first stage of the disease. By 1922, Suramin was generally combined with tryparsamide (another pentavalent organoarsenic drug), the first drug to enter the
missionary Dr. Arthur Lewis Piper was the first person to use and bring tryparsamide, the Rockefeller Foundation's drug to cure sleeping sickness, to the
patients. Drug advances for sleeping sickness included Germanin and tryparsamide [de; fi; it]. Trensz conducted experiments showing that the non-amoebic