heart palpitations.

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Im 29. I went to the doctor on may 11th. My heart would feel like it was going to come out of my chest. I could just be sitting on the couch to bending over to tie my shoe and I would be out of breath and heart pounding. I was told my b12 was 158. I just had my 2nd weekly injection after the 4th I will have them once a month. Is heart palpitations common? I had the other symptoms but didn't know b12 deficiency could cause such problems. Anxiety depression severe fatigue forgetfulness

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  • Posted

    I think all your symptoms are due to the low B12. Are you in the U.K.? Your treatment sounds a little different to that usually given here. If you look on the Pernicious Anaemia Society website you will find a complete symptom list.

    My own experience began with severe breathlessness, exhaustion, pins & needles, mental confusion, and a tendency to succumb to any illness doing the rounds. If there was a cold or bad throat or sinus problem I would get it! I ended up having so many courses of antibiotics that my GP decided to do more blood testing, and so I was diagnosed.

    i hope that now you are getting injections you will begin to feel better. Have you been tested for levels of ferritin, folate and VitD, these can be low too and you need them to utilise the B12 you are being given.

    Best wishes


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    • Posted

      Thank you I will check out that website. I am actually from the U.S. I have not heard of those other tests but I will bring them up at my next appointment. What is the treatment in the U.K
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    • Posted

      Treatment of cobalamin deficiency

      "Current clinical practice within the U.K is to treat cobalamin deficiency with hydroxocobalamin in the intramuscular form outlined in the British National Formulary, BNF, 

      Standard initial therapy for patients without neurological involvement is 1000 µg intramuscularly (i.m.) three times a week for two weeks, then every three months. 

      The BNF advises that for Pernicious anaemia and other macrocytic anaemias patients presenting with neurological symptoms should receive 1000 µg i.m. on alternative days until there is no further improvement, then 1 mg every 2 months."

      The only reason I am on cyanocobamalin is that when I was diagnosed with P.A in 1972 that was the only form of B12 available and when hydroxocobaamalin was introduced in the 1980s I had an allergic reaction to it.

      However, I'm still "clivealive" at 75.


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  • Posted

    Yes, I was having that and finally got diagnosed with SVT. I still have the palpitations but not to the point of it knocking the wind out of me. I take Toprol pill daily to help. My Doc says this will be with me for life along with so many other things that occurred due to fatally low B12 for a long time. 
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  • Posted

    I'm not sure whether you are saying that your heart palpitations started after your B12 injections or whether you were having them before.

    I'm not a medically trained person but I've been having cyanocobamalin B12 (like you) injections for over 45 years and have noticed that I also have had slight palpitaiions for a short while afterwards on occasion, but never enough to worry about it. I put it down to the B12 getting to work repairing the damage done to my nervous system caused by the B12 deficiency/P.A.

    As Marion righly says 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 works closely with vitamin B12 in making red blood cells and helps iron function properly in the body. 

    I wish you well and hope things settle down as your treatment progresses

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