Physicians like Vesalius improved upon or disproved some of the theories from the past. The main tomes used both by medicine students and expert physicians were Materia Medica and Pharmacopoeia.zur Übersicht: Arzneimittelinformationssystem AMIce Da­ten­ban­k­in­for­mittelalter­tio­nen AMI­ce Arz­nei­mit­tel Da­ten­ban­k­hinein­for