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A uricosuric agent is a medicine that lowers blood uric acid by increasing the amount of urate excreted in urine. These drugs act mainly on transport proteins in the kidney tubules that normally reclaim urate. Probenecid is a commonly recognized uricosuric medicine. Availability and approved use of other agents differ by country.
read more about uricosuric agent ...Uricosuric agents are used for long-term urate lowering in selected patients with gout or persistent hyperuricemia. They can be considered when another urate-lowering medicine is unsuitable, insufficient, or combined treatment is needed. They do not provide rapid pain relief during an acute gout attack. Treatment aims to maintain serum urate below a target that reduces crystal formation and promotes crystal dissolution.
Urate is filtered by the kidneys and then undergoes reabsorption and secretion through several transporters. Many uricosurics inhibit reabsorptive transporters such as urate transporter 1, allowing more urate to remain in the urine. The resulting increase in urinary excretion lowers the urate concentration in blood. Kidney function and transporter selectivity influence how effectively a particular drug works.
Uricosuric medicines are commonly taken by mouth on a regular schedule rather than only when gout symptoms occur. Clinicians monitor serum urate, kidney function, gout flares, and signs of urinary stones. Adequate fluid intake is commonly encouraged unless another medical condition requires fluid restriction. Flare-prevention medicine can be prescribed when urate-lowering treatment begins.
Possible effects include nausea, rash, headache, gout flares, and increased uric acid in the urine. Higher urinary urate can contribute to kidney stones, blood in the urine, or urinary obstruction. Reduced kidney function can limit effectiveness or increase risk, depending on the product. Uricosurics can also alter kidney transport of other medicines and cause clinically significant drug interactions.
Yes. Probenecid inhibits renal urate reabsorption and increases uric acid excretion. It is also used in selected situations to alter the kidney elimination of other medicines.
It lowers urate over time but does not provide immediate anti-inflammatory pain relief. Acute attacks require a separate treatment plan.
Yes. Increasing urinary uric acid can promote uric acid stone formation in susceptible patients. Hydration and patient selection help reduce risk.
Effectiveness commonly decreases as kidney function declines, and some products should be avoided below specific thresholds. Product-specific kidney guidance must be followed.
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Hyperuricemia. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK459218/. Date Accessed August 6, 2026.
2020 American College of Rheumatology Guideline for the Management of Gout. American College of Rheumatology. https://rheumatology.org/gout-guideline. Date Accessed August 6, 2026.
Uric Acid Nephrolithiasis. StatPearls (NCBI Bookshelf). https://www.ncbi.nlm.nih.gov/books/NBK560726/. Date Accessed August 6, 2026.