Kidney stone pain can be sudden, intense and difficult to tolerate. The pain may begin in the side or back and move toward the lower abdomen or groin as a stone travels through the urinary tract. Nausea and vomiting may occur along with the pain.

There is no single pain medicine that is safest or most suitable for every person with a kidney stone.

The choice depends on factors such as:

• Severity of pain

• Kidney function

• Hydration status

• Stomach or gastrointestinal problems

• Other medicines being taken

• Pregnancy

• Heart or liver disease

• Blood-pressure problems

• Whether the stone is obstructing urine flow

Nonsteroidal anti-inflammatory drugs, commonly called NSAIDs, are frequently used for renal colic when medically appropriate. Paracetamol may also be used in suitable patients. Some people with severe pain may require stronger prescription analgesics under medical supervision.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides kidney evaluation and management for patients experiencing kidney stone-related pain and kidney-function concerns.

Why Do Kidney Stones Cause Such Severe Pain?

A kidney stone may cause pain when it moves into the ureter and interferes with urine flow.

The ureter contains smooth muscle that can contract around the stone. Stretching and pressure within the urinary tract can contribute to the characteristic waves of renal colic.

Kidney stone pain may:

• Start suddenly

• Come in waves

• Begin in the flank or back

• Travel toward the abdomen or groin

• Occur with nausea or vomiting

• Be associated with blood in the urine

A stone that becomes lodged may cause urinary obstruction and requires medical assessment.

NSAIDs for Kidney Stone Pain

NSAIDs are commonly used for acute renal colic when there is no contraindication.

Examples include medicines containing:

• Ibuprofen

• Naproxen

• Diclofenac

• Other NSAIDs prescribed by a doctor

These medicines reduce inflammation and pain-producing pathways and may provide effective relief for renal colic.

However, an important point is that NSAIDs are not appropriate for everyone with kidney stones.

They can affect kidney blood flow and may cause or worsen kidney injury in susceptible people, particularly when kidney function is already reduced or when the person is dehydrated.

When Should NSAIDs Be Avoided or Used With Caution?

A doctor may need to avoid or carefully assess NSAID use in people with:

• Chronic kidney disease

• Acute kidney injury

• Significant dehydration

• Low blood pressure

• Certain heart conditions

• Previous gastrointestinal bleeding or ulcers

• Certain blood-thinning medicines

• Some medication combinations

• Other conditions that increase kidney or bleeding risk

This is why taking repeated doses of an over-the-counter painkiller without checking its safety can be risky.

NIDDK specifically warns that NSAIDs can cause kidney injury, particularly in people who are dehydrated or already vulnerable to kidney problems.

Is Paracetamol Used for Kidney Stone Pain?

Paracetamol (acetaminophen) can be an option for pain relief in appropriate patients.

It does not belong to the NSAID group and therefore has a different safety profile.

However, the correct dose depends on factors including:

• Age

• Body weight

• Liver health

• Other medicines

• Total daily intake from all products containing paracetamol

People with significant liver disease or those taking several combination cold or pain medicines should discuss paracetamol use with a healthcare professional.

For kidney stone pain, a doctor may select paracetamol alone or use it as part of a broader pain-management plan depending on the clinical situation.

What About Stronger Painkillers?

If kidney stone pain is severe and does not respond adequately to appropriate first-line treatment, a doctor may consider a stronger prescription analgesic.

In some circumstances, opioid medicines may be used under medical supervision.

These medicines can have side effects such as:

• Drowsiness

• Nausea

• Constipation

• Dizziness

• Breathing problems

• Dependence or misuse risk

They should therefore not be self-prescribed or shared between patients.

The need for stronger pain relief can also be a reason to reassess the stone itself, especially if pain remains uncontrolled despite appropriate medication.

Is Injection Medicine Better Than Tablets?

Not necessarily.

The route of pain medicine depends on the severity of symptoms and the patient's ability to take oral medication.

Oral medicines may be sufficient for many patients.

If a person is experiencing severe vomiting, cannot keep medicines down or requires urgent pain control, treatment in an emergency or hospital setting may involve injectable or intravenous medicines.

People who are vomiting and becoming dehydrated may also require medical fluid replacement.

What If the Patient Has Kidney Disease Already?

This is an especially important situation.

A person with pre-existing CKD should not assume that a commonly available painkiller is automatically safe.

NSAIDs may worsen kidney function in susceptible patients.

The doctor may instead consider:

• The current eGFR

• Serum creatinine

• Hydration status

• Blood pressure

• Other medicines

• Severity and location of the stone

• Presence of obstruction

• Other medical conditions

Pain treatment should be individualized rather than based only on the name of the stone medicine.

Can Pain Medicine Remove the Kidney Stone?

No.

Pain medicine treats the symptom; it does not physically remove most kidney stones.

Depending on the stone's size and location, a small stone may pass naturally, while a larger, obstructing or severely symptomatic stone may require active treatment.

Possible stone treatments include:

• Observation for selected small stones

• Medical management in appropriate cases

• Shock wave lithotripsy

• Ureteroscopy

• Laser lithotripsy

• Percutaneous nephrolithotomy for larger stones

The appropriate procedure depends on the stone's characteristics and the patient's condition.

Does Drinking More Water Relieve Kidney Stone Pain?

Adequate hydration is important for many people with kidney stones, but forcing large amounts of water is not a pain treatment.

If the person is dehydrated, appropriate fluid replacement may be beneficial.

However, drinking excessive quantities of water while a stone is obstructing urine flow does not guarantee that the stone will pass and may worsen discomfort in some circumstances.

People with kidney failure, heart disease or prescribed fluid restrictions require individualized advice.

What If Kidney Stone Pain Keeps Coming Back?

Repeated episodes of pain should not simply be managed with painkillers indefinitely.

Recurring pain may indicate that:

• The stone has not passed

• The stone is obstructing urine flow

• The stone is too large to pass

• Additional stones are present

• A complication has developed

• Another condition is causing the symptoms

Imaging may be required to determine the stone's location and whether treatment is necessary.

NIDDK notes that larger stones, stones blocking the urinary tract or stones causing significant pain may require treatment to remove or break them.

When Does Kidney Stone Pain Require Urgent Treatment?

Seek prompt medical attention if kidney stone pain occurs with:

• Fever

• Chills

• Persistent vomiting

• Very little urine

• Inability to urinate

• Severe weakness

• Confusion

• Severe or uncontrolled pain

• Known urinary obstruction

• Reduced kidney function

Fever or chills together with suspected urinary obstruction can indicate a serious infection requiring urgent assessment.

A stone that blocks urine flow can also lead to complications, including infection and loss of kidney function if untreated.

Kidney Stone Pain With Vomiting

Severe renal colic can trigger nausea and vomiting.

Repeated vomiting creates two concerns:

1. The patient may be unable to take oral pain medicine.

2. Fluid loss can lead to dehydration.

Dehydration can be particularly concerning in people who already have kidney disease.

If vomiting prevents adequate fluid or medication intake, medical assessment may be required. NIDDK notes that patients who are vomiting and dehydrated may need hospital treatment and intravenous fluids.

Why You Should Not Mix Multiple Painkillers Yourself

People sometimes combine several over-the-counter pain medicines hoping to obtain faster relief.

This can be unsafe.

For example, taking multiple products containing NSAIDs can increase the risk of adverse effects. Combination cold or pain products may also contain paracetamol without the person realizing it.

Before combining medicines, check the active ingredients and ask a doctor or pharmacist whether the combination is appropriate.

This is especially important for people with:

• CKD

• Diabetes

• High blood pressure

• Stomach ulcers

• Liver disease

• Heart disease

• Older age

• Multiple prescription medicines

What Tests May Be Needed for Kidney Stone Pain?

If symptoms are severe, recurrent or complicated, the doctor may recommend investigations such as:

Urine Examination

Urinalysis can help identify:

• Blood

• Infection

• Crystals

• Other abnormalities

Blood Tests

Depending on the situation:

• Creatinine

• eGFR

• Urea

• Electrolytes

• Blood count

Ultrasound

Ultrasound can identify many stones and may show urinary obstruction or swelling of the kidney.

CT Scan

A non-contrast CT scan may provide detailed information about:

• Stone size

• Stone location

• Number of stones

• Degree of obstruction

The choice of imaging depends on symptoms, age, pregnancy status and clinical circumstances.

When Does a Kidney Stone Need Removal Instead of More Pain Medicine?

Continued pain relief should not substitute for definitive treatment when the stone is unlikely to pass or complications are developing.

Active stone treatment may be considered when there is:

• Persistent or recurrent pain

• Urinary obstruction

• Infection associated with the stone

• Reduced kidney function

• A stone with a low likelihood of spontaneous passage

• Increasing stone burden

• Other clinically important complications

Treatment may involve ureteroscopy, laser treatment, shock wave lithotripsy or PCNL depending on the stone.

Kidney Stone Pain Treatment at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, evaluates patients with kidney stones, renal colic and associated kidney-function abnormalities.

Depending on the clinical situation, evaluation may include:

• Assessment of pain severity and pattern

• Kidney-function testing

• Review of current pain medicines

• Assessment of hydration status

• Urine examination

• Evaluation for urinary obstruction

• Review of ultrasound or CT findings

• Assessment of recurrent stone disease

• Kidney-function monitoring

• Coordination with a urologist when procedural stone removal is required

The aim is to address both pain control and the underlying reason for the pain rather than relying on repeated self-medication.

Frequently Asked Questions

What is the best pain medication for kidney stones?

There is no single best medicine for everyone. NSAIDs are commonly used for renal colic when medically appropriate, while paracetamol and other prescription analgesics may be suitable in selected patients. Kidney function and other health conditions must be considered.

Is ibuprofen good for kidney stone pain?

Ibuprofen is an NSAID and may help renal colic in suitable patients. However, it may be unsafe in people with certain kidney problems, dehydration or other medical conditions. Ask a healthcare professional before using it repeatedly.

Can paracetamol help kidney stone pain?

Yes, paracetamol can provide pain relief for suitable patients. The appropriate dose depends on individual factors, including liver health and other medicines being taken.

Can I take painkillers if I have CKD and a kidney stone?

Do not assume that over-the-counter painkillers are safe when you have CKD. NSAIDs can worsen kidney function in susceptible patients. Your doctor should select the appropriate pain-relief strategy.

Does pain medicine make a kidney stone pass?

Pain medicine does not remove a kidney stone. It controls symptoms while the stone is being observed or treated. Larger or obstructing stones may require a procedure.

Should I drink lots of water during kidney stone pain?

Adequate hydration may be appropriate for some people, but drinking excessive amounts of water does not guarantee stone passage and can be inappropriate in people with fluid restrictions or certain complications.

When should kidney stone pain be treated as an emergency?

Severe pain accompanied by fever, chills, inability to urinate, very low urine output, persistent vomiting, confusion or rapidly worsening symptoms requires urgent medical assessment.

Conclusion

Finding the best pain medication for kidney stones depends on more than the intensity of the pain. NSAIDs may provide effective relief for renal colic when appropriate, while paracetamol or stronger prescription analgesics may be considered according to the patient's circumstances.

People with CKD, dehydration, low blood pressure, stomach problems, liver disease or multiple medications need particular caution before taking painkillers.

Pain medicine also does not treat the underlying stone. If a stone is large, obstructing urine flow, causing persistent pain or associated with infection or kidney-function problems, the patient may need active stone treatment rather than repeated analgesics.

For individualized assessment of kidney stone pain, kidney function and appropriate treatment options, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational and informational purposes only and is not a substitute for medical diagnosis, treatment or individualized medical advice. The appropriate pain medicine for a kidney stone depends on kidney function, hydration, age, pregnancy status, liver health, other medical conditions and current medicines. NSAIDs such as ibuprofen or naproxen can cause kidney injury in susceptible people, particularly with kidney disease or dehydration. Do not combine pain medicines, exceed recommended doses or use prescription analgesics without professional guidance. Seek urgent medical attention for severe uncontrolled pain, fever, chills, persistent vomiting, very little or no urine, confusion, severe weakness or rapidly worsening symptoms. Consult Dr. Sandip Prabhakar Bhurke or another qualified healthcare professional for personalized kidney stone treatment.