Always good to have a reason I have also had this happen when my folate was low , it may be worth you getting it checked I had self inject my B12 every 4 weeks for the last 20+ (cannot really remember how long accurately), and 2 months ago got a similar 'electric shock tingling' all over my body - head, face, arms, hands, legs, feet etc within a couple of minutes of injecting, which lasted about 3 seconds or so
Could aid in building lean muscle mass
I specifically asked to have my B12 tested and the results were the lowest they said theyd ever seen
Certain drugs may interact with Neurobion Injection, affecting its efficacy or increasing risks of side effects
Types of Vitamin B12 Injection: In the UK, there is only one type of Vitamin B12 injection available
If the patient had none of the symptoms of the virus then the injections should go ahead