Pernicious Anaemia Society
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B12 and prolactin

Hi was wondering if anyone else suffers with high prolactin? I was diagnosed with PA 10years ago and currently self inject cyanocobalamin monthly.

I am being investigated for fertility issues - namely absent periods. On a blood test my prolactin was then found to be high (900). I was commenced on cabergoline 750mcg/week which has restored my periods but still no pregnancy 6 months later. I have been unable to find anything on prolactin and B12 and was wondering if anyone else had this issue or similar?

6 Replies


I found some links about B12 and fertility...

I think there is more info in book "Could It Be B12" by Sally Pacholok and JJ. Stuart.

Perhaps the PAS might be able to tell you where to look for more info on B12 and fertility.

pernicious-anaemia-society.... 01656 769 717

1 like

Hi Murfie276, I've had a hyperprolactinoma for almost 30 years and only diagnosed with Pernicious Anemia last July (although I think I've had it for 5 years and more). Cabergoline is what I was eventually on after the other medicine (cant remember the name) and it was Cabergoline I was on when I fell pregnant, so hang on in there and good luck!


Thank you for the reply!


Oh yes, I should have said earlier, remember to also ensure you have plenty folic acid, potassium and magnesium. I get my potassium by eating dates.


I having been taking pregnacare conception tablets, do you think I should supplement with something else? Thank you again for the advice.


I see theres no potassium in your pregnacare, so it wouldn't hurt you to eat a banana a day, or eat some dates. This is more so your body can use your B12 you get from your injections, rather than from a fertility view. Try not to stress over not being pregnant - I know its easier said than done - and just try to keep yourself healthy and happy ..... And relax!!! 😊


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