<unk> (injection) is a xanthine oxidase inhibitor that is FDA approved for the treatment of patients with leukemia, lymphoma, and solid tumor malignancies who are receiving cancer therapy which causes elevations of serum and urinary uric acid levels and who cannot tolerate oral therapy.   Common adverse reactions include maculopapular eruption and pruritus.
Allopurinol 
Probenecid
Pamidronic acid
Etidronic acid
Tiludronate
Colchicine
Zoledronic acid
Risedronate