Not all osteoporosis medications work the same, and that's especially true for the small class of osteoanabolic agents.

Only three approved drugs belong to this category -- teriparatide, abaloparatide (Tymlos), and romosozumab (Evenity) -- and they work by stimulating bone formation instead of by only preventing bone resorption like other classes of osteoporosis drugs like bisphosphonates or denosumab (Prolia, Xgeva).

"What's important to note here is that there's both an increase in bone mineral density (BMD), as well as an improvement in microarchitecture [with these agents]," said Laila Tabatabai, MD, of Houston Methodist's Bone Health Initiative.

"All three of these agents are highly efficacious, [and] have different safety profiles and different administration. It's important to ke

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