DRUG
Alendronate, Ibandronate; Risedronate
Oral bisphosphonate tablets. Participants will receive one of the following specific regimens: Alendronate 70mg taken once per week, Ibandronate 150mg taken once per month, or Risedronate 150mg taken once per month. This is combined with daily Calcium and Vitamin D supplementation. The total treatment duration is 6 months.