Correct existing hypocalcaemia & treat other disturbances of bone & mineral metabolism before starting therapy. Ensure adequate intake of Ca & vit D. Risk of upper GI mucosa irritation. Discontinue use if patient develops dysphagia, odynophagia, retrosternal pain or new or worsening heartburn. Reports of osteonecrosis of the external auditory canal, mainly associated w/ long-term therapy. Very rare post-marketing reports of osteonecrosis of the jaw. Reports of atypical subtrochanteric & diaphyseal femoral fractures, primarily in patients receiving long-term treatment for osteoporosis. Consider discontinuation of therapy in patients suspected to have an atypical femur fracture. Should not be taken by patients w/ rare hereditary problems of galactose intolerance, the Lapp lactase deficiency or glucose-galactose malabsorption. Not recommended for patients w/ CrCl <30 mL/min. Not to be used during pregnancy & lactation.