Derbisol
From Wikipedia, the free encyclopedia
Derbisol is a fictitious drug used in questionnaires by some academic surveys to test the reliability of answers received by students.
Some such questionnaires ([1] etc) give Derbisol the slang names "DB" and "derbs" and "dirt".
This drug information web site (in Korean) seems to use "Derbisol®" as a trade name for Clobetasol.