Sulbutiamine is a synthetic lipophilic derivative of thiamine (vitamin B1), primarily used in the field of medicine as a cognitive enhancer. It is often prescribed to improve memory, focus, and overall mental clarity, making it beneficial for individuals experiencing fatigue or cognitive decline. Additionally, it is utilized to treat asthenia, a condition characterized by physical weakness and lack of energy. In some cases, it is also employed to support recovery in patients with neurological disorders or those recovering from chronic illnesses. Sulbutiamine is sometimes included in nootropic supplements for its potential to boost brain function and reduce mental fatigue.