A tablet, obtainable by direct comprising the active ingredient 4-amino-1-hydroxybutylidene-1,1-bis-phosphonic (alendronic) acid or its pharmaceutically acceptable salts in an amount of 5 to 140 mg, based on the pure acid, a dry binder, a disintegrating agent, a lubricant, the tablet comprising, as the diluent, a combination of at least two diluents except lactose.