The systematic review protocol was registered in the International Prospective Register of Systematic Reviews (PROSPERO), registration number: CRD42024554513 (Available from) ( 2.2 PICOs question The primary research question addressed in this review was: What is the effectiveness of sublingual/oral administration of Vitamin B12 alone or compared to other forms of administration (e.g., intramuscular injection)?
There is no recommended maximum
In short, if you experience worse tingling after B12 injections, it might result from the B12 deficiency itself, rather than the treatment or injections
How long does it take to get results after the treatment
This relieves symptoms of anaemia, including tiredness, fatigue, sore mouth and tongue, numbness and tingling in the arms and legs, memory loss and depression