There are two kinds of osteoporosis medications
1) Antiresorptive medications which slow downs the bone loss
2) Anabolic drugs that regenerates the bone formation.
Bone Remodeling Cycle: Bone is living, growing tissue that constantly forms new bone while replacing older bone. Bone continuously renews and changes through a process called remodeling.
The bone remodeling cycle consists of two stages: (1) Bone resorption (2) Bone formation. During resorption, special cells (osteoclasts) on the bone's surface dissolve bone tissue and create small cavities. Antiresorptive medications include Bisphosphonates, calcitonin, denosumab, estrogen and estrogen, etc. Teriparatide, a form of parathyroid hormone, increases the rate of bone formation and is in a distinct category of osteoporosis medicines called anabolic drugs.