Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Risedronate (Actonel) and Prolia (denosumab) are both used to treat osteoporosis, but they work in different ways and have different dosing schedules. Risedronate is a bisphosphonate that you take orally, with options for daily, weekly, or monthly dosing. It helps slow down bone breakdown and is available in a lower-cost generic form. Prolia, on the other hand, is a monoclonal antibody given as an injection by a healthcare professional once every six months. It blocks a protein that signals bone breakdown. While risedronate can cause stomach pain and requires you to stay upright for 30 minutes after taking it, Prolia can lead to dangerously low calcium levels and requires regular blood work. Prolia is not safe during pregnancy, whereas risedronate is not recommended for people with severe kidney disease. Both medications can cause bone, joint, or muscle pain, but Prolia also has a risk of serious infections and allergic reactions.
Risedronate (Actonel)
Prolia (denosumab)
Risedronate (Actonel)
Prolia (denosumab)
Summary of Actonel vs. Prolia
Summary for Bisphosphonate
Prescription only
Risedronate (Actonel) is a first-choice medication used to treat osteoporosis (bone loss or weakening). It can help improve bone mineral density (BMD) and lower the risk of bone fractures. There are several dosing options and a delayed-release form in case a particular dosing schedule is more convenient for some people.
Summary for Monoclonal antibody
Prescription only
Prolia (denosumab) is an injection that's used to treat osteoporosis in adults at high risk of fracture. It's also for those at high risk of fractures from certain cancer medications. It works as a monoclonal antibody called a RANKL inhibitor to strengthen your bones. Prolia (denosumab) is a convenient option because you only need an injection every 6 months. It's injected under the skin by a healthcare professional at a medical office. Side effects include back and muscle pain. It also has a risk of causing dangerously low calcium levels.
Indications of Actonel vs. Prolia
Indications for
•Osteoporosis in women who have gone through menopause (postmenopause)
•Osteoporosis in men
•Osteoporosis caused by long-term corticosteroid use
•Paget's disease
Indications for
•Osteoporosis in women who've gone through menopause and at high risk of fracture