In pharmacology,<unk> s (also called: diphosphonates) is a class of drugs that inhibits osteoclast action and the resorption of bone. Its uses include the prevention and treatment of osteoporosis, osteitis deformans ("Paget's disease of bone"), bone metastasis (with or without hypercalcemia), multiple myeloma and other conditions that feature bone fragility.
Bisphosphonate
Pamidronic acid
Etidronic acid
Sulfonylurea
Etidronate
Allopurinol 
Clodronate
Risedronate