the h2-receptor antagonists dose-dependently inhibited the histamine-stimulated acid production ( ic50 for cimetidine = 10 ( -5 ) m and 10 ( -6 ) m and for ranitidine = 10 ( -5 ) m and 2 x 10 ( -7 ) m for high and low concentrations of histamine , respectively ) .
C2757005
h2-receptor antagonists
C0008783
cimetidine