Thiamine hydrochloride, is a form of vitamin B1, we can find in many foods, like whole grains, seeds and nuts, beef and pork products, and milk etc. When grains are processed into white bread, the thiamine is stripped out, so some manufacturers add it back in by fortifying the product. However the body doesn’t store thiamine, so the people always need intake regularly because thiamine plays an important role in the body. It’s essential for aerobic metabolism, cell growth, transmission of nerve impulses and acetylcholine synthesis. If the body is deficient in vitamin B1, it will be life threatening, especially when you are suffering from chronic diseases. As the manufacturer and supplier of thiamin Hcl, ours conforms to USP, EP.