TheDude - My smilax and dibencozide comments were clearly not a joke and I am offended that you would belittle me like this. I have a study from Poland, 1968, which shows that B12 deprived little children did in fact grow muscle when exposed to injectable B12. Thereby proving my point. (In fact they did also feel quite peppy and vigorous) Cy I am still waiting for a response. How dare you talk smack about this product which is right now coursing through my veins.