Some medicines can affect kidney function, especially when taken in high doses, for long periods, or by people who already have kidney problems. This does not mean everyone should stop these medicines—many are safe and beneficial when used correctly and under medical guidance.
8 types of pills that may harm the kidneys in certain situations
- Nonsteroidal anti-inflammatory drugs (NSAIDs)
- Examples include Ibuprofen and Naproxen.
- Frequent or high-dose use can reduce blood flow to the kidneys and increase risk of kidney injury, especially in older adults or people with kidney disease.
- Certain antibiotics
- Some antibiotics can affect the kidneys, particularly in people with existing kidney problems or when doses are not adjusted.
- Some blood pressure medicines
- Certain medications that affect kidney blood flow or potassium levels may require kidney function monitoring.
- Diuretics (“water pills”)
- These can change fluid and electrolyte balance. Problems may occur if dehydration develops.
- Certain acid-reducing medicines
- Some long-term users of proton pump inhibitors (PPIs) have been associated with kidney problems, though the overall risk for an individual may be low.
- Some antiviral medicines
- Certain antiviral drugs can affect kidney function and may require dose adjustments.
- High-dose supplements and herbal products
- Some supplements, especially those containing unregulated ingredients or excessive amounts of certain minerals, may stress the kidneys.
- Some chemotherapy or immune-related medicines
- These can be kidney-stressing and are usually monitored with blood tests.
Protect your kidneys
- Avoid taking painkillers more often than recommended.
- Drink enough fluids unless your doctor has advised fluid restriction.
- Tell healthcare professionals about all medicines and supplements you take.
- Have kidney function checked if you take medicines that can affect the kidneys long term.
Seek medical advice if you notice symptoms such as reduced urination, swelling in the legs, unusual fatigue, nausea, confusion, or sudden changes after starting a new medicine.
If you share the names of the pills you take, I can help explain whether they are known to require kidney monitoring.
