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Definition of Bisphosphonate

Bisphosphonate: A class of drugs used to strengthen bone. Bone is in a constant state of remodeling, whereby new bone is laid down by cells called osteoblasts while old bone is removed by cells called osteoclasts. Bisphosphonates inhibit bone removal (resorption) by the osteoclasts. Bisphosphonates are used to treat osteoporosis and the bone pain from diseases such as metastatic breast cancer, multiple myeloma, and Paget's disease. The bisphosphonates include Fosamax (alendronate) and Aredia (pamidronate).

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=24485
Last Editorial Review: 9/28/2003


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