Diltiazem
Diltiazem , sold under the brand name Cardizem among others , is a calcium channel blocker medication used to treat high blood pressure , angina , and certain heart arrhythmias . 
<triplet> Diltiazem <subj> calcium channel blocker <obj> subject has role <subj> high blood pressure <obj> medical condition treated <subj> angina <obj> medical condition treated <triplet> high blood pressure <subj> Diltiazem <obj> drug used for treatment <triplet> angina <subj> Diltiazem <obj> drug used for treatment