“…It serves as a reminder that useful substances were not always purposefully designed or discovered. Acetylsalicylic acid (marketed as aspirin in 1899), turned out to be active on numerous targets. , Indeed, the Protein Data Bank contains 16 structures of proteins cocrystallized with aspirin, corresponding to 5–6 nonredundant targets possibly involved in different human diseases. Single-target drugs are not the rule, although they are the aim of any development program; multitarget drugs, or drug analogues hitting off-targets should not be disregarded.…”