Ramipril vs. Diltiazem
See how Ramipril and Diltiazem compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Ramipril and diltiazem are both used to treat high blood pressure, but they belong to different drug classes and work in different ways in the body.
Diltiazem also treats angina and certain heart rhythm problems, while ramipril's added approvals are for heart failure after a heart attack and cardiovascular risk reduction.
Ramipril's most common side effect is a dry cough, while diltiazem more often causes leg swelling, dizziness, and a slowed heart rate.
Ramipril vs. Diltiazem Drug Summary
Ramipril
Ramipril is an ACE inhibitor used to treat high blood pressure and to improve survival after a heart attack in people with heart failure. It's also approved to lower the risk of heart attack, stroke, or death in adults 55 and older at high cardiovascular risk. It's taken as a capsule once daily, with the dose slowly increased over several weeks.
Diltiazem
Diltiazem is a calcium channel blocker used to treat high blood pressure, chronic and vasospastic angina, and certain fast heart rhythms like atrial fibrillation. It comes as an oral tablet or capsule in immediate-release, sustained-release, and extended-release forms, plus an IV formulation for hospital use. Oral doses are typically taken once daily and adjusted over the first one to two weeks.
Ramipril vs. Diltiazem Side Effects
Ramipril
Diltiazem
Ramipril vs. Diltiazem Dosage
Ramipril
Diltiazem
| STAGE | DOSE | WHEN |
| Starting dose | 2.5 mg once daily | At the start |
| Maximum dose | Up to 20 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
| STAGE | DOSE | WHEN |
| Starting dose | 0.25 mg/kg IV bolus | At the start |
| Maximum dose | 480 mg once daily | If needed |
| Dose changes | 7 increases | As tolerated |
Ramipril
| STAGE | DOSE | WHEN |
| Starting dose | 2.5 mg once daily | At the start |
| Maximum dose | Up to 20 mg once daily | If needed |
| Dose changes | 3 increases | As tolerated |
Diltiazem
| STAGE | DOSE | WHEN |
| Starting dose | 0.25 mg/kg IV bolus | At the start |
| Maximum dose | 480 mg once daily | If needed |
| Dose changes | 7 increases | As tolerated |
Ramipril vs. Diltiazem Indications
Ramipril
Ramipril is an ACE inhibitor FDA-approved to treat high blood pressure. It's also approved to improve survival after a heart attack in people with heart failure, and to lower the risk of heart attack, stroke, or death in adults 55 and older at high cardiovascular risk.
Treats high blood pressure (hypertension)
Improves survival after a heart attack with heart failure
Lowers heart attack, stroke, or death risk in high-risk adults 55+
Often combined with a thiazide diuretic
Diltiazem
Diltiazem is a calcium channel blocker FDA-approved for high blood pressure, and for chronic and vasospastic angina. It's also used for rate control in atrial fibrillation or flutter, and to treat paroxysmal supraventricular tachycardia (PSVT).
Treats high blood pressure (hypertension)
Chronic stable angina (exertional chest pain)
Vasospastic (Prinzmetal's) angina
Rate control in atrial fibrillation or flutter
Ramipril vs. Diltiazem Pros and Cons
Ramipril
Ramipril offers a simple dosing schedule and strong outcomes data in high-risk cardiovascular patients. As a decades-old generic, it's typically well covered by insurance and pharmacy discount programs.
Pros
Once-daily dosing with just two titration steps to target dose
Outcomes data (HOPE trial) show reduced heart attack and stroke risk
Available as a low-cost generic ACE inhibitor
Does not slow heart rate the way calcium channel blockers can
Cons
Can cause a persistent dry cough that leads some to switch
Not approved for angina or heart rhythm control
Boxed warning against use in pregnancy due to fetal harm
Needs periodic monitoring of kidney function and potassium
Diltiazem
Diltiazem covers a broader range of FDA-approved uses, including angina and heart rhythm control, beyond just blood pressure. Its multiple formulations and strengths offer flexibility but add complexity to dosing and monitoring.
Pros
Also treats angina and certain fast heart rhythms
Available in immediate-release, extended-release, and IV forms
Does not cause the dry cough linked to ACE inhibitors
Long track record as an FDA-approved drug since 1982
Cons
More dose strengths to manage during titration
Can cause leg swelling and a slowed heart rate
Contraindicated in certain heart rhythm disorders
Can worsen heart failure in reduced heart pump function
Common Symptoms and Related Diseases You Can Explore
Explore a range of common symptoms the Doctronic Symptom Checker can help you understand.