8 Medicines That Can Affect Kidney Health
The headline “eight pills you shouldn’t take” is too broad. Many medicines on this list can be appropriate and beneficial when prescribed correctly. The concern is that some can injure the kidneys, accumulate when kidney function is reduced, or require dose adjustments.
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Eight important examples are:
Ibuprofen and other NSAIDs — including naproxen, diclofenac, and meloxicam. Regular or high-dose use can reduce kidney blood flow and cause acute kidney injury, particularly with dehydration or existing kidney disease.
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Certain antibiotics — some can directly affect the kidneys, while others need dose adjustments when kidney function is reduced.
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National Kidney Foundation
Certain antivirals — some are cleared through the kidneys and can accumulate or cause kidney-related adverse effects if dosing isn’t appropriate.
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National Kidney Foundation
Lithium — long-term or high-dose treatment can affect kidney function and cause problems with the kidney’s ability to concentrate urine.
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Proton-pump inhibitors (PPIs) — medicines such as omeprazole are associated with certain kidney problems, although this doesn’t mean everyone taking them will develop kidney disease.
High-dose aspirin — aspirin at doses above 325 mg/day has kidney-related concerns, particularly in people with CKD. Low-dose aspirin prescribed for cardiovascular protection is a different situation.
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National Kidney Foundation
Oral sodium-phosphate bowel preparations — some products used before colonoscopy can cause serious kidney injury and should be avoided in certain higher-risk people.
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National Kidney Foundation
Some diuretics and blood-pressure medicines — these aren’t inherently “kidney damaging.” However, during severe dehydration or illness, certain combinations can contribute to acute kidney injury and may require temporary medical guidance.
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One particularly risky combination
The combination of an NSAID + an ACE inhibitor/ARB + a diuretic can substantially increase the risk of acute kidney injury, particularly when you’re dehydrated from vomiting, diarrhea, fever, or poor fluid intake.
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Don’t stop prescribed medicines yourself
This is especially important because some medicines that affect kidney function can actually protect the kidneys in the right circumstances. ACE inhibitors and ARBs, for example, can slow kidney disease and delay kidney failure in appropriate patients.
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If you have kidney disease, diabetes, high blood pressure, or take several medications, ask your doctor or pharmacist to review all prescription medicines, OTC drugs, and supplements and check whether your doses are appropriate for your kidney function.
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National Kidney Foundation
Bottom line: The biggest everyday medication concern is often unnecessary or prolonged NSAID use, especially when you’re dehydrated. The right approach isn’t to avoid all eight medicines—it’s to use them appropriately and monitor kidney function when necessary.
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