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Last month, the Food and Drug Administration approved an injectable formulation of ibandronate, the first intravenous treatment for osteoporosis to become available and the first bisphosphonate administered once every 3 months.
The approved dose is 3 mg, administered intravenously over 15-30 seconds, by a health care professional, once every 3 months. Ibandronate is the third such formulation approved by the FDA; the first, a daily 2.5-mg formulation approved in 2003, was never marketed because of the availability of more convenient weekly bisphosphonate formulations that were already available at that time. A monthly oral formulation of ibandronate (150 mg) was approved and marketed almost a year ago. Like the monthly formulation, the IV formulation will be marketed under the trade name Boniva, by Hoffmann-La Roche. It will be available "early this year," according to a press release announcing the approval. At press time, the company had not provided information on its cost.
Bypassing the esophagus and stomach--eliminating the need to sit upright without drinking or eating for 30-60 minutes after taking an oral bisphosphonate that is required to reduce the risk of esophagitis and gastritis--is perhaps the most obvious advantage of the IV formulation, said Dr. Robert Recker, director of the Creighton University Osteoporosis Research Center, Omaha, Neb.
Injectable ibandronate can also be used for patients who cannot swallow well, and having the patient come to the office once every 3 months for an injection assures compliance and may be more convenient for patients, added Dr. Recker, who is also professor of medicine and chief of the division of endocrinology at the University. He is a consultant to Roche, and to manufacturers of other osteoporosis therapies, and has conducted clinical trials funded by all these companies.
Dr. Recker was among the investigators in the DIVA (the Dosing Intravenous Administration) study, a randomized, double-blind multinational "noninferiority" study of 1,358 women with postmenopausal osteoporosis. The study compared 2.5 mg of ibandronate daily with the injectable formulation once every ...
Source: HighBeam Research, FDA approves first IV osteoporosis therapy.(Gynecology)