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Oral bisphosphonates are well established as a first -line option for the treatment of osteoporosis. Bisphosphonates inhibit bone resorption, increase bone mineral density (BMD) and decrease the risk of osteoporotic fractures.

For alendronate and risedronate, weekly administration is as effective as once daily dosing. More recently, a presentation of risedronate has become available in a format that allows treatment to be administered once a month, and it is expected that this will further improve ease of administration and patient compliance.

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The 2009 RGH E-Bulletins are archived here.

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A joint initiative of the Patient Services Section and the Drug and Therapeutics Information Service of the Pharmacy Department, Repatriation General Hospital, Daw Park, South Australia. The RGH Pharmacy E-Bulletin is distributed in electronic format on a weekly basis, and aims to present concise, factual information on issues of current interest in therapeutics, drug safety and cost-effective use of medications.
Editor: Assoc. Prof. Chris Alderman, University of South Australia – Director of Pharmacy, RGH © Pharmacy Department, Repatriation General Hospital, Daw Park, South Australia 5041.

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Bisphosphonate is regarded as the first line treatment for postmenopausal osteoporosis. Adherence to oral bisphosphonate therapy can be an issue for patients with poor compliance (with weekly dosing), patients unable to remain upright for 30 minutes and patients with oesophageal and upper gastrointestinal disorders.

Zoledronic acid (Aclasta®) is an intravenously administered bisphosphonate approved for the prevention of fracture in osteoporosis. Zoledronic acid 4mg (Zometa®) is used to treat hypercalcaemia and prevent skeletal-related events in people with malignancy………

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There was a late addendum for this article:

Further to the distribution of the RGH E-Bulletin 34-11 on Monday 13th July 2009: Please note that when administered for the management of osteoporosis, zoledronic acid (Aclasta® 5 mg) is administered by intravenous infusion, at a frequency of once every 12 months

Previous editions of the RGH E-Bulletin can be accessed at http://www.auspharmlist.net.au/ebulletin.php

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