ddecd425____Norris_Cotton_Cancer_Center_Water_soluble_vitamins_Function
[Nutrient] Thiamine (vitamin B1) [Sources] Found in all nutritious foods in moderate amounts: pork, whole-grain or enriched breads and cereals, legumes, nuts and seeds [Function] 
Part of an enzyme needed for energy metabolism; important to nerve function
Vitamins: Their Functions and Sources | Health Encyclopedia | Norris Cotton Cancer Center
Function