during the months of july 1977 and july 1985 , students from the united states participated in a double-blind , placebo-controlled trial examining the effectiveness of liquid bismuth subsalicylate ( bss ) ( 1977 ) and two dosages of the tablet formulation of bss ( 1985 ) in preventing diarrhea while in guadalajara , mexico .
C0053792
bss
C0011991
diarrhea