Tired after B12 injection: Is anyone... - Pernicious Anaemi...

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Tired after B12 injection

carer999 profile image
8 Replies

Is anyone else tired the day after a B12 injection. I can be tired, no engery or get up and go, unable to think clearly and a little off balance.

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carer999
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8 Replies
Nackapan profile image
Nackapan

Yes that happens to me . By third day better. I can also feel restless the day before an injection and cant settle then sort of crash. . I think with me its because my head pains are bad sk I'm constantly distracting which is exhausting.

VellBlue profile image
VellBlue

I have very much experienced this with Methylcobalamin. I personally find Hydroxocobalamin to be better in that regard.

[I used to take Methylcobalamin fine, but after my B12 treatment was withdrawn for a while and I became very ill, I had this problem when I restarted the treatment. It felt like my body couldn't process the Methylcobalamin properly (though I have no idea if that is the case). It was helping on the one hand and giving me all these symptoms (just as you have described) on the other hand. I eventually started taking Hydroxocobalamin instead which, although can be a more painful injection, did not give me those side effects.

Ghound profile image
Ghound

Me too ! Conversely, occasionally I feel ' hyper ' and 'wired ' but mostly it's extreme tiredness. x

harmony2 profile image
harmony2 in reply toGhound

How long does it last? Does it matter what time of day you get/self-administer the injections?

Ghound profile image
Ghound in reply toharmony2

Hi, it really varies, sometimes feel very tired just that day, occasionally two days. I inject in the morning so that if the opposite happens and I feel hyper alert, it will hopefully have worn off by bed time. Hope these symptoms settle down for you. Best wishes x

harmony2 profile image
harmony2 in reply toGhound

thanks for sharing. Tele call with rheumy on 28th but self administering if no progress there.

harmony2 profile image
harmony2

How long does it last? I’m thinking about starting b12 injections

harmony2 profile image
harmony2

P. S. Does it matter what time of day you get/self-administer the injections?

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