Fosamax

Fosamax

About Fosamax

Alendronic acid (INN) or alendronate sodium (USAN) sold as Fosamax by Merck is a bisphosphonate drug used for osteoporosis and several other bone diseases. It is marketed alone as well as in combination with vitamin D (2,800 IU and 5600 IU, under the name Fosamax+D). Merck's U.S. patent on alendronate expired in 2008 and Merck lost a series of appeals to block a generic version of the drug from being certified by the U.S. Food and Drug Administration (FDA).