THE PRESENT INVENTION RELATES TO A LIQUID COMPOSITION FOR PREVENTION AND/OR TREATMENT OF BONE METABOLIC DISEASES, COMPRISING: ALENDRONIC ACID OR ITS ACCEPTABLE PHARMACEUTICAL SALTS, OR MIXTURES THEREOF, A VISCOSITY AGENT SELECTED FROM THE GROUP CONSISTING OF ALGINATE, PROPYLGLYCOL ALGINATE, ARABIC GUM (ACACIA), XANTHAN GUM, GUAR GUM, LOCUST BEAN, CARRAGEENAN GUM, KARAYA GUM, TRAGACANTH GUM, CHITOSAN, SODIUM CARBOXYMETHYL CELLULOSE AND CARBOMER OR MIXTURES THEREOF, AT LEAST ONE FLAVORING AGENT, AND PURIFIED WATER USES THEREOF A PREPARATION PROCESS THEREFORE.