paired studies were carried out on 18 healthy male volunteers ( 20.9 +/- 1.9 years ; mean +/- s.d . ) to compare the effect of oral doses of the h2-receptor antagonists , ranitidine and cimetidine , on the rate of gastric emptying of radiolabelled solid and liquid test meals .
C2757005
h2-receptor
C0008783
cimetidine