3616
In contrast to verapamil and diltiazem , which are roughly equipotent in their actions on the heart and vascular smooth muscle , the dihydropyridine calcium channel blockers are a group of potent peripheral vasodilator agents that exert minimal electrophysiologic effects on cardiac nodal or conduction tissue .
 Chemical: verapamil; Chemical: diltiazem; Chemical: dihydropyridine; Chemical: calcium channel blockers
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: verapamil; Chemical: diltiazem; Chemical: dihydropyridine; Chemical: calcium channel blockers