Bericol was a Cardassian street narcotic. Dosages of less than one c.c. created a sense of intense euphoria in the user. However, larger doses caused loss of consciousness and even headaches, though no permanent damage. Cadet Bael Nomine used bericol injections to incapacitate USS Enterprise security officers Timothy Lynch and Kao in order to carry out the orders of Admiral James Leyton. (TNG - Slings and Arrows eBook: The Oppressor's Wrong)