Actonel vs. Evenity

See how Actonel and Evenity compare on approved uses, dosing, side effects, and cost.

Key Takeaways

  • Actonel is a low-cost oral bisphosphonate that slows bone loss, while Evenity is an injectable bone-building drug limited to 12 doses in a lifetime.

  • Evenity carries a boxed warning for heart attack, stroke, and cardiovascular death that Actonel does not carry.

  • Actonel is approved for men, glucocorticoid-induced osteoporosis, and Paget's disease, while Evenity is approved only for postmenopausal women at high fracture risk.

Actonel vs. Evenity Drug Summary

Actonel

Actonel (risedronate) is an oral bisphosphonate that slows the breakdown of bone tissue to treat and prevent osteoporosis. It comes in daily, weekly, twice-monthly, or once-monthly tablets, giving patients flexibility in how they take it. It is also approved for osteoporosis in men, glucocorticoid-induced osteoporosis, and Paget's disease of bone.

Evenity

Evenity (romosozumab) is a monoclonal antibody that both builds new bone and reduces bone breakdown, a dual action unique among osteoporosis drugs. It is given as a once-monthly injection of two syringes and is approved only for postmenopausal women at high risk of fracture. Treatment is capped at 12 doses in a lifetime, after which patients switch to another osteoporosis drug.

Actonel vs. Evenity Side Effects

Actonel

Most common
pain in extremity (up to 21%)
headache (up to 20%)
back pain (up to 17%)
generalized pain (up to 15%)

Evenity

Most common
arthralgia (up to 13.1%)
headache (≥5%)
injection site reactions (up to 4.9%)
nasopharyngitis (≥2%)

Actonel vs. Evenity Dosage

Actonel

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 5 mg once daily At the start
Maximum dose 150 mg once monthly If needed
Dose changes 4 increases As tolerated

Evenity

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 210 mg once monthly At the start
Maximum dose 210 mg once monthly Same as starting
Dose changes None Fixed dose

Actonel vs. Evenity Indications

Actonel

Actonel is FDA-approved for a wide range of osteoporosis-related conditions, including postmenopausal osteoporosis, osteoporosis in men, and glucocorticoid-induced bone loss. It is also one of the few bisphosphonates approved to treat Paget's disease of bone.

  • Treatment and prevention of postmenopausal osteoporosis

  • Treatment to increase bone mass in men with osteoporosis

  • Treatment and prevention of glucocorticoid-induced osteoporosis

Evenity

Evenity is FDA-approved specifically for postmenopausal women with osteoporosis who are at high risk of fracture, such as those with a prior fracture or very low bone density. It is not approved for men, premenopausal women, or women of reproductive potential.

  • Postmenopausal osteoporosis in women at high fracture risk

  • Not approved for men or premenopausal women

  • Limited to a maximum of 12 monthly doses in a lifetime

Actonel vs. Evenity Pros and Cons

Actonel

Actonel has decades of real-world use and comes in multiple oral dosing schedules, giving patients flexibility. As a generic bisphosphonate, it is far less expensive than newer injectable options like Evenity. It works mainly by slowing bone breakdown rather than actively building new bone.

Pros

  • Available in daily, weekly, or monthly tablets for flexible dosing

  • Approved for men, Paget's disease, and steroid-induced bone loss, not just postmenopausal women

  • Long safety track record since 1998 approval

  • Generic version widely available, roughly $340 to $483 per month before insurance

Cons

  • Requires strict dosing rules: take with water and remain upright for 30 minutes

  • No dual bone-building action, only slows bone breakdown

  • Not recommended for patients with severe kidney impairment

  • Esophageal irritation risk with improper use

Evenity

Evenity works differently from Actonel, both building new bone and slowing its breakdown in a single drug. It carries a boxed warning for heart attack, stroke, and cardiovascular death, and treatment is capped at 12 monthly doses in a lifetime. Its once-monthly injection requires two syringes per dose.

Pros

  • Dual mechanism builds new bone while also slowing bone loss

  • Only 12 doses total needed over the full treatment course

  • Once-monthly injection avoids daily pill routine

  • First-in-class sclerostin inhibitor, a new option for high-risk patients

Cons

  • Boxed warning for heart attack, stroke, and cardiovascular death

  • Approved only for postmenopausal women, not men or premenopausal women

  • Requires follow-up antiresorptive therapy after the 12-dose course ends

  • Costs roughly $1,825 to $2,629 per month before insurance, far more than Actonel

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