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| Clinical data | |
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| Trade names | Boniva, Bonviva, Bondronat, others |
| AHFS/Drugs.com | Monograph |
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| Routes of administration | By mouth,intravenous |
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| Pharmacokinetic data | |
| Bioavailability | 0.6% |
| Protein binding | 90.9 to 99.5% (concentration-dependent) |
| Metabolism | Nil |
| Eliminationhalf-life | 10 to 60 hours |
| Excretion | Kidney |
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| ECHA InfoCard | 100.214.537 |
| Chemical and physical data | |
| Formula | C9H23NO7P2 |
| Molar mass | 319.231 g·mol−1 |
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Ibandronic acid is abisphosphonate medication used in the prevention and treatment ofosteoporosis and metastasis-associated skeletal fractures in people with cancer.[4] It may also be used to treathypercalcemia (elevated bloodcalcium levels). It is typicallyformulated as itssodiumsaltibandronate sodium.[medical citation needed]
Ibandronate, or ibandronic acid, is primarily used to prevent and treat postmenopausal osteoporosis in women.[5] Its U.S. brand name is Boniva,[5] and in contrast to most other bisphosphonate drugs, Ibandronate can be administered both orally and intravenously.[6]
It was patented in 1986 byBoehringer Mannheim and approved for medical use in 1996.[7]
Ibandronate is indicated for the treatment and prevention of osteoporosis in post-menopausal women.[8] In May 2003, the USFood and Drug Administration (FDA) approved ibandronate as a daily treatment for post-menopausal osteoporosis.[medical citation needed] The basis for this approval was a three-year,randomized,double-blind,placebo-controlledtrial women with post-menopausal osteoporosis.[medical citation needed] Each participant also received daily oral doses ofcalcium and 400IUs [international units] ofvitamin D.[medical citation needed] At the study's conclusion, both doses significantly reduced the occurrence risk of new vertebral fractures by 50–52 percent when compared to the effects of the placebo drug.[medical citation needed]
Ibandronate is efficacious for the prevention of metastasis-related bone fractures in multiple myeloma, breast cancer, and certain other cancers.[9]
In 2008, the USFood and Drug Administration (FDA) issued a communication warning of the possibility of severe and sometimes incapacitating bone, joint or muscle pain.[10] A study conducted by the American Society of Bone and Mineral Research concluded that long-term use ofbisphosphonates, including Boniva, may increase the risk of a rare but serious fracture of the femur.[11] The drug also has been associated withosteonecrosis of the jaw, a relatively rare but serious condition.[12]
Nitrogen containing bisphosphonates, which include ibandronate,pamidronate andalendronate exert their effects on osteoclasts mainly by inhibiting the synthesis of isoprenoid lipids such asisopentenyl diphosphate (IPP),farnesyl diphosphate (FPP), andgeranylgeranyl diphosphate (GGPP) via themevalonate pathway. These isoprenoids are used in posttranslational modification (prenylation) of small GTPases such asRas,Rho, andRac. These prenylated GTPases are necessary for various cellular processes including osteoclast morphology, endosome trafficking, andapoptosis.[13]
| Bisphosphonate | Relative potency |
|---|---|
| Etidronate | 1 |
| Tiludronate | 10 |
| Pamidronate | 100 |
| Alendronate | 100-500 |
| Ibandronate | 500-1000 |
| Risedronate | 1000 |
| Zoledronate | 5000 |
Ibandronate has good oral absorption, for it only takes less than an hour for the drug to reach its peak concentration within the bloodstream.[6] The absorption of the oral tablet can be evaluated by analyzing the following factors of the chemical structure of the active drug Ibandronate: its molecular weight, hydrogen bond acceptors, hydrogen bond donors, and its clogP value. Generally, a medication is predicted to have good oral absorption if the chemical structure of the active ingredient has a molecular weight less than 500g/mol, has less than or equal to ten hydrogen bond acceptors, has less than or equal to five hydrogen bond donors, and its clogP value is less than or equal to five.[15] Ibandronate meets these criteria – its molecular weight is 319.23 g/mol, it has eight hydrogen bond acceptors, five hydrogen bond donors, and its clogP value is in the negative range.[15] It is important, however, to not confuse good oral absorption with bioavailability. Despite the drug’s rapid absorption, Ibandronate has a low bioavailability of 0.63%.[6]
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Ibandronic acid is sold under the brand names Boncare, Boniva, Bondronat, Bonviva, Bandrone, Ibandrix, Adronil, Bondrova, Bonprove, and Fosfonat.
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