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Drug Safety-related Labeling Changes (SrLC)

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FOSRENOL (NDA-021468)

(LANTHANUM CARBONATE)

Safety-related Labeling Changes Approved by FDA Center for Drug Evaluation and Research (CDER)

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08/29/2024 (SUPPL-25)

Approved Drug Label (PDF)

4 Contraindications

Additions and/or revisions underlined:

Contraindicated in patients with:

  • hypersensitivity to FOSRENOL or to any ingredient in the formulation.

  • bowel obstruction, including ileus and fecal impaction.

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

MEDICATION GUIDE

Additions and/or revisions underlined:

Who should not take FOSRENOL?

Do not take FOSRENOL if you:

    • are allergic to lanthanum carbonate or any of the other ingredients of this medicine

    • have blocked bowels

    • have severe constipation

12/12/2023 (SUPPL-24)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Gastrointestinal Adverse Effects

(Additions and/or revisions underlined)

Serious cases of gastrointestinal obstruction, ileus, subileus, gastrointestinal perforation, and fecal impaction have been reported in patients taking lanthanum, some requiring surgery or hospitalization. Consider discontinuing FOSRENOL in patients without another explanation for severe gastrointestinal symptoms.

Advise patients who are prescribed FOSRENOL Chewable Tablets to chew the tablet completely and not to swallow them whole. Serious gastrointestinal complications have been reported in association with unchewed or incompletely chewed tablets. [see Adverse Reactions (6.2)].

5.2 Diagnostic Tests

(Additions and/or revisions underlined)

FOSRENOL has radio-opaque properties and therefore may give the appearance typical of an imaging agent during abdominal X-ray procedures. Postmarketing reports of product residue have been reported during endoscopic imaging.

05/10/2023 (SUPPL-26)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Gastrointestinal Adverse Effects

Additions and/or revisions underlined:

Serious cases of gastrointestinal obstruction, ileus, subileus, gastrointestinal perforation, and fecal impaction have been reported in patients taking lanthanum, some requiring surgery or hospitalization. Consider discontinuing FOSRENOL in patients without another explanation for severe gastrointestinal symptoms.

05/11/2020 (SUPPL-23)

Approved Drug Label (PDF)

5 Warnings and Precautions

Gastrointestinal Adverse Effects

(Additions and/or revisions underlined)

Serious  cases  of  gastrointestinal  obstruction,  ileus,  subileus,  gastrointestinal  perforation,  and  fecal impaction have been reported in patients taking lanthanum, some requiring surgery or hospitalization.

Risk factors for gastrointestinal obstruction and gastrointestinal perforation identified from post-marketing reports in patients taking FOSRENOL Chewable Tablets include abnormal gastrointestinal anatomy (e.g., diverticular disease, peritonitis, history of gastrointestinal surgery, gastrointestinal cancer, gastrointestinal ulceration), hypomotility disorders (e.g., constipation, ileus, subileus, diabetic gastroparesis), and the use of medications known to potentiate these effects. Some cases were reported in patients with no history of gastrointestinal disease.

During treatment with FOSRENOL, physicians and patients should remain vigilant for signs and symptoms of gastrointestinal disorders, especially constipation and abdominal pain/distention, which may indicate bowel obstruction, ileus, or subileus.

Treatment with FOSRENOL should be re-evaluated in patients who develop severe constipation or other severe gastrointestinal signs and symptoms.

6 Adverse Reactions

Clinical Trials Experience

(Newly added information)

Overall, the safety profile of FOSRENOL has been studied in over 5,200 subjects in completed clinical trials
Use with Other Oral Medications

(Newly added subsection)

8 Use in Specific Populations

Lactation

(PLLR conversion. Please refer to label for complete information.)

Pregnancy

(PLLR conversion. Please refer to label for complete information.)

17 PCI/PI/MG (Patient Counseling Information/Patient Information/Medication Guide)

Medication Guide

(Newly added information)

Tell your healthcare provider about all the medicines you take, including prescription and non-prescription medicines, vitamins, and herbal supplements.

11/08/2018 (SUPPL-21)

Approved Drug Label (PDF)

5 Warnings and Precautions

5.1 Gastrointestinal Adverse Effects

Additions and/or revisions underlined:

… some requiring surgery or hospitalization. Consider discontinuing FOSRENOL in patients without another explanation for severe gastrointestinal symptoms.

… diabetic gastroparesis), and the use of medications known to potentiate these effects

Advise patients who are prescribed FOSRENOL Chewable Tablets to chew the tablet completely and not to swallow them whole. Serious gastrointestinal complications have been reported in association with unchewed or incompletely chewed tablets.

02/24/2016 (SUPPL-20)

Approved Drug Label (PDF)

5 Warnings and Precautions

  • Serious cases of gastrointestinal obstruction, ileus, subileus, gastrointestinal perforation and fecal impaction have been reported in patients taking association with lanthanum, some requiring surgery or hospitalization. Risk factors for gastrointestinal obstruction and gastrointestinal perforation identified from post-marketing reports in patients taking FOSRENOL Chewable Tablets include altered gastrointestinal anatomy (e.g., diverticular disease, peritonitis, history of gastrointestinal surgery, gastrointestinal colon cancer, gastrointestinal ulceration), hypomotility disorders (e.g., constipation, ileus, subileus, diabetic gastroparesis) and concomitant medications (e.g., calcium channel blockers). Some cases were reported in patients with no history of gastrointestinal disease.
  • Advise patients who are prescribed FOSRENOL Chewable Tablets to chew the tablet completely to reduce the risk of serious adverse gastrointestinal events such as those described above.

6 Adverse Reactions

The following adverse reactions are discussed in greater detail in other sections of the labeling:

  • Gastrointestinal Adverse Effects
Postmarketing Experience

Intestinal perforation, intestinal obstruction, ileus, subileus