eplerenone vs potassium citrate

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Side-by-side comparison of eplerenone and potassium citrate. Data from FDA drug databases (Orange Book, NDC Directory, recalls, shortages) covering 20,000+ approved drugs, plus CMS pricing; see our methodology.

minor Known Drug Interaction

7.3 Renin-Angiotensin-Aldosterone System Inhibitors Drugs that inhibit the renin-angiotensin-aldosterone system (RAAS) including angiotensin converting enzyme (ACE) inhibitors, angiotensin receptor blockers (ARBs), spironolactone, eplerenone, or aliskiren produce potassium retention by inhibiting aldosterone production.

Drug Class
eplerenone Aldosterone Antagonist
potassium citrate Urinary Alkalinizer
Type
eplerenone Prescription
potassium citrate Prescription
Summary
eplerenone

Eplerenone (Inspra) helps you live longer if you have heart failure after a heart attack. It also lowers blood pressure if you have high blood pressure.

potassium citrate

Potassium citrate is a medicine that helps manage kidney problems. It can help prevent kidney stones and balance the acid levels in your urine.

What It Treats
eplerenone

Eplerenone is used to help people with heart failure who have had a heart attack live longer. It is also used to treat high blood pressure in adults. Lowering blood pressure helps reduce the risk of strokes and heart attacks.

potassium citrate

This medicine is used to manage renal tubular acidosis (RTA) with calcium stones. It also treats hypocitraturic calcium oxalate nephrolithiasis, which is a condition that causes calcium oxalate kidney stones. Potassium citrate can also help with uric acid kidney stones, whether or not you also have calcium stones.

How It Works
eplerenone

Eplerenone blocks a hormone called aldosterone in your body. Aldosterone can cause your body to hold onto too much salt and water, which can raise blood pressure and worsen heart failure. By blocking aldosterone, eplerenone helps lower blood pressure and reduce strain on the heart.

potassium citrate

Potassium citrate works by increasing the amount of citrate in your urine. This makes your urine less acidic. Less acidic urine helps prevent kidney stones from forming.

Common Side Effects
eplerenone
  • High potassium levels in your blood
  • Increased creatinine levels
potassium citrate
  • Abdominal discomfort
  • Vomiting
  • Diarrhea
  • Loose bowel movements
  • Nausea
FAERS Reports
eplerenone
  • Dyspnoea 1,083
  • Cardiac Failure 939
  • Acute Kidney Injury 905
  • Hypotension 859
  • Fatigue 659
potassium citrate
  • Fatigue 346
  • Nausea 320
  • Diarrhoea 310
  • Pain 300
  • Nephrolithiasis 270
Serious Warnings
eplerenone

Eplerenone can cause high potassium levels in your blood, which can be dangerous. Your doctor will check your potassium levels before you start taking eplerenone and regularly while you are taking it. People with kidney problems, diabetes, or who take certain other medicines are at higher risk.

potassium citrate

This medicine can cause high potassium levels in your blood, which can be dangerous. You should not take this medicine if you have kidney failure, uncontrolled diabetes, or other conditions that make it hard for your body to get rid of potassium. If you have severe vomiting, stomach pain, or bleeding, stop taking this medicine and contact your doctor immediately.

Pregnancy
eplerenone

It is not known if eplerenone can harm your unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if eplerenone passes into breast milk. Talk to your doctor about the best way to feed your baby if you are taking eplerenone.

potassium citrate

It is not known if this medicine will harm an unborn baby. Talk to your doctor if you are pregnant or plan to become pregnant. It is also not known if this medicine passes into breast milk, so talk to your doctor if you are breastfeeding.

How to Read This eplerenone vs potassium citrate Comparison

eplerenone is classified in the Aldosterone Antagonist drug class, while potassium citrate sits within the Urinary Alkalinizer class. Drugs from different classes work through distinct mechanisms, so a head-to-head comparison illustrates trade-offs rather than equivalence. Both drugs are prescription-only, so a licensed provider must authorize use.

Adverse event totals above are pulled from the FDA's Adverse Event Reporting System (FAERS). For these top-ranked reactions alone, eplerenone has 4,445 submissions while potassium citrate has 1,546. Those figures reflect cumulative reporting volume, not per-patient risk, so older, widely dispensed drugs typically look worse on count alone. These two drugs have a known minor interaction flagged in FDA labeling, attributed to eplerenone changes how your body handles minerals, making it harder for your kidneys to flush out extra potassium.. Serious warnings, pregnancy guidance, and contraindications can differ even when indications overlap.

A table cannot represent individual circumstances. Data here is sourced from FDA Structured Product Labels (SPL) and FAERS, both of which update as manufacturers and clinicians submit new information. This registry does not provide medical, treatment, substitution, or medication-change directions for eplerenone or potassium citrate.

Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.