not what you're looking for?

You may also like...

Pulse B12 Article

Pulse has just run a B12 article, which is generally excellent. I would very much wish to know that...
helvella profile image
Administrator

B12 range - Dutch B12 deficiency organisation

In my search to understand my B12 levels better, I came across this article which I thought was...
Dandelions profile image

Peripheral neuropathy hypothyroidism and B12 deficiency

Good morning. I posted this in the pernicious anemia forum as well but I thought I would post it...
EllaNore profile image

B12 levels and hypothyroidism

This is a useful paper showing low B12 is associated with hypothyroidism. Another paper indicating...
diogenes profile image
Remembering

B12 Deficiency or Hypothyroidism?

I know everyone keeps playing the guessing game but I still can't figure out if I am suffering from...
Dlonelyguy profile image

Moderation team

See all
Jaydee1507 profile image
Jaydee1507Administrator
PurpleNails profile image
PurpleNailsAdministrator
SlowDragon profile image
SlowDragonAdministrator

Content on HealthUnlocked does not replace the relationship between you and doctors or other healthcare professionals nor the advice you receive from them.

Never delay seeking advice or dialling emergency services because of something that you have read on HealthUnlocked.