IT IS A VIT B1 SUBSTANCE & CAUSES REMYELINATION OF THE NEURONS EFFECTED IN WERNICKES ENCEPHALOPATHY. A DAILY DIETARY INTAKE OF .9-1.5 MG FOR HEALTHY MEN AND .8-1.1 MG FOR HEALTHY WOMEN IS REQUIRED. UNREFINED CEREALS, NUTS, PEAS, BEANS, YEAST ARE RICH SOURCES AND IN NON-VAG, PORK, FISH, LIVER, HEART, KIDNEYS ARE GOOD SOURCES.