can i inject myself with b12 Patients self-injecting vitamin without telling their GP, finds study Treating Severe Vitamin B12 Deficiency

This medication should be prescribed and monitored by a licensed healthcare professional familiar with the condition being addressed and the specific applications of the medication

Customer service and recourse options prove more accessible when dealing with local companies operating under Canadian regulations

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

Low Vitamin B12 Levels: An Underestimated Cause Of Minimal Cognitive Impairment And Dementia

Alcohol can interfere with B12 absorption, making it harder to maintain adequate levels