Vitamin D - in range but should I supplement? - Thyroid UK

Thyroid UK

141,240 members166,488 posts

Vitamin D - in range but should I supplement?

summer01 profile image
14 Replies

Hi, I'm on 100mcg of thyroxine and my GP has agreed to give me a trial increase to 125mcg. My thyroid results are:

tsh 0.19 (0.27-4.2)

FT4 16.17 (12-23)

FT3 4.9 (3.1 - 6.8)

I have also now obtained a copy of my b12 etc results from last September. All are in range but vitamin D is at the low end, is it beneficial to supplement? I'm already taking vitamin B12 as I thought this may be low but it isn't (these results are before I started taking a supplement).

Serum vitamin B12 400 ng/L (180-900)

Serum vitamin D 83 n mol/L (50-250)

Serum folate 13.4 ug/L (4.6-20)

Any advice greatly appreciated.

Thanks

Written by
summer01 profile image
summer01
To view profiles and participate in discussions please or .
Read more about...
14 Replies
Moggie profile image
Moggie

Your B12 needs to be above 600 for you to feel the full benefit, nearer 700 would be even better.

Your vitD could also do with a boost if your calcium levels are in range. Have you ever had your calcium levels checked. The more vitD you take the more calcium your body will make and if you are taking a vitamin d suppliment with calcium (which a lot of them are) you could be storing up trouble for yourself as this might lead to painful gallstones. If I were you I would ask for a calcium test before supplimenting and then, depending on the result, find one without calcium added.

Moggie x

summer01 profile image
summer01 in reply toMoggie

Thanks moggie, I had a whole range of tests last sept, the calcium ones are;

Alkaline phosphate level 48 u/L (30-130)

Serum calcium level 2.36 (2-2.6)

Corrected serum calcium level 2.32 mol/L (2.2-2.55)

Appreciate your advice, I have a better understanding of thyroid results now but I'm clueless with the rest!

Heloise profile image
Heloise in reply tosummer01

summer, they are combining vitamin D3 with K2 to handle the calcium issue. Read up on that. D is so important for infections and even cancer and if you can't get 15 minutes of sunshine every day you are probably losing.

summer01 profile image
summer01 in reply toHeloise

Thanks Heloise, I went to the nutri centre this morning and have purchased a spray vitamin D. It's a 1000 IU per spray. It doesn't mentioned calcium. I spoke to my doctor and he said to take a 1000 IU dose and he'll check my levels when he does the thyroid blood tests in 6 weeks.

I'm goin to try to make sure I get outside a little more too - I can the train and tube to work and then sit in the office all day!

Thanks

Heloise profile image
Heloise in reply tosummer01

I think that is wise, summer. K2 assists calcium to develop in bones and teeth rather than arteries so with a high dose of D3 it's probably more important. Your 1000 i.u. is barely above minimum daily requirement in the U.S. I take 10,000 i.u. myself since I have been very low for years and this barely brings it up. You are taking D3 and NOT D2, hopefully. Even with tanning, I couldn't get levels up.

summer01 profile image
summer01 in reply toHeloise

Hi Heloise, it is D3. I don't want to overload but at the same time I'm desperate to do all I can to help myself. Hopefully this along with my thyroxine increase will help. The spray taste very nice - it's mint favoured!

Thanks for all your advice

Moggie profile image
Moggie

Are you due to see your GP in the near future - if so I would ask his/her advice. Tell him/her that you want to suppliment your VitD as you feel it is a bit low and ask if they would recommend a suppliment with or without calcium BUT make sure they are looking at your calcium levels when answering. I have had my GP and Endo tell me that I need to be supplimenting vitd with calcium and then when I questioned this they then, and only then, looked at my results, saw my calcium levels where right at the top of the range and did a double take and said "no calcium". If you make it plain to your GP that you know about the vitD/calcium connection you should be o.k.

Hope this helps

Moggie x

summer01 profile image
summer01 in reply toMoggie

Thanks moggie, that's very helpful. I don't want to take tablets that may not help or even cause problems but at the same time I want to get back to 'normal' as soon as I can. Really appreciate your help, I've read up on vitamin D and was still confused but you've explained things perfectly :-)

Thanks x

Moggie profile image
Moggie

Here is a very useful link re VitD from Barts Hosp in London. It helps explain how your body uses Vitd and also what foods to eat. See what you think.

icms.qmul.ac.uk/chs/Docs/42...

Moggie x

summer01 profile image
summer01 in reply toMoggie

That's brilliant, thanks so much. I've read loads of stuff but didn't come across anything as informative as that paper. I'll ask he doctor when. See him again next week. Thanks so much x

Moggie profile image
Moggie

p.s. and its also a very sensible attitude you have regarding not taking tablets/suppliments until you have checked out the possible complications and implications.

Moggie x

Jackie profile image
Jackie

Hi I would definitely take some vit D as hormonal and will help the thyroid. However, only if you calcium is well in range and not at the very top. Calcium must always be in range regardless of other things and vit D does put up the calcium.

Best wishes,

Jackie

summer01 profile image
summer01 in reply toJackie

Thanks Jackie, I've bought some today and my doctor has said he will test the levels again at my next thyroid function test.

Thanks

Jackie profile image
Jackie in reply tosummer01

Hi Remember it does take 3 months to reach optimum levels of D for your blood test.

Jackie

Not what you're looking for?

You may also like...

Vitamin D low and pregnant, can I supplement.

Hi, Posted earlier and a kind respondent advised I repost under this title to see if anyone has any...
Shoey1 profile image

Vitamin D.

Hi. Got my result on vitamin D level today 72 nmol/L (75-250) "low " I have been taking 1000 iu...
chocolat profile image

Vitamin D advice please.

Hi. I apologise to the people who replied to me but it seems I've accidentally somehow deleted my...

Took Doctor a week to look at my vitamin results, should I supplement before seeing Doctor?

I collected these blood test results from GP surgery last week Serum vitamin B12 level 397 ng/l [...
jamiface profile image

Exhausted... low vitamin d ..

Good evening all I started on 20mg of fultiam d a week and still feeling really rough my vitamin d...
Salsybar73 profile image

Moderation team

See all
Jaydee1507 profile image
Jaydee1507Administrator
SlowDragon profile image
SlowDragonAdministrator
RedApple profile image
RedAppleAdministrator

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.