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Ramipril

Prescription ·Strong evidence ·Reviewed May 2026

Ramipril is an ACE inhibitor with strong evidence from the HOPE trial showing cardiovascular risk reduction in high-risk patients without heart failure or low ejection fraction. It is used for hypertension, heart failure, and cardiovascular risk reduction in patients at high risk.

Evidence tier
Strong
Indexed sources
10 1996–2025
Interactions
6
Depletes
1 nutrient
Read the sources → Compare profiles
What it's good for
  • Reduces cardiovascular death, MI, and stroke in high-risk patients (HOPE trial)6,2
  • Lowers blood pressure
  • Reduces heart failure progression5,7
  • Provides nephroprotection in diabetes
What to watch for
  • Dry cough
  • Hyperkalemia
  • Hypotension
  • History of angioedema with ACE inhibitors
  • Pregnancy

The bottom line

Evidence rating strong. Most-documented uses: reduces cardiovascular death, mi, and stroke in high-risk patients (hope trial), lowers blood pressure, reduces heart failure progression. 10 sources indexed (1996–2025), with 6 interaction records on file.

The science

How it works, mechanistically.

Core mechanism

Prodrug converted in the liver to the active metabolite ramiprilat, a potent ACE inhibitor. Blocks conversion of angiotensin I to angiotensin II, reducing vasoconstriction, aldosterone release, and sympathetic activity. Enhances bradykinin-mediated vasodilation and has endothelial protective effects.

Class
ACE Inhibitor
Dosing

Dosing & protocol.

Common range
1.25–20 mg daily in 1–2 divided doses (as prescribed by your physician)
Recommended form
Oral capsule

Can be taken with or without food; capsule can be opened and sprinkled on applesauce for patients with swallowing difficulty

Depletions

What it depletes.

Nutrients this medication can lower over time, and what to replace.

Zinc

Mild

ACE inhibition has been associated with increased urinary zinc excretion and altered taste in some long-term users.

Replace Zinc PicolinateMonitor Serum zincOnset Usually over weeks to months
Safety

Full safety detail.

Side effects

  • Dry cough
  • Hyperkalemia
  • Hypotension
  • Dizziness
  • Angioedema (rare)
  • Elevated serum creatinine
  • Fatigue

Contraindications

  • History of angioedema with ACE inhibitors
  • Pregnancy
  • Bilateral renal artery stenosis
  • Concurrent aliskiren in diabetic patients
  • Concurrent sacubitril/valsartan (within 36 hours)
Interactions

Interaction records.

SeriousConflict

Potassium

Ramipril reduces aldosterone secretion, creating significant hyperkalemia risk with potassium supplements.

Recommendation: Avoid potassium supplements unless prescribed. Monitor serum K+ regularly.

SeriousCaution

Lithium Orotate

Ramipril reduces sodium reabsorption and lowers glomerular filtration, which causes the kidney to retain lithium. Case reports with ACE inhibitors describe lithium toxicity developing within 3 to 5 weeks of starting the medication, sometimes with serum lithium concentrations rising more than 30%. Lithium Orotate doses are smaller but use the same renal pathway and the margin to neurotoxicity is narrow, particularly in older adults or anyone who becomes dehydrated.

Recommendation: Avoid Lithium Orotate while taking ramipril. If you must combine them, keep the dose low, stay well hydrated, and ask your prescriber to check a serum lithium level after 1-2 weeks. Hold the supplement during any vomiting, diarrhea, or fever.

InfoSynergy

Coenzyme Q10

Coenzyme Q10 lowers blood pressure modestly through improved endothelial function and reduced oxidative stress. A meta-analysis of 12 clinical trials reported meaningful systolic reductions. Combined with an ACE inhibitor like ramipril, the effect is generally additive and well tolerated, which can help patients with residual hypertension or heart failure.

Recommendation: If your blood pressure is well controlled on ramipril alone, monitor at home before adding CoQ10. A typical dose is 100-200 mg/day with a fat-containing meal. Recheck blood pressure within 2-4 weeks and tell your prescriber so any ramipril dose adjustment can be made.

InfoSynergy

Garlic Extract

Garlic Extract lowers blood pressure modestly and has independent ACE-inhibitory activity in vitro. When combined with ramipril the effects are additive, which is generally beneficial in uncontrolled hypertension but can produce mild hypotension if blood pressure is already at goal.

Recommendation: If your blood pressure is already well controlled on ramipril, monitor at home before and after starting Garlic Extract. Typical aged garlic doses are 600-1200 mg/day. Tell your prescriber so your ramipril dose can be adjusted if needed.

InfoSynergy

Fish Oil

Fish Oil reduces blood pressure modestly (about 3/1.5 mm Hg in hypertensives) and has independent renoprotective effects through suppression of ACE activity, reduced angiotensin II formation, and downregulation of TGF-beta. Combined with ramipril the effects are additive and well tolerated.

Recommendation: Fish Oil 1-3 g/day of combined EPA+DHA is a reasonable add-on; monitor home blood pressure after starting and tell your prescriber. Higher doses (greater than 3 g/day) may modestly raise bleeding risk.

InfoSynergy

Pine Bark Extract

Pine Bark Extract (Pycnogenol) lowers blood pressure (about 3 mm Hg systolic and 3 mm Hg diastolic in a meta-analysis) and has independent ACE-inhibitory activity. Two trials specifically tested it as an adjunct to ramipril in hypertensive patients and reported significantly greater blood pressure reduction than ramipril alone. The combination is well tolerated.

Recommendation: Pine Bark Extract 100-200 mg/day is a typical research dose; monitor home blood pressure after starting and tell your prescriber so your ramipril dose can be reviewed. Mild hypotension is possible if BP is already at goal.

Search all 6 interaction records for Ramipril →

Sources

Sources, by evidence tier.

Numbered references. Citations throughout the page link here.

Meta-analyses & systematic reviews

1

Randomized controlled trials

4

Reference material

5
Keep exploring

Deep dives & adjacent profiles.

Goal hubHeart & Cardiovascular
LisinoprilPrescriptionEnalaprilPrescriptionValsartanPrescriptionSpironolactonePrescriptionSacubitril/ValsartanPrescriptionMetoprololPrescription

This page is educational. Do not start, stop, or change a supplement or medication based on it without checking with a qualified healthcare professional.

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NutriStack is an informational and organizational tool, not a medical service, and not a substitute for professional advice. Always consult a qualified healthcare professional before starting, stopping, or changing any supplement or medication.