View FOSRENOL savings options available to you including Manufacturer Coupons, Rx Advantage Savings Card, Canadian Prescription Savings or FOSRENOL Patient Assistance Program.

Programs are suitable for individuals who want to buy FOSRENOL without insurance, with insurance or for those who are underinsured. You can pay as little as $0 per fill.*

Manufactured by Shire US Inc.

*Applicable to Drug Coupons & Patient Assistance Programs

This content is intended for US audiences only

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    Rx Advantage Card

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    Save up to 90%

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    Canadian Prescription Savings

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  • Unavailable

    Drug Coupons

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Jamie Winn NowPatientGreen tick
Updated on 26 Apr 2024

Learn more about FOSRENOL



FOSRENOL is the brand name for lanthanum and is available as a chewable tablet.

What dosages is FOSRENOL available in?

What dosages is FOSRENOL available in?

FOSRENOL is available as a 500 mg, 750 mg, 1000 mg chewable tablet.

What is FOSRENOL used for?

What is FOSRENOL used for?

FOSRENOL is a phosphate binder and is used to treat high blood phosphate levels in advanced kidney disease.

How does FOSRENOL work?

How does FOSRENOL work?

FOSRENOL is a phosphate binder. It binds to the phosphates in your food before they can be absorbed, which lowers phosphorus levels to help protect your kidneys and bones.

How do I take FOSRENOL?

How do I take FOSRENOL?

FOSRENOL is typically dosed as 1,500 mg by mouth, divided into separate doses, three times a day with meals. Your provider will adjust your dose based on the phosphorus level in your blood.

Is it safe for me to take FOSRENOL?

Is it safe for me to take FOSRENOL?

FOSRENOL is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you. You should not use this medication if you have a bowel obstruction, ileus, and fecal impaction.

FOSRENOL Common Side Effects

FOSRENOL Common Side Effects

Common side effects of FOSRENOL:

  • Nausea
  • Vomiting
  • Belly pain
FOSRENOL Serious Side Effects

FOSRENOL Serious Side Effects

Serious side effects are rare with FOSRENOL.

Effects of other drugs, drug classes and over-the-counter products on FOSRENOL

Effects of other drugs, drug classes and over-the-counter products on FOSRENOL

The following medications may interact with FOSRENOL:

  • There is a potential for FOSRENOL to interact with compounds which bind to cationic antacids (i.e., aluminum-, magnesium-, or calcium-based). Therefore, do not take such compounds within 2 hours of dosing with FOSRENOL
  • Oral quinolone antibiotics must be taken at least 1 hour before or 4 hours after FOSRENOL.
  • Do not take thyroid hormone replacement therapy within 2 hours of dosing with FOSRENOL. Monitoring of TSH levels is recommended in patients receiving both medicinal agents
Who makes FOSRENOL?

Who makes FOSRENOL?

Shire US Inc.

Is FOSRENOL safe in pregnancy?

Is FOSRENOL safe in pregnancy?

No adequate and well-controlled studies have been conducted in pregnant women using FOSRENOL. It should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.


What to do if you missed your FOSRENOL dose

The FDA's medical product safety reporting program for health professionals, patients and consumers.

Learn more about reporting side effects
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Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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