How Osteoporosis Medications Work

Osteoporosis is a condition characterized by the weakening of bones, making them more susceptible to fractures. The goal of osteoporosis medications is to slow or stop bone loss and increase bone density.

Gold Standard: Bisphosphonates (e.g., Alendronate)

Bisphosphonates are the most commonly prescribed class of medications for osteoporosis. They work by:

• Inhibiting osteoclast activity, which are cells responsible for bone resorption
• Reducing bone turnover and increasing bone density
• Decreasing the risk of fractures in postmenopausal women with osteoporosis

Alternatives to Bisphosphonates

For patients who cannot tolerate bisphosphonates or have contraindications, alternative medications include:

• Selective Estrogen Receptor Modulators (SERMs, e.g., Raloxifene): mimic estrogen's beneficial effects on bone density without stimulating breast tissue growth
• Parathyroid hormone analogs (e.g., Teriparatide): stimulate new bone formation and increase bone density
• Calcitonin: reduces osteoclast activity and decreases bone resorption