numb arm after b12 injection taking supplements how long does it take the numbness and tingling to go away from low b12? (I'm am on the correct b vitamin complex as I have taken it for Have you ever woken up

The honest boundary is that even the coherent pairing is a mechanistic hypothesis with no human validation, so the most defensible research posture is to study the single compound at its documented dose first, and treat any combination as a further, clearly-labelled research question rather than a default

Expected duration of vitamin B12 deficiency With proper treatment, symptoms of vitamin B 12 deficiency begin to improve within a few days

The injection should be administered only under medical supervision

However, do not stop prescribed B12 injections or tablets for confirmed deficiency conditions such as pernicious anaemia without consulting your GP, as this could lead to serious health consequences

Read that carefully, because its a more sophisticated point than tolerance. Its not that receptors get tired