Are there clinical studies evaluating the efficacy of serrapeptase for the treatment of active kidney stones (nephrolithiasis)?

No Evidence Supports Serrapeptase for Active Kidney Stones

There are no clinical studies evaluating serrapeptase for the treatment of active kidney stones, and this enzyme is not mentioned in any major urological guidelines for nephrolithiasis management. You should not use serrapeptase for kidney stone treatment.

Evidence Review

Guideline Recommendations

The most authoritative guidelines on kidney stone management—including the 2014 AUA Medical Management Guidelines 1, 2020 EAU Guidelines, and other major international guidelines 2, 3—make no mention of serrapeptase as a treatment option for nephrolithiasis. These comprehensive guidelines cover:

• Medical therapies: Potassium citrate for uric acid and cystine stones, thiazide diuretics for hypercalciuria, allopurinol for hyperuricosuria
• Dietary modifications: Fluid intake to achieve >2.5L urine daily, sodium restriction, appropriate calcium intake
• Surgical interventions: Ureteroscopy and percutaneous nephrolithotomy for stone removal

FDA-Approved Indications

The FDA labeling for serrapeptase 4 indicates approval only for:

• Temporary relief of headache, runny nose, nasal/sinus congestion
• Sensitivity to phenolic compounds

Kidney stones are not an FDA-approved indication.

Research Evidence Gap

A systematic review of serratiopeptidase 5 found insufficient evidence to support its use even for its promoted anti-inflammatory effects, stating: "The existing scientific evidence for Serratiopeptidase is insufficient to support its use as an analgesic and health supplement. The data on long-term safety of this enzyme is lacking."

While serratiopeptidase has theoretical fibrinolytic properties 6, there are zero published clinical trials evaluating its efficacy specifically for kidney stones.

Clinical Recommendation

Use evidence-based treatments instead:

1. Immediate management: Adequate hydration (>2.5L urine output daily) 1
2. Stone-specific medical therapy based on composition:
   • Calcium stones: Thiazides for hypercalciuria, dietary sodium restriction 1
   • Uric acid stones: Potassium citrate to achieve urine pH 6.0 1
   • Cystine stones: Alkalinization plus tiopronin if refractory 1
3. Surgical intervention when indicated: Ureteroscopy or percutaneous nephrolithotomy 2, 3

Critical Pitfall

Relying on unproven supplements like serrapeptase may delay appropriate treatment, risking stone progression, obstruction, infection, or kidney damage—all affecting morbidity and quality of life 7.