Benzotript
Benzotript, also known as N--L-tryptophan, is a muscle relaxant that inhibits gastric secretion and was never marketed. It is a tryptamine derivative and the N- analogue of the amino acid tryptophan. Similarly to proglumide, the drug acts as a competitive and non-selective cholecystokinin receptor antagonist. Other more potent tryptophan derivatives have also been developed as cholecystokinin antagonists.