FD&C Blue No. 1

FD&C Blue No. 1 in Medications

FD&C Blue No. 1: A Common Blue Dye

FD&C Blue No. 1 is a color additive used in some medications for appearance and product identification.

It does not treat symptoms.

What Is FD&C Blue No. 1?

FD&C Blue No. 1 is a synthetic dye used in pharmaceuticals and foods. It may appear as a dye or as an aluminum lake in coatings.

Why Is FD&C Blue No. 1 Used in Medications?

It is used because it:

  • Provides consistent color
  • Helps distinguish products or strengths
  • Improves visual identification

Ingredient Names to Look For

It may be listed as:

  • FD&C Blue No. 1
  • FD&C Blue 1
  • Blue 1
  • Brilliant Blue FCF
  • FD&C Blue No. 1 Aluminum Lake

Where Does It Appear?

It is commonly found in:

  • Tablet coatings
  • Capsule shells
  • Liquids, suspensions, and syrups

How to Check a Medication’s Ingredient List

Dyes vary by manufacturer and dosage form.

Use PillParser to scan a medication and view its ingredient list.



Type a brand (Advil) or generic (Ibuprofen). We’ll find the label details.

To keep PillParser free, anonymous scans are limited.

Understanding ingredient differences is especially important for individuals with known sensitivities. RxAllergyScan.com allows users to compare medication ingredients against their personal allergen profile.

Educational Note

This page provides educational information only and does not make medical claims.