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	Search Quick Order Form» Departments Vitamins Minerals Supplements Herbs Home & Grocery Diet & Fitness Body & Bath More Ways to Shop Brands A-Z Natural Remedies Children & Infants Women's Health Men's Health Seniors Free Catalog MotherNature.com's Catalog Is Here! Click Here to Get Your Free Copy Today. Newsletter Sign Up Weekly health news, sale announcements and coupons!		Library Home > Safetychecker by Drug Name > Alendronate ALENDRONATE Introduction Safetychecker summary Vitamin interactions Food interactions References Visit The Healthy Living Bookshelf: 21 Online Health Books From Rodale Alendronate is a member of the bisphosphonate family of drugs used to treat/prevent osteoporosis. It is also used to treat some bone diseases and some cases of cancer that have spread to bones. Safetychecker Summary for Alendronate (for details about the summarized interactions, read the full article) Check: Other—Before taking any of these supplements or eating any of these foods with your medication, read this article in full for details. Calcium Magnesium Depletion or interference None known Side effect reduction/prevention None known Supportive interaction None known Reduced drug absorption/bioavailability None known Adverse interaction None known Interactions with Dietary Supplements Calcium Calcium supplements may interfere with alendronate absorption.1 However, one researcher suggested that addition of large amounts of supplemental calcium to alendronate therapy in patients with bone metastases (with evidence of osteomalacia) related to prostate cancer might improve the clinical outcome.2 Moreover, both calcium and alendronate are commonly used in the treatment of osteoporosis in the same people. To prevent potential interactions, alendronate should be taken two hours before or after calcium supplements. Magnesium Absorption of tiludronate, a drug related to alendronate, is reduced when taken with magnesium and/or aluminum-containing antacids.3 This interaction has not yet been reported with alendronate. Until more is known, alendronate should be taken two hours before or after magnesium and/or aluminum-containing antacids. Interactions with Foods and Other Compounds Food Food, coffee, and orange juice significantly reduce absorption of alendronate.4 Alendronate should be taken with a large glass of plain water, upon arising in the morning, and 30 minutes or more before any food, beverages, supplements, or other medications.5 People taking alendronate should remain upright (do not lie down) for 30 minutes after taking the drug.6 References: 1. Threlkeld DS, ed. Hormones, Bisphosphonates. InFacts and Comparisons Drug Information. St. Louis, MO: Facts and Comparisons, Jul 1998, 134r. 2. Adami S. Bisphosphonates in prostate carcinoma. Cancer 1997;80:1674–9. 3. Threlkeld DS, ed. Hormones, Bisphosphonates. InFacts and Comparisons Drug Information. St. Louis, MO: Facts and Comparisons, Jul 1998, 134r. 4. Gertz BJ, Holland SD, Kline WF, et al. Studies of the oral bioavailability of alendronate. Clin Pharmacol Ther 1995;58:288–98. 5. Threlkeld DS, ed. Hormones, Bisphosphonates. InFacts and Comparisons Drug Information. St. Louis, MO: Facts and Comparisons, Jul 1998, 134r. 6. Threlkeld DS, ed. Hormones, Bisphosphonates. InFacts and Comparisons Drug Information. St. Louis, MO: Facts and Comparisons, Jul 1998, 134r. Copyright © 2002 Healthnotes, Inc.  All rights reserved. www.healthnotes.com Please read the disclaimer about the limitations of the information provided here. Do NOT rely solely on the information in this article. Learn more about Healthnotes, the company. Learn more about the authors of Safetychecker. The information presented in Healthnotes is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. For many of the conditions discussed, treatment with prescription or over-the-counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires December 2003.

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