Vitamin B1 is also know as thiamine. Vitamin B1 in the form of thiamine hydrochloride, is a white crystalline powder with a yeast like odour and a saltish taste. Vitamin B1 is a water soluble. It is vital to normal functioning of the nervous system and metabolism. Keeps digestive system functioning well. Vitamin B helps produce hydrochloric acid needed for proper digestion, supports normal growth and development. It is also great for the brain and may help with depression and assist with memory and learning.