Hi everyone! I have vitamin B6 deficiency whilst blood levels are normal/elevated (even without substitution) and I cannot substitute B6 due to intolerance (even small amounts lead to trembling and higher heart rate). I have also low alkaline phosphatase. Has anyone an idea what this could be and how it could be overcome? I already did long searches, but I cannot find the answer. I also tried several things (taurine, B2; Zinc and magnesium are standard). No change. I do have magnesium deficiency but supplement it. Any ideas?