Arcalion is a man-made chemical similar to vitamin B1 (thiamine). Unlike vitamin B1, which dissolves in water, sulbutiamine dissolves in fats. Arcalion (Sulbutiamine) is able to increase thiamine levels in the brain. It is thought to have mild stimulant effects. Arcalion is used for weakness, fatigue, to enhance athletic performance, and also for Alzheimer’s disease, stroke and dementia in Parkinson’s disease.