PV Bulletin

FDA Adds Boxed Warning to Labeling for Ferric Carboxymaltose Injection (Injectafer) to Describe Risk of Low Phosphate Levels

The FDA has approved new labeling for ferric carboxymaltose injection, adding a boxed warning regarding the risk of symptomatic hypophosphatemia.

Primary source: Drug Safety Communications

PV Impact Brief

Urgency: HighConfidence: high

What changed

A boxed warning regarding the risk of symptomatic hypophosphatemia has been added to the labeling of ferric carboxymaltose injection (Injectafer).

Why it matters

This change highlights serious health risks associated with Injectafer, including low phosphate levels that could lead to severe complications like muscle weakness, fatigue, and bone softening, necessitating careful monitoring and management in treated patients.

Action needed

Healthcare providers must utilize updated labels and ensure phosphate levels are monitored in at-risk patients and those receiving repeat therapy within three months.

Relevant for
Labeling LeadRegulatory Intelligence Lead
Processes impacted
Labeling
Owner

Regulatory Intelligence Lead

Review cadence

Review in the next regulatory intelligence cycle.

Evidence and confidence

Confidence: highSource updated: Sep 1, 2026

Full briefing

Practical implication

Healthcare providers must utilize updated labels and ensure phosphate levels are monitored in at-risk patients and those receiving repeat therapy within three months.

The FDA has revised the labeling for ferric carboxymaltose injection (Injectafer) to include a boxed warning for symptomatic hypophosphatemia. Effective September 1, 2026, this warning emphasizes the importance of monitoring serum phosphate levels in patients at risk, particularly those receiving repeat courses of therapy.

What changed: A boxed warning regarding the risk of symptomatic hypophosphatemia has been added to the labeling of ferric carboxymaltose injection (Injectafer).

Why it matters: This change highlights serious health risks associated with Injectafer, including low phosphate levels that could lead to severe complications like muscle weakness, fatigue, and bone softening, necessitating careful monitoring and management in treated patients.

Practical implication: Healthcare providers must utilize updated labels and ensure phosphate levels are monitored in at-risk patients and those receiving repeat therapy within three months.

View original source

  • Source: FDA - What's New Drugs RSS
  • Published at source: 2026-09-01T00:00:00.000Z
  • Discovered by monitor: 2026-09-01T21:41:27.363Z

Published from the regulator source ingestion pipeline after PV impact triage.

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