Fosamax vs. Boniva
See how Fosamax and Boniva compare on approved uses, dosing, side effects, and cost.
Key Takeaways
Fosamax and Boniva are both bisphosphonates that slow bone loss, but Fosamax has broader FDA approval, including for men and Paget's disease of bone.
Fosamax is taken daily or weekly, while Boniva is taken just once a month, which some patients find easier to remember.
Both drugs carry the same class warnings, including esophageal irritation and rare jaw bone problems, and both require staying upright after dosing.
Fosamax vs. Boniva Drug Summary
Fosamax
Fosamax (alendronate) is an oral bisphosphonate that treats and prevents osteoporosis in postmenopausal women, treats osteoporosis in men, and treats glucocorticoid-induced osteoporosis and Paget's disease of bone. It comes as a daily or weekly tablet, taken first thing in the morning on an empty stomach with plain water.
Boniva
Boniva (ibandronate) is an oral bisphosphonate approved to treat and prevent osteoporosis in postmenopausal women. It's taken as a single 150 mg tablet once a month, first thing in the morning on an empty stomach with plain water.
Fosamax vs. Boniva Side Effects
Fosamax
Boniva
Fosamax vs. Boniva Dosage
Fosamax
Boniva
| STAGE | DOSE | WHEN |
| Starting dose | 5 mg once daily | At the start |
| Maximum dose | 70 mg once weekly | If needed |
| Dose changes | 4 increases | As tolerated |
| 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 |
Fosamax
| STAGE | DOSE | WHEN |
| Starting dose | 5 mg once daily | At the start |
| Maximum dose | 70 mg once weekly | If needed |
| Dose changes | 4 increases | As tolerated |
Boniva
| 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 |
Fosamax vs. Boniva Indications
Fosamax
Fosamax covers the widest range of bisphosphonate uses, from preventing and treating osteoporosis in postmenopausal women to treating osteoporosis in men. It's also approved for glucocorticoid-induced osteoporosis and Paget's disease of bone, conditions Boniva does not cover.
Treatment of osteoporosis in postmenopausal women
Prevention of osteoporosis in postmenopausal women
Treatment to increase bone mass in men with osteoporosis
Boniva
Boniva is approved only for postmenopausal osteoporosis, both to treat and to prevent it. It doesn't carry indications for men, glucocorticoid-induced bone loss, or Paget's disease.
Treatment of osteoporosis in postmenopausal women
Prevention of osteoporosis in postmenopausal women
Not approved for osteoporosis in men or other bone conditions
Fosamax vs. Boniva Pros and Cons
Fosamax
Fosamax has the broadest approved use of any oral bisphosphonate and decades of real-world safety data behind it. It offers daily and weekly dosing options, letting patients and doctors pick a schedule that fits.
Pros
Approved for a wider range of conditions, including Paget's disease and osteoporosis in men
Offers both daily and weekly dosing options to fit different routines
Longest track record of any oral bisphosphonate, approved since 1995
Cons
Requires more frequent dosing (daily or weekly) than Boniva's once-monthly schedule
More strengths and schedules to keep track of than Boniva's single dose
Oral solution option requires careful handling for those with swallowing difficulty
Boniva
Boniva's main appeal is simplicity: one tablet, once a month, with no choice of strength to manage. Its approved use is narrower than Fosamax's, limited to postmenopausal osteoporosis.
Pros
Only needs to be taken once a month, the least frequent oral bisphosphonate schedule
Single flat dose with no titration or strength choices to manage
Only one tablet to keep track of each month, unlike Fosamax's multiple strengths
Cons
Only approved for postmenopausal women, not for men or other bone diseases
Requires standing upright for 60 minutes after dosing, longer than Fosamax's 30 minutes
No daily dosing option if a monthly dose is missed or not well tolerated
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