B12 shots cant make you sleepy or tired, but B12 deficiency can , and is most likely the reason you suffer from the chronic fatigue in the first place
A3: The standard dosage of is 1mg capsule, taken 3 times daily, preferably in the morning, midday, and early evening
Conversely, B12 deficiency may have an effect on metabolism that plays a role in obesity
A detailed review describes it as one of the major chemical forms of B12 obtained from the diet, alongside methylcobalamin and adenosylcobalamin, sitting right at the centre of how cells take up and route the vitamin (Hannibal and Jacobsen, 2022, DOI)
The number of claims for intramuscular injections, separated by fee code, was obtained from the OHIP database