Thyroid UK
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Vit d advice for Hashimotos

Hi I have Hashimotos and after taking advice on here last week I have paid for a private Vit d test as GP refused , my result was *44 nmol/L normal range *50 -200 nmol/L

This is what came with results -

Your vitamin D levels show that you have vitamin D insufficiency. This may progress to vitamin D deficiency if you don’t take steps to increase your vitamin D levels.

We recommend supplementing with 20-50 mcg (800 -2000 iu) of vitamin D per day for twelve weeks.

I am seeing a Endo later in April and not sure what Vit d to buy. I really don’t want to wait before starting Vit d as joint and muscle pain is horrendous ! Any advice greatly appreciated, thanks in advance .

6 Replies

As you have Hashi's then the best Vit D supplement will be an oral spray as it will be absorbed better than any other form as it bypasses the stomach. BetterYou do a D3 spray in 3000iu dose and 1000iu dose.

The Vit D Council recommends a level of 100-150nmol/L and with your current level of 44 you should buy the 3000iu spray, double dose and take 6000iu daily for 8 weeks then reduce to 3000iu daily. Retest 3 months after starting and when you've reached the recommended level you will need to find your maintenance dose by trial and error, retesting twice a year to keep within the recommended range.

We taking D3 there are important cofactors needed - magnesium and Vit K2-mk7.

D3 aids absorption of calcium from food and K2-mk7 directs the calcium to bones and teeth where it is needed and away from arteries and soft tissue where it can be deposited and cause problems. BetterYou actually do a combined D3/K2-mk7 spray, or a separate K2-mk7 one.

Magnesium helps your body to use the D3. See which he form would suit you best here

D3 and K2 are fat soluble so should be taken with the fattiest meal of the day, D3 four hours away from thyroid meds. Magnesium is calming and best taken in the evening, 4 hours away from thyroid meds.


Excellent advice and thank you for taking the time to reply 😀

1 like

Hi Poppiemae - well done for getting tested yourself :)

I've tried tablets, drops, softgels & currently Dlux vitamin D & K2 spray - which I think is good as it's easier to absorb if you have stomach problems. 'Grassroots' used to recommend that you supplement 1000iu per 10 under 80, so that would be 4000iu daily for you. When I got my level up to c.80nmol my joint pain eased & I just supplement September to March now. Hopefully we're getting some sun soon, but it won't be enough to boost your levels yet (unless you go somewhere REALLY warm!) J :D

PS - see pinned post for Vitamin D booklet


Thank you so much and sunshine would be amazing ☀️🙂

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Before vitamin D supplements I was exhausted and had anxiety. As I was at 30 ( range is 30-300) my Endo considered me 'in range" and I did not qualify for supplements. He wanted to give me clomezepam!!! ( Bare in mind I live in the USA and pay out of pocket for my first $5k of medical costs each year)

Because of the information I have gleaned from this forum, I treated my self and saw good results within days.

PLEASE supplement as seaside Susie suggested!

Good luck!

1 like

Thank you so much, glad to hear you are feeling better. I have followed advice and have started on Vit d spray etc 🙂☀️


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