Skip to main content

Fosrenol Dosage

Generic name: LANTHANUM CARBONATE 500mg
Dosage forms: tablet, chewable, oral powder
Drug class: Phosphate binders

Medically reviewed by Last updated on Dec 20, 2023.

Divide the total daily dose of FOSRENOL and take with or immediately after meals. The recommended initial total daily dose of FOSRENOL is 1,500 mg. Titrate the dose every 2 to 3 weeks until an acceptable serum phosphate level is reached. Monitor serum phosphate levels as needed during dose titration and on a regular basis thereafter.

FOSRENOL has the potential to bind other orally administered drugs; consider separating the administration of other oral medications [see Drug Interactions (7)].

In clinical studies of patients with ESRD, FOSRENOL doses up to 4,500 mg were evaluated. Most patients required a total daily dose between 1,500 mg and 3,000 mg to reduce plasma phosphate levels to less than 6.0 mg/dL. Doses were generally titrated in increments of 750 mg/day.

Information for FOSRENOL Chewable Tablets

Chew or crush FOSRENOL Chewable Tablets completely before swallowing. Do not swallow intact FOSRENOL Chewable Tablets.

Information for FOSRENOL Oral Powder

Sprinkle FOSRENOL Oral Powder on a small quantity of applesauce or other similar food and consume immediately. Do not open until ready to use. Do not store FOSRENOL Oral Powder for future use once mixed with food. Because FOSRENOL Oral Powder is insoluble, do not attempt to dissolve in liquid for administration.

Consider using the oral powder formulation in patients with poor dentition or who have difficulty chewing tablets.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.