What is the dosage regimen for alendronate (Fosamax) in the treatment of osteoporosis?

Updated: Sep 26, 2019
  • Author: Monique Bethel, MD; Chief Editor: Herbert S Diamond, MD  more...
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Answer

The treatment dose of alendronate is 70 mg/wk, to be taken sitting upright with a large glass of water at least 30 minutes before eating in the morning. Alendronate is also available in combination with cholecalciferol (vitamin D3). The combination of alendronate with vitamin D3 (Fosamax Plus D) is indicated for the treatment of osteoporosis in men to increase bone mass.

The results of a population-based, national register–based, open cohort study of 38,088 patients suggest that elderly patients who use proton pump inhibitors in conjunction with alendronate have a dose-dependent loss of protection against hip fracture. [131]


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