Competitively inhibits reabsorption of uric acid at proximal convoluted tubule, thereby promoting its excretion and reducing serum uric acid levels. Increases plasma levels of weak organic acids (penicillins, cephalosporins, or other β-lactam antibiotics) by competitively inhibiting their renal tubular secretion.
Therapeutic use
Prevention of hyperuricemia associated with gout or gouty arthritis. Prolongation and elevation of β-lactam plasma levels.
Pregnancy and lactiation implications
Caution during lactation.
Unlabeled use
Contraindications
Hypersensitivity to probenecid or any component of the formulation. High-dose aspirin therapy. Blood dyscrasias. Uric acid kidney stones. Children <2 years of age.
Warnings and precautions
May cause exacerbation of acute gouty attack (avoid fluctuation in uric acid (increase or decrease)). Use with caution in peptic ulcer disease. Monotherapy may not be effective in creatinine clearance <30 mL/minute. Use of probenecid with penicillin in renal insufficiency not recommended. Salicylates may diminish therapeutic effect of probenecid. May rarely cause leukopenia (use caution with clozapine and carbamazepine).