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Phenylalanine

Phenylalanine is one of the eight essential amino acids necessary for the basic functioning of human cells that leads to normal growth and development. It is found in most foods, especially those high in protein, such as meat, cheese, and milk.

Food labeling laws require products that contain phenylalanine to be labeled with a warning for people who have the inherited disorder phenylketonuria (PKU), because these people cannot safely consume phenylalanine. For example, aspartame, a common sweetener, is a nonprotein source of phenylalanine. Aspartame is used in many diet soda pops and sugar-free foods.

By Healthwise Staff
Primary Medical Reviewer John Pope, MD - Pediatrics
Specialist Medical Reviewer Chuck Norlin, MD - Pediatrics
Current as of June 26, 2013

WebMD Medical Reference from Healthwise

Last Updated: June 26, 2013
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.