We'll continue to follow the process closely and share updates as they become available
Neurol Sci 1990;19:472
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
Vorstman JAS, Parr JR, Moreno-De-Luca D, Anney RJL, Nurnberger JI, Hallmayer JF
Common side effects (may affect up to 1 in 10 people): * Pain, redness, or swelling at the injection site * Nausea * Headache Uncommon side effects (may affect up to 1 in 100 people): * Diarrhea * Dizziness * Allergic reactions such as skin rash, itching, or hives Rare side effects (may affect up to 1 in 1,000 people): * Severe allergic reaction (anaphylaxis) with symptoms like difficulty breathing, swelling of the face or throat, and a drop in blood pressure