AllopurinolGout SuppressantsXanthine OxidaseOxypurinolGoutUric AcidHyperuricemiaUricosuric AgentsTumor Lysis SyndromeAntimetabolitesUrate OxidaseHypoxanthinesXanthineFree Radical ScavengersXanthinesBenzbromaroneXanthine DehydrogenaseEnzyme InhibitorsDrug HypersensitivityDouble-Blind MethodHypoxanthineDrug EruptionsAntiprotozoal AgentsProbenecidThiazolesStevens-Johnson Syndrome