Generic Name: Lanthanum Chewable Tablets (LAN tha num)
Brand Name: Fosrenol
Medically reviewed on September 5, 2018
Uses of Fosrenol:
- It is used to lower high phosphate levels.
What do I need to tell my doctor BEFORE I take Fosrenol?
- If you have an allergy to lanthanum or any other part of Fosrenol (lanthanum chewable tablets).
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you have a bowel block.
- If you have hard stools (constipation).
This is not a list of all drugs or health problems that interact with Fosrenol (lanthanum chewable tablets).
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Fosrenol (lanthanum chewable tablets) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Fosrenol?
- Tell all of your health care providers that you take Fosrenol (lanthanum chewable tablets). This includes your doctors, nurses, pharmacists, and dentists.
- Have blood work checked as you have been told by the doctor. Talk with the doctor.
- Tell your doctor that you use Fosrenol (lanthanum chewable tablets) if you are getting x-rays near the belly.
- Very bad stomach or bowel blockage has happened with Fosrenol (lanthanum chewable tablets). A hole in the bowel has also happened. Sometimes, this has led to the need for surgery or treatment in a hospital. Talk with your doctor.
- Do not give to a child. Talk with your doctor.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using Fosrenol (lanthanum chewable tablets) while you are pregnant.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
How is this medicine (Fosrenol) best taken?
Use Fosrenol (lanthanum chewable tablets) as ordered by your doctor. Read all information given to you. Follow all instructions closely.
- Take with or right after a meal.
- Do not take antacids within 2 hours before or 2 hours after taking Fosrenol (lanthanum chewable tablets).
- This medicine prevents many other drugs from getting into the body. If you take other drugs, check with your doctor or pharmacist to see if you need to take them at some other time than Fosrenol (lanthanum chewable tablets).
- Keep taking Fosrenol (lanthanum chewable tablets) as you have been told by your doctor or other health care provider, even if you feel well.
- To gain the most benefit, do not miss doses.
- Chew or crush well. Do not swallow it whole.
- Be sure to fully chew the whole dose before you swallow. This may help lower the risk of very bad stomach or bowel side effects.
What do I do if I miss a dose?
- Take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
See also: Dosage Information (in more detail)
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:
- Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Very upset stomach or throwing up.
- Very bad belly pain.
- Very hard stools (constipation).
- Very loose stools (diarrhea).
What are some other side effects of Fosrenol?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:
- Loose stools (diarrhea).
- Belly pain.
- Upset stomach or throwing up.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.
See also: Side effects (in more detail)
If OVERDOSE is suspected:
If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
How do I store and/or throw out Fosrenol?
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
Consumer information use
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- This medicine comes with an extra patient fact sheet called a Medication Guide. Read it with care. Read it again each time Fosrenol (lanthanum chewable tablets) is refilled. If you have any questions about Fosrenol (lanthanum chewable tablets), please talk with the doctor, pharmacist, or other health care provider.
- If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
More about Fosrenol (lanthanum carbonate)
- Fosrenol Side Effects
- During Pregnancy
- Dosage Information
- Drug Images
- Drug Interactions
- Support Group
- Pricing & Coupons
- En Español
- 2 Reviews
- Generic Availability
- Drug class: phosphate binders