List of products in the National Drug Code with proprietary name . This medication is used to prevent gout and gouty arthritis. It will not treat a sudden/severe attack of gout and may make it worse. Probenecid belongs to a class of drugs known as uricosurics. It lowers high levels of uric acid in your body by helping the kidneys to get rid of uric acid. When uric acid levels get too high, crystals can form in the joints, causing gout. Lowering uric acid levels may also help your kidneys. Probenecid may be prescribed in combination with certain antibiotics (such as penicillins). It increases the levels of antibiotic in the blood, which helps the antibiotic work better. Probenecid should not be used in children younger than 2 years.