Kidney stone treatment without surgery is possible for selected patients. Small stones may pass naturally with pain control, fluids and follow-up. Some ureter stones may pass with medicines that relax the urine tube. Some kidney stones can be treated with ESWL, a shock-wave procedure done without a cut. Rarely, uric acid stones may dissolve with urine-alkalising medicines. But waiting is not safe if there is fever, urine infection, severe blockage, kidney function problem, repeated vomiting or uncontrolled pain. In these situations, urgent urologist evaluation is needed to protect the kidney and prevent complications.

Can kidney stones be treated without surgery?

Yes — but only after checking whether the stone is safe to observe.

A small stone that is moving, with controlled pain and no infection, may pass through urine. NIDDK notes that small kidney stones may pass through the urinary tract, while larger stones, stones that block urine flow or stones causing severe pain may need urgent treatment.

The safest decision depends on:

• Stone size.
• Stone location.
• Pain severity.
• Fever or urine infection.
• Hydronephrosis, meaning swelling of the kidney due to blockage.
• Creatinine/kidney function.
• Single kidney status.
• Whether the stone is moving on follow-up imaging.

The 4 main non-surgical options

Option 1: Letting the stone pass naturally

Natural passage may be possible when the stone is small, pain is manageable, urine is passing normally and there is no fever.

This is commonly considered for small ureteric stones. Distal ureter stones, meaning stones closer to the urinary bladder, generally have a better chance of passing than stones stuck higher up. EAU notes that spontaneous passage decreases as stone size increases, and distal ureter stones have higher passage rates than upper ureter stones.

When observation may be reasonable

Observation may be considered if:

• Pain settles with medicines.
• There is no fever or chills.
• Urine test does not suggest serious infection.
• Creatinine is normal.
• Kidney swelling is mild.
• The stone is small and likely to pass.
• You can return for follow-up.

This should be a planned trial of passage, not blind waiting.

Option 2: Medicines to help stone passage

Pain control

Pain relief is the first step in renal colic. NICE recommends NSAIDs as first-line pain treatment for suspected renal colic, with other options considered when NSAIDs are unsuitable or not enough.

Do not repeatedly take painkillers or injections without reassessment. Pain can reduce even when the stone remains stuck.

Medical expulsive therapy

Medical expulsive therapy means using medicines that relax the ureter, the tube carrying urine from the kidney to the bladder. This may help selected ureter stones pass.

NICE recommends considering alpha blockers for distal ureteric stones less than 10 mm, while EAU states that alpha blockers are most useful for distal ureter stones over 5 mm, especially 5–10 mm stones suitable for conservative treatment.

These medicines should be taken only after medical evaluation. They may not suit patients with low blood pressure, dizziness, certain heart medicines or other medical issues.

Antibiotics

Antibiotics do not remove or dissolve kidney stones.

They are used when infection is suspected. A stone with fever and blockage is a different situation from a simple stone pain episode. EAU describes an obstructed kidney with signs of urinary infection or no urine output as a urological emergency that often needs urgent drainage by DJ stent or nephrostomy tube.

Option 3: Can tablets dissolve kidney stones?

Only some stones can dissolve.

Uric acid stones may dissolve with urine alkalinisation, where medicines make urine less acidic. EAU states that uric acid stones can be dissolved by oral alkalinisation, but patients need urine pH monitoring and careful follow-up.

Most common stones are calcium oxalate or calcium phosphate stones. These usually do not dissolve with tablets. In such stones, medicines are mainly used for pain relief, stone passage or prevention of future stones.

Option 4: ESWL — breaking the stone without a cut

ESWL, or extracorporeal shock wave lithotripsy, uses shock waves from outside the body to break a stone into smaller fragments. These fragments then pass through urine. NIDDK describes shock wave lithotripsy as a treatment where the stone is broken into smaller pieces that pass through the urinary tract.

ESWL may be useful for selected kidney stones and ureter stones. It is not open surgery and does not involve a cut.

When ESWL works better

ESWL works better when:

• The stone is not too large.
• The stone is clearly targetable.
• The stone is not very hard.
• There is no active infection.
• Kidney anatomy allows fragment passage.
• Follow-up is possible.

EAU notes that SWL success depends on stone size, location, hardness/composition, patient habitus and treatment technique.

When ESWL may not be ideal

ESWL may be less suitable for:

• Very hard stones.
• Large stones.
• Some lower pole kidney stones.
• Impacted ureter stones.
• Active urine infection.
• Bleeding tendency or blood thinner issues.
• Stones not visible or not targetable.
• Severe obstruction needing faster drainage.

In such cases, URSL, RIRS or PCNL may be safer or more effective.

When kidney stone treatment without surgery is unsafe

Do not wait at home if you have:

• Fever or chills.
• Severe pain not controlled with medicines.
• Repeated vomiting.
• Reduced urine output.
• Inability to pass urine.
• Known single kidney.
• Rising creatinine.
• Moderate or severe hydronephrosis.
• Diabetes with fever or infection symptoms.
• Pregnancy with stone pain.
• Weakness, confusion or low blood pressure.

NICE recommends surgical treatment, including SWL, within 48 hours for adults with ureteric stones and renal colic when pain is ongoing and not tolerated or when the stone is unlikely to pass.

Tests needed before deciding “no surgery”

A safe no-surgery plan usually needs reports, not guesswork.

Imaging

Ultrasound KUB checks kidney swelling and may detect stones.

X-ray KUB helps follow stones visible on X-ray.

CT KUB gives the most accurate information about stone size, location, number, density, obstruction and anatomy. NICE recommends urgent low-dose non-contrast CT within 24 hours for adults with suspected renal colic, while ultrasound is preferred first-line in pregnancy.

Urine tests

Urine routine/microscopy can show blood, pus cells, crystals and infection signs. Urine culture is important if fever, burning urination or pus cells are present.

Blood tests

Creatinine checks kidney function. CBC may help if infection is suspected. Calcium and uric acid may be checked in recurrent stone formers.

Stone analysis

If the stone passes, collect it. Stone analysis helps decide prevention. NICE recommends considering stone analysis and measuring serum calcium in adults with renal or ureteric stones.

What to do at home during a trial of passage

Drink fluids normally if you are not vomiting and your doctor has not restricted fluids. Do not force litres of water during severe pain, vomiting or reduced urine output.

Take prescribed medicines as advised. Watch for fever, worsening pain, vomiting and reduced urine. Use a urine strainer if available, or collect urine in a clean container when you feel the stone may be passing.

Do not rely on “stone-breaking syrups,” repeated painkiller injections or home remedies if symptoms are worsening. A blocked kidney may become silent but still remain blocked.

Can diet remove an existing kidney stone?

Diet is more useful for preventing future stones than removing a stone that is already stuck.

Water, lemon water, reduced salt and avoiding dehydration may reduce recurrence risk in selected patients. NICE advises adults with stones to discuss fluid intake, fresh lemon juice in drinking water, avoiding carbonated drinks, limiting salt and maintaining normal calcium intake rather than stopping calcium completely.

How a urologist decides the best option

A urologist usually decides based on:

• Stone size.
• Stone location.
• CT density/hardness.
• Kidney swelling.
• Pain pattern.
• Fever or urine infection.
• Kidney function.
• Single kidney status.
• Previous stone history.
• Patient work/travel needs.
• Availability of follow-up.

The goal is not just to avoid surgery. The goal is to relieve pain, protect the kidney, clear infection risk and prevent recurrence.

Consultation checklist: what to bring

Bring these if available:

• USG KUB report.
• CT KUB film/report.
• X-ray KUB.
• Urine routine report.
• Urine culture report.
• Serum creatinine.
• CBC, calcium and uric acid reports if done.
• Previous stone surgery records.
• Discharge summaries.
• Current medicines and allergies.
• Any passed stone fragment.

FAQs

Related reading

• Stone Stuck in Ureter: Symptoms and Treatment
• Stone with Hydronephrosis: What It Means
• Stone with Urine Infection: Why It Can Be Dangerous
• When Does Kidney Stone Need Surgery?
• Can a 3 mm Kidney Stone Pass Naturally?
• Kidney Stone Treatment in Latur.

References

• NICE Guideline NG118. Renal and Ureteric Stones: Assessment and Management https://www.nice.org.uk/guidance/ng118/chapter/recommendations
• European Association of Urology. Guidelines on Urolithiasis https://uroweb.org/guidelines/urolithiasis/chapter/guidelines
• NIDDK. Treatment for Kidney Stones https://www.niddk.nih.gov/health-information/urologic-diseases/kidney-stones/treatment