Pernicious Anaemia Society
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Blood tests

Blood tests

Hello. I have been off b12 tablets for a month as i felt like they werent doing that much. I managed to get my levels up to 511ng/l range 191 - 663 ng/l

I got my b12 retested on wednesday and i have had these results.

Surely i shouldnt have dropped so much in one month, if the tablets as my doctor said are working?

I think i have an absorbtion problem, just need to convince my doctor.....

3 Replies

Hi Cazzie91 are you saying that you got your B12 levels up to 511ng/l by taking tablets and then stopped them for a month? How low were you before you started supplementing?

What if any of your symptoms improved whilst you were taking the tablets?

Do you know what your Folate level was and is now?

Does your diet include food rich in B12 like red meat, fish, eggs, poultry & dairy produce?

What medications are you on?

Do you have "tummy troubles"?



I took the tablets for 2 months. I have now stopped them for 5 weeks. I raised my levels from 265 ng/l.

I still had tinnius, when on tbe tablets only real notable change was i stopped yawning.

My folate dropped to 3 dont know the ranges unfortuately and i dont know it now.

I do have a lot of tummy troubles, doctors have put it down to Ibs, my mum had crohns and PA but they dont listen to that part.

I eat meat everyday now, where as about 2 months ago i probably ate chicken every other day, i have increased thst to pork as well now. I eat cheese i would sag a couple of times a week. But nothing else diary

Only medication i am on at the moment is iron tablets as my ferritin was boarderline


There is a complex interaction between folic acid, vitamin B12 and iron. A deficiency of one may be "masked" by excess of another so the three must always be in balance.

Folic acid is crucial for proper brain functioning and plays an important role in mental and emotional health and works closely with vitamin B12 in making red blood cells and helps iron function properly in the body.

Your IBS and family history of P.A. puts you at risk of developing a B12 deficiency and I would suggest either getting your folate tested or buy some Folic Acid 400μg tablets over the counter from your local chemist and I think it would be wise to restart the B12 supplements too as it seems unlikely that your doctor is going to do anything.

Be aware that I am not a medically trained person but I have had P.A. for over 45 years


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