8 Medicines That Can Harm the Kidneys—Especially When Misused 💊🩺
The claim that there are “8 pills you should never take” is misleading. Many medications can be safe and medically necessary when prescribed and monitored appropriately. The risk often depends on the dose, duration, hydration, existing kidney function, and other medicines.
Medications that deserve particular caution include:
- Ibuprofen and other NSAIDs — can reduce blood flow to the kidneys and cause kidney injury, especially with dehydration or existing kidney disease.
- Naproxen — another NSAID with similar kidney risks.
- Diclofenac — prolonged or high-dose use can also affect kidney function.
- Ketorolac — carries significant kidney risk and is generally intended only for short-term use.
- Some antibiotics — certain drugs, including aminoglycosides, can be nephrotoxic and require medical monitoring.
- Certain antiviral medicines — some can affect kidney function, particularly at inappropriate doses.
- Lithium — long-term treatment can affect kidney function and requires regular monitoring.
- Some diuretics (“water pills”) — these can contribute to kidney problems indirectly if they cause excessive fluid loss or dehydration.
⚠️ Important
Don’t stop a prescribed medication because you read that it can affect the kidneys. The benefits may outweigh the risks, and your doctor may be monitoring your kidney function or adjusting the dose.
If you have kidney disease, are dehydrated, or take several medications, ask your pharmacist or doctor before using NSAID painkillers such as ibuprofen or naproxen.
If you develop very little urine, swelling, severe weakness, confusion, or sudden worsening illness, seek medical attention promptly.
