Many medications are safe and beneficial when used correctly, but some can affect kidney function, especially in people who already have kidney disease, are older, are dehydrated, or take multiple medicines. The fact that a medicine is sold does not mean it is risk-free—it means its benefits and risks have been evaluated, and it should be used appropriately.
Here are 8 common types of medicines that may affect kidney health in some people:
- NSAID pain relievers
- Examples: ibuprofen, naproxen.
- Can reduce blood flow to the kidneys and may increase kidney injury risk, especially with long-term use or dehydration.
- Certain antibiotics
- Some antibiotics can affect the kidneys, particularly in people with existing kidney problems or when doses are not adjusted properly.
- Some blood pressure medicines
- Medicines that affect the kidneys’ blood flow or fluid balance may require kidney function monitoring.
- Diuretics (“water pills”)
- Used for high blood pressure or heart conditions.
- Can alter fluid and electrolyte levels if not monitored.
- Certain acid-reducing medicines
- Some long-term users of proton pump inhibitors (PPIs) have been associated in studies with kidney problems, though the risk varies and these medicines help many patients.
- Some antiviral medications
- Certain antiviral drugs can affect kidney function and require careful dosing.
- Lithium
- Used for some mental health conditions.
- Long-term use can affect kidney function in some patients, so monitoring is important.
- High-dose supplements or herbal products
- Some supplements can contain ingredients that may stress the kidneys or interact with medicines.
Protect your kidneys:
✅ Take medicines only as directed.
✅ Avoid frequent use of painkillers without medical advice.
✅ Stay hydrated, especially during illness or hot weather (unless your doctor has restricted fluids).
✅ Tell your healthcare provider about all medicines and supplements you take.
✅ Get kidney tests if you have risk factors such as diabetes, high blood pressure, or kidney disease.
Do not stop prescribed medicines suddenly because of a general warning online. If you are concerned, ask a healthcare professional to review your medication list and kidney function tests (such as creatinine and eGFR).
