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(lanthanum carbonate) Chewable Tablets
FOSRENOL contains lanthanum carbonate (2:3) hydrate with molecular formula La2(CO3)3 xH2O (on average x=4-5 moles of water) and molecular weight 457.8 (anhydrous mass). Lanthanum (La) is a naturally occurring rare earth element. Lanthanum carbonate is practically insoluble in water.
Each FOSRENOL, white to off-white, chewable tablet contains lanthanum carbonate hydrate equivalent to 500, 750, or 1000 mg of elemental lanthanum and the following inactive ingredients: colloidal silicon dioxide NF, dextrates (hydrated) NF, magnesium stearate NF.
FOSRENOL does not contain calcium or aluminum.
What are the possible side effects of lanthanum carbonate (Fosrenol)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using lanthanum carbonate and call your doctor at once if you have a serious side effect such as severe stomach pain or severe constipation.
Less serious side effects may include:
- nausea or vomiting;
- diarrhea or constipation; or
- stomach pain.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects....
What are the precautions when taking lanthanum carbonate chewable tablets (Fosrenol)?
See also Side Effects section.
Before taking lanthanum, tell your doctor or pharmacist if you are allergic to it; 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: stomach/intestinal problems (e.g., ulcers, bowel blockage), mineral imbalance (low level of phosphate in the blood), problems chewing tablets.
This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such activities safely. Limit alcoholic beverages.
Before having an X-ray of your stomach, be sure...
Last reviewed on RxList: 11/14/2012
This monograph has been modified to include the generic and brand name in many instances.
Additional Fosrenol Information
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You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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