Traveler said...
............. I stopped the injections and switched to sublingual methylcobalamin (methyl B12) and no longer had that issue..........
I never took the injection route however, I've been taking the methyl B12 for the past few months now and I have regained most of my energy back. It is also helping with my paresthesia. I checked with an Acupuncturist and he said that he was never successful treating paresthesia but that methyl B12 seemed to help.