.: B12 injection should not cause sleepiness or tiredness. It is not a common side effect. Advise: B12 is a vitamin and not a lipotropic. B12 is not fda approved as a lipotropic and it does not work. Would advise you not to try it as a lipotropic medication.
Answered 6/24/2014
5.1k views
B 12: Very unusual to require vitamin b-12 injections without a full evaluation showing deficiency and the reason for it. It is very unlikely, however, to be making you feel tired and sleepy.
Answered 5/15/2013
5.1k views
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