These proteins are associated with various functions, including DNA repair, regulation of metabolism and body weight, and maintenance of mitochondrial health
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
Home Pharmaceuticals CYANOCOBALAMIN B12 INJECTION 1,000MCG/ML Cyanocobalamin, USP injection for intramuscular or subcutaneous use
Both compounds work on collagen and skin renewal through different mechanisms
In these cases, patients pay out of pocket