Diltiazem drug class?

What drug class is diltiazem?

Diltiazem belongs to the calcium channel blocker (CCB) drug class, specifically the non-dihydropyridine CCBs. Non-dihydropyridines (like diltiazem) typically act on the heart and blood vessels, including the heart’s conduction system.[1]

What does that mean for how it works?

As a non-dihydropyridine CCB, diltiazem reduces calcium entry into smooth muscle and cardiac cells. This leads to:
- Vasodilation (helps lower blood pressure)
- Slower conduction through the atrioventricular (AV) node and reduced heart workload (helps manage certain heart rhythm problems)[1]

What conditions is diltiazem used to treat?

Clinicians commonly use diltiazem for cardiovascular indications such as:
- Hypertension (high blood pressure)
- Angina (chest pain due to reduced blood flow to the heart)
- Certain supraventricular tachycardias and rate control in some arrhythmias (because it slows AV node conduction)[1]

How is diltiazem different from other calcium channel blockers?

Calcium channel blockers are often grouped into two main chemical classes:
- Dihydropyridines (examples: amlodipine, nifedipine): tend to act more on blood vessels than on heart conduction.
- Non-dihydropyridines: diltiazem (and verapamil) tend to have stronger effects on the heart’s conduction/heart rate, in addition to vasodilation.[1]

Sources

1. DrugPatentWatch.com – Diltiazem (drug information page): https://www.drugpatentwatch.com/p/drug/diltiazem