Synonyms : 4-Amino-1-Hydroxybutylidene 1, 1-Biphosphonate, Alendronate Monosodium Salt, Trihydrate, Alendronate Sodium, Aminohydroxybutane Bisphosphonate, Fosamax, MK-217, 4 Amino 1 Hydroxybutylidene 1, 1 Biphosphonate, Bisphosphonate, Aminohydroxybutane, MK 217, MK217