Sequential therapy (osteoporosis)

Sequential therapy means using osteoporosis medications in a planned order rather than one drug alone, because different medications work in different ways and their effects don't last forever. A common pattern is starting with an anabolic agent (bone-building drugs like teriparatide, abaloparatide, or romosozumab) and then switching to an antiresorptive drug (like a bisphosphonate or denosumab) to help lock in the gains. This order matters: anabolic drugs tend to work best when used first, since starting an antiresorptive beforehand can blunt the bone-building response.

The idea is that anabolic agents stimulate new bone formation for a limited treatment period, and bone gained this way can be lost again if nothing follows it. Following up with an antiresorptive helps maintain the new bone density by slowing the breakdown side of bone remodeling. This 'build then preserve' approach is a standard strategy doctors use for people at high fracture risk, especially after a course of romosozumab or teriparatide.

Sequencing decisions depend on a person's fracture risk, prior treatments, side effects, and other health factors, so this is always something to work out with your prescriber rather than a general rule to follow on your own. Weight-bearing exercise and good nutrition can support overall bone health alongside medication, but they don't replace or substitute for a prescribed drug sequence. Never start, stop, or switch osteoporosis medications without your doctor's guidance.