Yes. Several medications can injure the kidneys, especially when taken at high doses, for long periods, during dehydration, or in people who already have kidney disease. But an important point is that a medication being “hard on the kidneys” does not mean you should automatically stop it—some medicines that can affect kidney function are also important treatments and may protect the kidneys when used appropriately. NNIDDK+1

1. NSAID painkillers — one of the biggest medication-related risks

NSAIDs (nonsteroidal anti-inflammatory drugs) can reduce blood flow to the kidneys. The risk is particularly concerning with high doses, frequent/long-term use, dehydration, low blood pressure, older age, or existing kidney disease. NNIDDK+1

Common examples include:

• Ibuprofen — Advil, Motrin

• Naproxen — Aleve, Naprosyn

• Diclofenac

• Indomethacin

• Meloxicam

• Celecoxib — Celebrex

• Ketorolac — Toradol

• High-dose aspirin (aspirin used for cardiovascular protection at low doses is a different situation)

The National Kidney Foundation specifically advises people with CKD to avoid NSAIDs, particularly at higher doses or with long-term use. NNational Kidney Foundation+1

Why NSAIDs can hurt the kidneys

Your kidneys need adequate blood flow to filter your blood. NSAIDs interfere with prostaglandins, substances that help maintain blood flow to the kidneys. In susceptible people, this can cause acute kidney injury (AKI).

The danger becomes considerably greater when you are dehydrated—for example, from:

• vomiting

• diarrhea

• fever

• heavy sweating

• not drinking enough

• severe illness

NIDDK specifically warns that NSAIDs taken while dehydrated can cause acute kidney injury. NNIDDK

---

2. The dangerous “triple whammy”

One particularly important combination is:

NSAID + ACE inhibitor/ARB + diuretic

For example:

• Ibuprofen + lisinopril + hydrochlorothiazide

• Naproxen + losartan + a diuretic

This combination can substantially increase the risk of acute kidney injury, particularly during dehydration or illness.

ACE inhibitors/ARBs and diuretics are not inherently bad for the kidneys. In fact, they can be extremely beneficial and may slow kidney disease. The problem is the combination with an NSAID and circumstances such as dehydration or low blood pressure. NNIDDK+1

Do not stop your blood-pressure medication on your own. Instead, ask your doctor or pharmacist how you should manage medications if you develop vomiting, diarrhea, fever, or dehydration.

---

3. Certain antibiotics

Some antibiotics can cause kidney injury, either because they are directly toxic to kidney tubules or because they cause an inflammatory/allergic reaction in the kidneys.

Examples that can require particular caution include:

• Gentamicin

• Tobramycin

• Amikacin

• Vancomycin

• Some cephalosporins

• Some penicillins

• Trimethoprim/sulfamethoxazole

• Other antibiotics depending on the individual situation

The risk varies enormously depending on the drug, dose, duration, kidney function, age, dehydration and other medications.

Some antibiotics also need dose adjustment when kidney function is reduced. NNational Kidney Foundation+1

This doesn’t mean you should avoid antibiotics when prescribed. An untreated serious infection can itself cause kidney injury.

---

4. Proton-pump inhibitors (PPIs)

PPIs are common medications for acid reflux and ulcers.

Examples:

• Omeprazole — Prilosec

• Esomeprazole — Nexium

• Lansoprazole — Prevacid

• Pantoprazole — Protonix

• Rabeprazole

PPIs have been associated with acute interstitial nephritis, an inflammatory reaction affecting the kidneys. They have also been associated in observational research with chronic kidney problems, although an association does not necessarily mean that the medication directly caused CKD in every person.

The National Kidney Foundation includes PPIs among medicines requiring kidney considerations. NNational Kidney Foundation

If you’ve been taking a PPI for months or years, it is reasonable to ask your clinician:

“Do I still need this medication, and should my kidney function be monitored?”

Don’t abruptly discontinue a medication that was prescribed for an important condition without discussing it first.

---

5. ACE inhibitors and ARBs — important distinction

Examples:

ACE inhibitors

• Lisinopril

• Enalapril

• Ramipril

• Benazepril

ARBs

• Losartan

• Valsartan

• Irbesartan

• Olmesartan

These drugs can cause a temporary rise in creatinine, particularly after starting treatment or changing the dose.

But they are not generally kidney-destroying drugs.

In fact, ACE inhibitors and ARBs can protect kidney function, particularly in people with hypertension, diabetes, or protein in the urine. NIDDK notes that these medicines can slow kidney disease progression. NNIDDK+1

The situation becomes different if someone becomes severely dehydrated, develops very low blood pressure, or has certain kidney/artery problems.

Never stop lisinopril or losartan simply because you read that they affect the kidneys. Discuss your blood tests and circumstances with your clinician.

---

6. Diuretics (“water pills”)

Examples include:

• Hydrochlorothiazide

• Chlorthalidone

• Furosemide (Lasix)

• Bumetanide

• Torsemide

• Spironolactone

These medicines are frequently used to protect the heart and control blood pressure or fluid overload.

However, excessive fluid loss can lead to:

dehydration → low blood pressure → reduced kidney blood flow → acute kidney injury

This is particularly relevant when someone is also taking an NSAID or ACE inhibitor/ARB. NNIDDK+1

Again, these medicines shouldn’t automatically be considered “kidney-damaging.”

---

7. Lithium

Lithium is an important medication for bipolar disorder and certain other psychiatric conditions.

Long-term lithium therapy can affect kidney function in some people and can cause:

• excessive urination

• excessive thirst

• changes in kidney concentrating ability

• chronic kidney impairment in some long-term users

• lithium toxicity during dehydration or certain drug interactions

People taking lithium generally require regular blood-level and kidney-function monitoring.

Do not stop lithium abruptly without medical supervision.

---

8. Certain cancer medications

Some chemotherapy and cancer medications can be directly toxic to the kidneys.

A well-known example is:

Cisplatin

Other cancer therapies can also affect kidney function.

Cancer treatment teams often monitor:

• creatinine

• eGFR

• electrolytes

• urine output

• hydration status

and may modify treatment or provide protective measures when necessary.

The National Kidney Foundation lists some cancer medicines among medications that can contribute to acute kidney injury. NNational Kidney Foundation

---

9. Contrast material used for medical imaging

This isn’t technically a daily medication, but it is an important exposure to know about.

Certain iodine-based contrast agents, commonly used during CT scans and angiographic procedures, can occasionally cause kidney injury, particularly in people with impaired kidney function or other risk factors.

For most people, the risk is low, and modern contrast practices have reduced the problem substantially. NIDDK notes that most people don’t experience significant lasting kidney damage from contrast, while people with certain conditions require additional caution. NNIDDK

Before a contrast procedure, tell the medical team if you have:

• CKD

• previous acute kidney injury

• diabetes

• dehydration

• a single functioning kidney

• recent abnormal creatinine/eGFR

---

10. Some antiviral and HIV medications

Certain antiviral drugs can affect kidney function, depending on the particular medication and patient.

Some may require:

• dose adjustment according to eGFR

• monitoring of creatinine

• monitoring of electrolytes

• additional caution when combined with other kidney-affecting drugs

The risk varies substantially between medications, so the specific drug name matters.

---

11. Herbal medicines and supplements

This is often overlooked.

“Natural” does not automatically mean kidney-safe.

Some herbal products can contain substances that:

• directly injure the kidneys

• contain excessive minerals

• interact with prescription medications

• be contaminated or adulterated

• cause dehydration or electrolyte abnormalities

The National Kidney Foundation recommends discussing herbal medicines, vitamins and supplements with a healthcare professional, particularly if kidney function is reduced. NNational Kidney Foundation+1

---

12. Laxatives and bowel-preparation products

Certain bowel preparations used before colonoscopy can cause kidney problems, particularly in vulnerable individuals.

Older phosphate-containing preparations have been associated with kidney injury.

If you have kidney disease, heart disease, are older, or take medications affecting kidney function, your doctor should know before you take a bowel-preparation product.

---

The medications I would be most cautious about

If you’re trying to identify the most important everyday medication risks, I’d put these near the top:

NNIDDK+2

What makes medication-related kidney injury more likely?

Your risk is higher if you have:

• Existing CKD

• Diabetes

• High blood pressure

• Heart failure

• Older age

• Dehydration

• Vomiting or diarrhea

• Low blood pressure

• A single functioning kidney

• Multiple medications

• High medication doses

• Long-term medication use

• Certain drug combinations

NIDDK specifically emphasizes extra caution with medications when someone is dehydrated or has kidney disease, diabetes, or high blood pressure. NNIDDK+1

Warning signs of acute kidney injury

Kidney injury can sometimes occur without obvious symptoms, which is why blood testing is important.

Possible warning signs include:

• Much less urine than usual

• Swelling of legs, ankles, feet or face

• Sudden weight gain

• Unusual fatigue or weakness

• Nausea/vomiting

• Confusion

• Shortness of breath

• Blood in urine

• Very dark urine

• New or worsening high blood pressure

If you have very little/no urine, severe shortness of breath, confusion, severe weakness, or rapidly worsening swelling, seek urgent medical attention.

How to know whether your medicines are affecting your kidneys

The most useful tests are generally:

Blood

• Creatinine

• eGFR

• BUN

• Potassium

• Sodium

• Bicarbonate

Urine

• Urinalysis

• Urine albumin-to-creatinine ratio (UACR)

A rising creatinine or falling eGFR can indicate worsening kidney filtration, although the results need to be interpreted in context. The National Kidney Foundation notes that creatinine/eGFR and urine protein testing are important ways to assess kidney health. NNational Kidney Foundation

Most important advice

Don’t stop prescription medications simply because they appear on a “kidney-damaging” list. Some of them—particularly ACE inhibitors, ARBs and diuretics—can actually be important for kidney and cardiovascular protection. The danger often depends on dose + duration + dehydration + existing kidney function + combinations with other medicines. NNIDDK+1

If you give me the exact names and doses of the medications, vitamins, and supplements you take (for example, Lisinopril 10 mg, Ibuprofen 400 mg, Omeprazole 20 mg), I can go through each one individually and explain its kidney risk, what combinations are concerning, and which kidney blood/urine tests are normally monitored.