Regarding glutithione, from past threads it seems Rich Vank is pro in that G is beneficial and protects B12 in some fashion and Fred is con saying G inceases excretion of B12 leading to deficiency. If one is taking 30mg of meCbl daily, is G really a threat to a dose of that size? Was taking NAC precursor to G but now I don't know if I should stop or not. Love these boards but it's tough when knowledgeable people disagree on protocols. What's the latest on G and how should I proceed? Very confused on this matter.