Its best to consult with a healthcare professional for personalized recommendations
They are also contraindicated or people with vision problems, Lebers disease, kidney failure, liver failure, folic acid deficiency or any type of systemic infection
Once injected, it is converted into these active forms, which serve as essential cofactors in key metabolic processes such as DNA synthesis, fatty acid metabolism, and neuronal myelin formation
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
Since youre absorbing smaller amounts over time, it may take longer to notice improvements