Long story short, 5 months ago I started to become dizzy, not the vertigo type thing but something very strange dizziness that seems to go around my head as if there were a balloon stuck in between my temples. After waiting 2 weeks I started getting anxious as I also started having tingling in my left foot,extreme fatigue, brain fog,you name it, I also had a very bad insomnia that made everything horrible. From then I started to suffer from anxiety,etc... I've done all sort of testings (MRI,etc) which came back perfect (I expected the worst) The anxiety and worst sympotms have dissipated (yes thank god the insomnia went away) but I'm stuck with this wierd dizziness, scalp tension, and sinus pressure (exactly the way it began). One thing I asked my GP for was a B12 level check. It came back 153pg/ml and the lab stated an acceptable range of 113-300, the internist said I had nothing wrong. Last week I had a visit at the neurologyst and he said that in fact I'm deficient and that I need to take b12 and get my levels checked again after to see if I absorb it or not. He prescribed me 400mcg Folic acid / 2mcg B12. But after reading on the internet I think he got the wrong stuff for me. You ME/CFS people seem to know a lot about this, I might even have some CFS because I've always been kind of a tired person (I had lyme when I was 8 years old, they tested again and they say I don't have anything). Anyway, should I buy some methylcobalamin or what should I do? I'm totally lost, and the brainfog dizziness makes me crazy, I can't work anymore, and reading through thousand of pages is impossible... 2 months ago a doctor told me to take a b1-b6-b12 250mg/250mg/500mcg pill. After three days my body went nuts, I couldn't feel my legs properly, the doctor said I was too anxious about everything, I stopped the pills and it took me 2 weeks to walk confident again, so I'm kind of scared about taking anything. Best Regards!