<unk>  (brand name: Arcalion®) is a precursor to thiamine (i.e., vitamin B1). It is indicated for the treatment of asthenia. Furthermore, the ability of<unk>  to reduce fatigue is considered desirable by athletes, and it is available  for over-the-counter sale as a nutritional supplement. Additionally, the demonstrated ability of<unk>  to improve memory in rats  and patients of schizophrenia suggests that it is a nootropic.
Sulbutiamine
Dropropizine
Fazadinium bromide
Methoxyphedrine
Clopenthixol
Methylnaltrexone bromide
Tasimelteon
Amfepramone