A renal stone, also called a kidney stone or renal calculus, is a solid deposit that develops when certain substances in urine become concentrated and form crystals.

The appropriate medical treatment of renal stone depends on several factors, including:

• Stone size

• Stone location

• Stone composition

• Symptoms

• Urinary obstruction

• Presence of infection

• Kidney function

• Previous history of stones

• Likelihood of spontaneous passage

Small stones may sometimes pass without a procedure, while larger, obstructing or severely painful stones may require active removal.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized kidney evaluation and management for patients with renal stones and associated kidney-function concerns.

Can a Renal Stone Be Treated With Medicine?

Sometimes, yes.

Medical treatment can be useful when a stone is small enough that spontaneous passage is reasonably possible and there are no complications requiring urgent intervention.

Treatment may involve:

• Pain control

• Appropriate fluid management

• Medicines that may facilitate passage of selected ureteral stones

• Treatment of associated urinary infection

• Medicines that alter urine chemistry for selected stone types

• Long-term preventive treatment

However, medicines do not dissolve or remove every type of kidney stone.

The treatment plan should therefore be based on the stone's characteristics and the patient's medical condition.

1. Pain Control During Renal Stone Passage

Renal stones can cause severe colicky pain, particularly when a stone moves into the ureter.

Depending on the patient's health and kidney function, a doctor may recommend appropriate pain-relieving medication.

Some patients may receive:

• Nonsteroidal anti-inflammatory drugs

• Paracetamol or other analgesics

• Stronger prescription pain medicines in selected situations

NSAIDs can be useful for renal colic but are not appropriate for everyone, particularly people with certain kidney conditions, dehydration, gastrointestinal problems or other contraindications.

Pain medicine should therefore be selected by a healthcare professional rather than taken repeatedly without assessment.

2. Medicines That May Help a Stone Pass

Some medicines may help selected stones in the ureter pass more easily.

This approach is often called medical expulsive therapy.

The benefit depends on factors such as:

• Stone size

• Stone location

• Degree of obstruction

• Symptoms

• Patient characteristics

A medicine commonly discussed for selected ureteral stones is an alpha-blocker, such as tamsulosin.

However, not every renal stone benefits from this approach. A stone still located inside the kidney is different from a stone that has entered the ureter.

The treating doctor should determine whether medical expulsive therapy is appropriate.

3. Can Medicine Dissolve a Kidney Stone?

Most kidney stones cannot simply be dissolved with a tablet.

However, certain stone types have specific medical treatment options.

Uric Acid Stones

Some uric acid stones can respond to medically supervised urine alkalinization.

Medicines such as potassium citrate may be used in appropriate patients to increase urinary citrate and pH.

Calcium Stones

Calcium stones are the most common type of kidney stone.

Treatment usually focuses on correcting the factors responsible for stone formation rather than trying to dissolve an existing calcium stone with a tablet.

Struvite Stones

Struvite stones are associated with certain urinary infections.

Treatment may involve appropriate antibiotics and, when necessary, removal of the stone and correction of the underlying urinary problem.

Cystine Stones

Cystine stones occur because of an inherited disorder affecting cystine handling.

Specialist-directed measures may include high fluid intake when appropriate, urine alkalinization and specific medicines in selected patients.

4. Why Is Knowing the Stone Type Important?

Medical treatment is more effective when the reason for stone formation is understood.

Doctors may determine stone composition through:

• Analysis of a passed stone

• Analysis of removed stone fragments

• Urine testing

• Blood tests

• 24-hour urine collection in selected patients

A 24-hour urine evaluation can provide information about urine volume and mineral levels that contribute to stone formation.

This information can help guide prevention and, in selected cases, medication.

5. Blood and Urine Tests Before Medical Treatment

A renal stone should not always be treated based only on symptoms.

Depending on the situation, the doctor may request:

Blood Tests

These can include:

• Serum creatinine

• eGFR

• Urea

• Sodium

• Potassium

• Calcium

• Uric acid

• Other tests based on the suspected cause

Urine Tests

Urine evaluation may check for:

• Blood

• Infection

• Crystals

• Protein

• Urine pH

• Other abnormalities

A urine culture may be necessary when infection is suspected.

6. Imaging Helps Decide Whether Medicine Is Enough

Imaging can show where the stone is located and whether it is obstructing urine flow.

Depending on the situation, doctors may use:

• Ultrasound

• X-ray in selected cases

• Non-contrast CT

• Other imaging when clinically indicated

The size and location of a stone are particularly important when deciding whether observation and medical treatment are reasonable.

When Is Medical Treatment of Renal Stone Not Enough?

Medication and observation may not be appropriate when a stone causes complications.

Active stone removal may be considered when there is:

• Persistent or recurrent severe pain

• Urinary obstruction

• Infection associated with obstruction

• Declining kidney function

• Low likelihood of spontaneous passage

• Persistent stone despite observation

• Significant stone growth

• Other clinically important complications

Larger stones or stones blocking the urinary tract may require more active treatment.

What Procedures Are Used When a Renal Stone Needs Removal?

When medical treatment alone is unlikely to work, a urologist may consider a procedure.

Shock Wave Lithotripsy

Shock wave lithotripsy uses externally generated shock waves to fragment a stone.

The resulting pieces may then pass through the urinary tract.

Its suitability depends on the stone's size, location, composition and patient factors.

Ureteroscopy and Laser Lithotripsy

During ureteroscopy, a thin instrument is passed through the urinary tract to reach the stone.

The stone can be removed or fragmented, often using laser energy.

A temporary ureteral stent may sometimes be placed to support urine drainage after the procedure.

Percutaneous Nephrolithotomy

PCNL involves reaching the kidney through a small access tract made through the back.

It is particularly useful for larger or complex renal stones.

The stone can be removed or fragmented through the nephroscope.

The appropriate procedure should be selected after reviewing imaging, stone characteristics, kidney function and the patient's overall health.

Can Renal Stones Be Treated Without Surgery?

Some can, but not all.

A small, uncomplicated stone may pass naturally with observation and appropriate medical management.

However, a larger stone, persistent obstruction, infection or worsening kidney function may require a procedure.

Trying to avoid a procedure at all costs can be unsafe if the stone is causing complications.

The goal should be safe stone clearance and protection of kidney function, not simply avoiding surgery.

Does Drinking More Water Remove a Renal Stone?

Adequate fluid intake is an important part of kidney stone prevention and may help some small stones pass when appropriate.

However, drinking excessive amounts of water does not guarantee that a stone will pass.

If a stone is causing significant obstruction, forcing large amounts of fluid can increase discomfort without removing the blockage.

Fluid recommendations should also be individualized in people with kidney failure, heart disease or fluid restrictions.

NIDDK notes that fluid intake for stone prevention should be discussed with a healthcare professional when other medical conditions limit how much a person can safely drink.

Medical Treatment for Preventing Another Renal Stone

Treating the current stone is only part of kidney stone care.

Once the stone has passed or been removed, the next step is to reduce the risk of recurrence.

Increase Fluid Intake When Appropriate

Adequate fluid helps dilute urine and can reduce the concentration of stone-forming substances.

The appropriate amount depends on kidney function, climate, activity and other medical conditions.

Reduce Excess Sodium

High sodium intake can increase the risk of some calcium-containing stones.

Reducing excessive salt can therefore be part of a prevention plan.

Maintain Appropriate Dietary Calcium

People with calcium stones should not automatically eliminate dietary calcium.

The appropriate amount depends on the individual's stone type and overall health.

Review Animal Protein Intake

High intake of animal protein may increase stone risk in some people.

Dietary advice should be individualized rather than based on extreme restrictions.

Address Metabolic Abnormalities

If testing identifies high urinary calcium, low urinary citrate, high uric acid or another abnormality, targeted treatment may reduce future stone formation.

Medicines Used to Prevent Recurrent Kidney Stones

Depending on the type of stone and metabolic findings, doctors may prescribe medicines such as:

• Potassium citrate

• Thiazide-type medicines for selected patients with high urinary calcium

• Allopurinol for selected patients with uric-acid-related stone risk

• Antibiotics for infection-related stones when clinically indicated

• Other specialized medicines for uncommon stone disorders

These medicines are not interchangeable, and treatment should be based on the patient's laboratory results and stone type.

What Should You Avoid During Renal Stone Treatment?

Avoid relying on unproven remedies advertised as stone breakers or kidney cleansers.

Be especially cautious about:

• Unprescribed herbal products

• Excessive water intake

• Repeated painkiller use without medical advice

• Self-prescribed antibiotics

• Unnecessary restrictive diets

• Delaying treatment despite obstruction or infection

Some medicines can affect kidney function, and people with existing kidney disease may be more vulnerable to medication-related complications.

When Is a Renal Stone an Emergency?

Seek urgent medical attention if a suspected or known stone is accompanied by:

• Fever or chills

• Severe or worsening flank pain

• Persistent vomiting

• Very little or no urine

• Difficulty passing urine

• Severe weakness

• Confusion

• Rapid deterioration in health

An obstructed urinary tract combined with infection can become a serious medical emergency.

Medical Treatment of Renal Stone in Patients With Kidney Disease

Patients who already have reduced kidney function require additional care when treating renal stones.

The doctor may need to consider:

• Current creatinine

• eGFR

• Electrolytes

• Fluid status

• Existing medications

• Blood pressure

• Stone-related obstruction

• Infection risk

Certain medicines that are commonly used for pain or stone management may not be appropriate for every person with CKD.

Therefore, kidney function should be considered before starting treatment.

How Long Does Medical Treatment Take?

There is no fixed treatment duration for every renal stone.

A small stone may pass over a period of days or weeks, while another may remain in place or become obstructed.

The doctor may recommend follow-up imaging to determine whether the stone has passed, moved or remained unchanged.

If the stone does not progress or complications develop, active removal may become appropriate.

What Happens After the Stone Is Removed?

After treatment, the focus shifts toward preventing recurrence.

Depending on the patient, follow-up may include:

• Stone analysis

• Blood tests

• Urine examination

• 24-hour urine testing

• Dietary assessment

• Review of medication

• Follow-up imaging

NIDDK notes that analysis of a removed or passed stone and, in selected patients, 24-hour urine testing can help identify factors contributing to recurrent stone formation.

Medical Renal Stone Care at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation for patients with renal stones and associated kidney-function concerns.

Depending on the clinical situation, care may include:

• Assessment of kidney function

• Review of creatinine and eGFR

• Urine testing

• Evaluation of recurrent stone formation

• Review of stone-related obstruction

• Assessment of infection

• Dietary and fluid guidance

• Evaluation of metabolic risk factors

• Medication review

• Kidney-protection strategies

• Coordination with urological specialists when procedural stone removal is required

The treatment plan is determined according to stone characteristics, kidney function, symptoms and the patient's overall medical condition.

Frequently Asked Questions

What is the medical treatment for a kidney stone?

Medical treatment may include pain management, observation, appropriate fluid management, selected medicines to facilitate passage of ureteral stones and preventive medicines based on stone type and metabolic abnormalities.

Can renal stones be removed with medicine?

Some small stones may pass naturally with medical management. Most established kidney stones cannot simply be dissolved with tablets. Certain uric acid and other specific stone types may respond to targeted medical therapy.

Which medicine is best for renal stones?

There is no single best medicine for every stone. The appropriate treatment depends on stone size, location, composition, symptoms, kidney function and the presence of obstruction or infection.

Can tamsulosin help kidney stones?

Tamsulosin and other alpha-blockers may be considered for selected ureteral stones. They are not appropriate for every stone, particularly stones that remain inside the kidney.

Can drinking water remove a renal stone?

Adequate fluid intake may support passage of some small stones and is important for prevention. However, excessive water does not guarantee removal and can be unsafe for some patients.

When does a renal stone need surgery?

A procedure may be needed when the stone is unlikely to pass, causes persistent pain, produces obstruction, is associated with infection, affects kidney function or creates another significant complication.

What happens if a renal stone is left untreated?

Some stones remain stable, while others grow, move or cause obstruction. Untreated complicated stones can contribute to infection, severe pain and, in some situations, impaired kidney function.

Which doctor treats renal stones?

Stone removal procedures are generally performed by a urologist, while a nephrologist evaluates kidney function, medical kidney disease, metabolic risk factors and associated complications. Some patients benefit from coordinated care between both specialists.

Conclusion

Medical treatment of renal stone is possible in selected patients, particularly when the stone is small, symptoms are manageable and there is no serious obstruction or infection.

Treatment may include pain control, observation, appropriate fluid management, selected stone-passage medicines and targeted therapy for particular stone types. Long-term prevention may involve dietary changes and medicines based on stone composition and metabolic testing.

However, not every renal stone can be treated successfully with medicines alone. Persistent pain, obstruction, infection, declining kidney function or a large stone may require active removal through procedures such as shock wave lithotripsy, ureteroscopy with laser treatment or PCNL.

For individualized evaluation of renal stones and kidney-function concerns, consult Dr. Sandip Prabhakar Bhurke at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational and informational purposes only and does not constitute medical diagnosis, treatment or individualized medical advice. The appropriate treatment for a renal stone depends on its size, location, composition, symptoms, urinary drainage, infection status, kidney function and other health conditions. Do not start pain medicines, antibiotics, tamsulosin, potassium citrate, allopurinol, herbal remedies or other stone treatments without professional guidance. Do not force excessive amounts of water in an attempt to pass a stone. Fever, chills, severe pain, persistent vomiting, very little or no urine, difficulty passing urine or rapidly worsening symptoms may indicate a serious complication requiring urgent medical attention. Consult Dr. Sandip Prabhakar Bhurke or another qualified nephrologist and, when stone removal is required, an appropriate urological specialist.