Aspartame labeling must indicate phenylalanine content for phenylketonurics. Which statement correctly reflects this requirement?

• A. Contains phenylalanine per dosage unit
• B. May contain tartrazine
• C. Requires a dosage by weight
• D. No phenylalanine in product

Answer: (A)

Aspartame contains phenylalanine, so products with aspartame must warn phenylketonurics about the amount of phenylalanine they would ingest. The correct statement reflects this by indicating that phenylalanine is present per dosage unit (per serving), which allows someone with PKU to gauge intake with each serving. The other options miss the PKU labeling requirement or misstate the product’s content: tartrazine is just a dye and not the PKU warning, dosage-by-weight isn’t how these labels quantify phenylalanine, and saying there is no phenylalanine contradicts the nature of aspartame.