Many doctors were not happy with how Grünenthal advertised the new sedative: the words “absolute non-toxic” created some discontent. On March 3, 1958, Dr. Werner, a later defendant at the trial, wrote a note to Grünenthal staff asking them to soften the wording a little: instead of “absolute non-toxic”, ads should say “practically non-toxic” or simply “a-toxic.”

Source: Anklageschrift (indictment) from 1967, today archived at the National Archives of North Rhine-Westphalia in Duisburg, Germany (Rheinland Division, Gerichte Rep. 139, No. 1–396), pp. 61-62.