cholestyramine vs spironolactone
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Side-by-side comparison of cholestyramine and spironolactone. 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
Cholestyramine: Hyperkalemic metabolic acidosis has been reported with concomitant use ( 7.5 ). 7.5 Cholestyramine Hyperkalemic metabolic acidosis has been reported in patients given spironolactone concurrently with cholestyramine.
Questran
Aldactone
Cholestyramine is a medicine that helps lower high cholesterol levels in your blood. It works by preventing your body from absorbing cholesterol in the intestines.
Spironolactone is a medicine that helps remove extra fluid from your body and lower blood pressure. It also helps your heart work better if you have heart failure.
This medicine is used with a diet to lower high cholesterol, especially LDL cholesterol (the "bad" cholesterol). It may also help if you have high triglycerides, but it's not the best choice if high triglycerides are your main problem. Lowering cholesterol helps reduce your risk of heart disease.
Spironolactone is used to treat heart failure by reducing fluid build-up and helping you live longer. It also treats high blood pressure, which can lower your chance of having a stroke or heart attack. This medicine can also manage fluid build-up caused by liver problems or a kidney problem called nephrotic syndrome. It can also treat a condition where your body makes too much of a hormone called aldosterone.
Cholestyramine is a resin that binds to bile acids in your intestines. Bile acids help digest fats, including cholesterol. By binding to bile acids, cholestyramine prevents them from being reabsorbed, so your body uses cholesterol to make more bile acids, which lowers cholesterol levels in your blood.
Spironolactone belongs to a class of drugs called aldosterone antagonists. It works by blocking the effects of aldosterone, a hormone that causes your body to hold onto salt and water. By blocking aldosterone, spironolactone helps your body get rid of extra fluid and salt, which lowers blood pressure and reduces strain on the heart.
- • Constipation
- • Breast enlargement in men
- • Dizziness
- • Headache
- Diarrhoea 1,631
- Fatigue 877
- Nausea 783
- Arthralgia 621
- Headache 543
- Dyspnoea 10,389
- Fatigue 8,178
- Nausea 7,818
- Diarrhoea 7,418
- Acute Kidney Injury 6,785
Since cholestyramine can affect how your body absorbs other medicines, take other drugs at least 1 hour before or 4 to 6 hours after taking cholestyramine.
Spironolactone can cause your potassium levels to get too high, which can be dangerous. Your doctor will check your potassium levels regularly, especially if you have kidney problems or are taking other medicines that can raise potassium. This medicine can also cause low blood pressure or make kidney problems worse. Tell your doctor if you have side effects.
Tell your doctor if you are pregnant or plan to become pregnant. Cholestyramine may affect how you absorb vitamins, so your doctor may recommend supplements. Talk to your doctor about the risks and benefits of taking this medicine while breastfeeding.
Spironolactone may affect the sex organs of a baby boy if taken during pregnancy. Talk to your doctor if you are pregnant or plan to become pregnant. It is not known if spironolactone passes into breast milk, so talk to your doctor about the best way to feed your baby if you are taking this medicine.
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How to Read This cholestyramine vs spironolactone Comparison
cholestyramine is classified in the Bile Acid Sequestrant drug class, while spironolactone sits within the Potassium-Sparing Diuretic / Aldosterone Antagonist 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, cholestyramine has 4,455 submissions while spironolactone has 40,588. 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 taking these two drugs together can cause a dangerous buildup of potassium and acid in your blood.. 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 cholestyramine or spironolactone.
Registry boundary: This comparison displays source-record fields and does not provide individualized medical direction.