Forums Ask for advice B12 deficiency Reply To: B12 deficiency March 20, 2018 at 1:51 pm #370 Emma 14 Posts Yep me – been having injections for about 15 years now. Originally after loading dose I was on an injection every 12 weeks but I was getting symptoms still so I went to a specialist who advised my GP to switch me to every 8 weeks. Now I have asked for them to be more frequent but so far the docs have resisted. I am also low on folate currently and taking folic acid so hoping that will help with my symptoms once levels are back up. Injections don’t really hurt, sting maybe and I get a dead arm type feeling for a few mins afterwards.