Diltiazem Pharmacology

Diltiazem is a non-dihydropyridine calcium channel blocker that can be used in atrial fibrillation as well as hypertension. One big downside to diltiazem is that it does have a few drug interactions via CYP3A4. Aripiprazole, apixaban, and certain statins are all examples of medication that can have concentrations increased by adding diltiazem to a patient’s regimen. Diltiazem works a little differently from dihydropyridine calcium channel blockers (like amlodipine) as it works on the heart AND the vessels. Be sure to check out our free Top 200 study guide – a 31 page PDF that is yours for FREE!