If you google where the original idea of truth serum came from apparantly it was to stop women lying in court in 1922 so 100 years ago males felt there was a need to garuntee the truth of women specifically testing was apparantly done on women in labour to see if they could get the truth. That's pretty fucked up that even 100 years ago men were being falsely accused of rape and in my opinion if such a substance exists every rape case should use it this would allow justice for every rape false accusation and set up