Lanthanum is used to reduce blood levels of phosphate in patients with kidney disease. High levels of phosphate in the blood can cause bone problems. Lanthanum is in a class of medications called phosphate binders. It works by preventing absorption of phosphate from food in the stomach.
Lanthanum comes as a chewable tablet to take by mouth. It is usually taken with or immediately after food several times a day as directed by your doctor. Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take lanthanum exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
Chew the tablets completely before swallowing; do not swallow the tablets whole. If you have trouble chewing the tablets you may crush them before chewing.
Your doctor will probably start you on a low dose of lanthanum and gradually increase your dose, not more often than once every 2 to 3 weeks.
This medication may be prescribed for other uses; ask your doctor or pharmacist for more information.
Your doctor may instruct you to follow a low-phosphorus diet. Follow these directions carefully.
Take the missed dose with food as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
abdominal (stomach area) pain
severe abdominal pain or cramping
pain and swelling of the abdomen
inability to pass gas or have a bowel movement
Lanthanum may cause other side effects. Call your doctor if you have any unusual problems while taking this medication.
If you experience a serious side effect, you or your doctor may send a report to the Food and Drug Administration's (FDA) MedWatch Adverse Event Reporting program online [at http://www.fda.gov/Safety/MedWatch] or by phone [1-800-332-1088].
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture (not in the bathroom). Throw away any medication that is outdated or no longer needed. Talk to your pharmacist about the proper disposal of your medication.
In case of overdose, call your local poison control center at 1-800-222-1222. If the victim has collapsed or is not breathing, call local emergency services at 911.
Keep all appointments with your doctor and the laboratory. Your doctor will order certain lab tests to check your body's response to lanthanum.
Before having any x-rays of your abdominal area, tell your doctor and the x-ray technicians that you are taking lanthanum.
Do not let anyone else take your medication. Ask your pharmacist any questions you have about refilling your prescription.
It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.
Last Revised - 05/15/2014
AHFS® Consumer Medication Information. © Copyright, 2015. The American Society of Health-System Pharmacists, Inc., 7272 Wisconsin Avenue, Bethesda, Maryland. All Rights Reserved. Duplication for commercial use must be authorized by ASHP.