Probenecid: helping the kidneys remove urate
Prepared 2026-10-29 · Read as Markdown
Probenecid increases the amount of urate passed in urine. It is used for long-term urate control, rather than immediate flare relief. Kidney function, a history of stones, and other prescriptions affect whether it is suitable. ACR favors a xanthine oxidase inhibitor over probenecid in CKD stage 3 or greater. [S02] [S12]
Check the kidney and stone history
The label advises against use with uric-acid stones and notes reduced effectiveness with significant kidney impairment. It also says treatment should not begin until an acute attack has settled. General discussions about starting ULT during a flare should not replace instructions specific to this product. S12
Interactions need a proper review
Probenecid affects how the kidneys handle several drugs. It can increase methotrexate exposure and toxicity, and salicylates can oppose its urate-removing effect. ACR separately advises against stopping low-dose aspirin used for an appropriate reason. Your prescriber needs to reconcile the whole regimen; do not stop heart treatment on your own. S02 S12
Do not improvise a fluid or alkalinizing regimen
The label discusses fluids and urinary alkalinization for stone prevention, while ACR does not recommend routine urine alkalinization for uricosuric treatment. This needs an individual clinical decision. Do not start baking soda, potassium products, or high-volume fluid intake independently, especially with heart or kidney disease. S02 S12
What follow-up should cover
Review urate response, kidney function, stone symptoms, side effects, and how you are taking treatment. Seek clinical advice for new flank pain or blood in the urine. Keep daily treatment and flare-treatment directions separate, and have medicine changes checked even when the current plan is working. S12
Related pages
- Gout, kidney disease and kidney stones
- Medicine interactions and safety
- Urate-lowering therapy and prevention
- Targets, monitoring and follow-up