Diazepam (Valium), which meets most of the above requirements extremely well, is a tranquillizer of the benzodiazepine class, causing muscle relaxation and reduction of skeletal muscle tone (Ranidall, Heise, Schallek, Bagdon, Banziger, Boris, Mol, and Abrams, I96I). This action appears to be mediated through the central nervous system, for it can be shown that the stimulation of muscle through ...