Conversion (maths, not biological!): Can anyone... - Thyroid UK

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Conversion (maths, not biological!)

mistydog profile image
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Can anyone tell me how many iu 50mg B12 (cyanocobalamin) is? And yes, I know about the cyano/methyl, asking for a friend.

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mistydog
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SeasideSusie profile image
SeasideSusieRemembering

There's a different conversion for each nutrient when converting mcg to IU and I've not seen a conversion for B12. However, B12 is measured in mcg anyway, not IU. It's D3 we mainly see on here IU. Curious as to why you're asking?

mistydog profile image
mistydog in reply to SeasideSusie

Ah, I always thought mine was 5000 iu? A patient has been prescribed 50mg 4 x daily! Obviously their GP is not very clued up...

Gambit62 profile image
Gambit62 in reply to mistydog

think you mean 50mcg a day - this is standard for treating a deficiency caused by lack of B12 in diet.

never seen iu used for B12.

if your friend is having problems getting the correct treatment for B12 deficiency then suggest you look at the PAS forum

healthunlocked.com/pasoc

mistydog profile image
mistydog in reply to Gambit62

I'm only repeating what she told me. I did recommend she was tested for B12 and her doctor has said she's low and prescribed something, at least. But it was the 4 x a day that made me laugh!

I have pointed her at some information, and told her to research.

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