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Eight pills you shouldn’t take because they damage your kidneys

Headlines like “8 pills you shouldn’t take because they damage your kidneys” are usually oversimplified. Many medications can affect kidney function in certain situations, but that does not mean people should stop taking prescribed medicines on their own.Here are some commonly cited categories that can potentially harm the kidneys, especially with high doses, long-term use, dehydration, or existing kidney disease:

1. NSAID pain relievers

Examples include:

  • Ibuprofen
  • Naproxen
  • Diclofenac

These can reduce blood flow to the kidneys, particularly in older adults, people with kidney disease, heart failure, or dehydration.

2. Certain antibiotics

Some antibiotics, especially when given at high doses or for prolonged periods, can be nephrotoxic (harmful to kidneys). Examples include:

  • Gentamicin
  • Vancomycin

3. Some antiviral medications

Certain antivirals require kidney monitoring and dose adjustments in people with reduced kidney function.

4. Diuretics (“water pills”)

These medications are often very beneficial, but excessive fluid loss can contribute to kidney injury in some situations.

5. Proton pump inhibitors (PPIs)

Examples include:

  • Omeprazole
  • Pantoprazole

Rarely, PPIs have been associated with kidney inflammation.

6. Lithium

Lithium can affect kidney function with long-term use and requires regular monitoring.

7. Certain chemotherapy drugs

Some cancer treatments can be toxic to the kidneys and require close medical supervision.

8. Some herbal supplements

Not technically “pills” in the prescription-drug sense, but some herbal products have been linked to kidney injury, especially when ingredients are unclear or contaminated.


Who is at highest risk?

The risk of medication-related kidney damage is higher in people with:

  • Chronic Kidney Disease
  • Diabetes
  • High blood pressure
  • Dehydration
  • Older age
  • Multiple medications taken together

Important warning

Do not stop a prescribed medication because of an internet list. Many of the drugs above are highly effective and safe when used appropriately. The key issue is proper dosing, monitoring, and medical supervision.

If you’re concerned about a specific medication you’re taking, tell me its name and I’ll explain its kidney-related risks and precautions.

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