the degrees of interactions between the h2-receptor antagonists , cimetidine and ranitidine , and several beta-adrenoceptor blockers were investigated in healthy volunteers following 7 days of oral monotherapy with penbutolol , propranolol , metoprolol , pindolol and atenolol , and after co-administration with each of the h2-receptor antagonists .
C0008783
cimetidine
C2757005
h2-receptor antagonists