question: Hi doctor, I have had low B 12 in the past (135 ngl) and seven years back had injections via my GP. These finished five years back. Recently have had symptoms come back and had my B12 checked and it was low, 265, but in the recommended range, however, I do take a supplement with B12 in it which would have pushed my level up a bit. My symptoms are fatigue, pins, and needles in hands and feet, slow cognition. Should I be receiving injections again?