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(alendronate sodium) Tablets, Oral Solution
FOSAMAX (alendronate sodium) is a bisphosphonate that acts as a specific inhibitor of osteoclastmediated bone resorption. Bisphosphonates are synthetic analogs of pyrophosphate that bind to the hydroxyapatite found in bone.
Alendronate sodium is chemically described as (4-amino-1-hydroxybutylidene) bisphosphonic acid monosodium salt trihydrate.
The empirical formula of alendronate sodium is C4H12NNaO7P2•3H2O and its formula weight is 325.12. The structural formula is:
Alendronate sodium is a white, crystalline, nonhygroscopic powder. It is soluble in water, very slightly soluble in alcohol, and practically insoluble in chloroform.
FOSAMAX tablets for oral administration contain 91.37 mg of alendronate monosodium salt trihydrate, which is the molar equivalent of 70 mg of free acid, and the following inactive ingredients: microcrystalline cellulose, anhydrous lactose, croscarmellose sodium, and magnesium stearate.
What are the possible side effects of alendronate (Binosto, Fosamax)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using alendronate and call your doctor at once if you have a serious side effect such as:
- chest pain;
- difficulty or pain when swallowing;
- pain or burning under the ribs or in the back;
- severe heartburn, burning pain in your upper stomach, or coughing up blood;
- new or worsening heartburn;
- fever, body aches, flu symptoms;
- severe joint, bone, or muscle...
What are the precautions when taking alendronate sodium (Fosamax)?
Before taking alendronate, tell your doctor or pharmacist if you are allergic to it; or to other bisphosphonates; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: disorders of the esophagus (such as esophageal stricture or achalasia), trouble swallowing, trouble standing or sitting upright for at least 30 minutes, low calcium levels, kidney problems, stomach/intestinal disorders (such as ulcers).
Some people taking alendronate may have serious jawbone problems. Your doctor should check your mouth before you start this medication. Tell your dentist...
Last reviewed on RxList: 4/24/2015
This monograph has been modified to include the generic and brand name in many instances.
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