Fosrenol
Fosrenol (lanthanum carbonate) is a phosphate-binding medication used to control elevated phosphorus levels in the blood of patients with end-stage renal disease (ESRD) or chronic kidney disease (CKD) who require dialysis. It works by binding to dietary phosphate in the gastrointestinal tract, forming insoluble complexes that are excreted in the stool, thereby reducing phosphate absorption.
Fosrenol is a phosphate binder that helps lower high phosphorus levels in patients with kidney disease requiring dialysis.
Key facts at a glance
- RxNorm
- 356761
- Generic
- Fosrenol
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Fosrenol is indicated for the treatment of hyperphosphatemia in patients with end-stage renal disease (ESRD) or chronic kidney disease (CKD) who are on dialysis. It is used to manage phosphorus levels when dietary phosphate restriction alone is insufficient.
Fosrenol contains lanthanum, a trivalent cation that binds to dietary phosphate in the GI tract. This forms insoluble lanthanum phosphate complexes that cannot be absorbed through the intestinal wall. The bound phosphate is then eliminated with feces, effectively reducing serum phosphorus levels.
Fosrenol tablets are chewable and should be taken with or immediately following meals for optimal efficacy. Common side effects may include gastrointestinal symptoms such as nausea, vomiting, and abdominal pain. Patients should inform their healthcare provider of all medications, as Fosrenol may reduce absorption of other drugs. Regular monitoring of serum phosphorus levels is recommended during treatment.
Official drug label
WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.
This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy