Boniva vs. Evenity

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

Key Takeaways

  • Boniva is a once-monthly oral bisphosphonate that slows bone breakdown, while Evenity is a once-monthly injectable that both builds new bone and slows its breakdown.

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

  • Evenity is limited to 12 doses in a lifetime and needs follow-up therapy afterward, while Boniva can be continued indefinitely if it's working.

Boniva vs. Evenity Drug Summary

Boniva

Boniva is a bisphosphonate that slows the cells that break down bone, used to treat and prevent osteoporosis in postmenopausal women. It's taken as a once-monthly oral tablet on an empty stomach, followed by 60 minutes upright to avoid esophageal irritation.

Evenity

Evenity is a sclerostin inhibitor that builds new bone while also slowing bone breakdown, approved for postmenopausal women at high risk for fracture. It's given as two once-monthly subcutaneous injections, for a maximum of 12 months total.

Boniva vs. Evenity Side Effects

Boniva

Most common
headache (>5%)
back pain (>5%)
dyspepsia (>5%)
pain in extremity (>5%)

Evenity

Most common
arthralgia (up to 13.1%)
headache (≥5%)
injection site reactions (up to 4.9%)
injection site pain (up to 1.7%)

Boniva vs. Evenity Dosage

Boniva

Dosage
Dosage Table
STAGE DOSE WHEN
Starting dose 150 mg once monthly At the start
Maximum dose 150 mg once monthly Same as starting
Dose changes None Fixed dose

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

Boniva vs. Evenity Indications

Boniva

Boniva treats and prevents osteoporosis in postmenopausal women by slowing the breakdown of existing bone. It is not approved for men or for pediatric use, and its main goal is preventing fractures by preserving current bone density.

  • Postmenopausal osteoporosis treatment

  • Postmenopausal osteoporosis prevention

  • Not approved for men

  • Not approved for pediatric use

Evenity

Evenity treats osteoporosis in postmenopausal women who are at high risk for fracture, building new bone while also slowing bone loss. It is not approved for men, premenopausal women, or women of reproductive potential.

  • Postmenopausal osteoporosis at high fracture risk

  • Not approved for men

  • Not approved for premenopausal women

  • Not approved for women of reproductive potential

Boniva vs. Evenity Pros and Cons

Boniva

Boniva has a long track record as an oral bisphosphonate, with once-monthly dosing that's simpler than daily or weekly pills. It carries known bisphosphonate risks like esophageal irritation and rare atypical fractures, and it must be dosed carefully in patients with kidney problems.

Pros

  • Oral tablet, no injection needed

  • Only once-monthly oral bisphosphonate option

  • No cardiovascular boxed warning

Cons

  • Must sit upright for 60 minutes after dosing

  • Not recommended in severe renal impairment

  • Slows bone loss but doesn't build new bone

  • Osteonecrosis of the jaw risk with long-term use

Evenity

Evenity offers a unique dual action that both builds new bone and slows its breakdown, useful for women at high fracture risk. It carries a boxed warning for cardiovascular events and is limited to a one-year course, after which another therapy is needed to maintain the gains.

Pros

  • Builds new bone, not just slows its loss

  • May raise bone density faster than bisphosphonates

  • Only two injections needed per month

Cons

  • Boxed warning for heart attack, stroke, and death

  • Not for use within a year of MI or stroke

  • Limited to 12 doses in a lifetime

  • Requires follow-up therapy after treatment ends

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