What action did the FDA take regarding FD&C Blue #1 after reports of systemic toxicity?

• A. FDA required warning labels on products containing Blue#1
• B. FDA restricted its use to enteral feeding devices only
• C. FDA removed FD&C Blue#1 from the market in 2003
• D. FDA approved its use for detecting aspiration

Answer: (C)

Regulatory actions respond to evidence of harm by protecting the public, and removing an additive from the market is the strongest way to stop exposure when systemic toxicity is identified. After reports of systemic toxicity linked to FD&C Blue #1, the FDA concluded that the risks outweighed the benefits and withdrew the color additive from sale in 2003. This move eliminates exposure entirely, which is necessary when safety concerns are broad and clear, rather than just warning consumers or narrowing how the dye can be used. The other options describe more limited or specific measures (warning labels, restricting use to a single setting, or approving a diagnostic use), which wouldn’t fully address the broader toxicity signal that led to removing the dye.