Clinical pharmacy involves pharmacists in direct patient care concerning optimizing medicines and promoting health awareness and disease prevention. The whereabouts of the field can be traced to Scribonius Largus, a renowned physician and pharmacist in ancient Rome. Although Largus served as an imperial physician, he has also been an exemplary pharmacist authoring a comprehensive pharmacognosy textbook and dedicated a big part of his life to improving pharmacotherapy and advancing ethics in the field. Revisiting his contributions provides valuable lessons for contemporary clinical pharmacists.