Ultra Thiamin is a pure hypoallergenic B vitamin that is vital to numerous functions in the body. Thiamin (B1) is necessary for the support of blood circulation, energy production, liver detoxification and sound sleep. It is also required for the health of the nervous system, which controls your entire body, and plays a role in digestion. This unique formula has been acidified for easy digestion and absorption. Thiamin is on my top five list of most commonly prescribed supplements due to the fact that so many of my patients needed it over the years. Actually it was quite rare to find someone who didn’t need it.