Their efficacy may not have been scientifically tested to the same degree as the drugs listed in the table above. However there may be historical, cultural or anecdotal evidence linking their use to the treatment of Anxiety and Stress.
During the Great Leap Forward, farming was organized into communes and the cultivation of private plots forbidden. Iron and steel production was identified as a key requirement for economic advancement. Millions of peasants were ordered away from agricultural work to join the iron and steel production workforce.
Read the quotation from Upton Sinclair's The Jungle: There would be meat that had tumbled out on the floor, in the dirt and sawdust, where the workers had tramped and spit uncounted billions of consumptive germs.. the public was outraged and demanded legislative reform from the government.