title: Preface to Volume 41.
authors.affiliation: Editor, Profiles of Drug Substances, Excipients, and Related Methodology. Electronic address: hbrittain@centerpharmphysics.com.
authors.forename: Harry G
authors.initials: HG
authors.lastname: Brittain
mesh_terms: D002626:Chemistry, Pharmaceutical; D005079:Excipients
chemical_list: D005079:Excipients