phenylalanine
An essential amino acid occurring in proteins. A small amount of phenylalanine is necessary in the diet to make the proteins that form human tissues.
Last Updated
October 7, 2025
October 7, 2025
Last updated: October 7, 2025.
This article was contributed by .
Explore More
Dry mouth: Causes, symptoms and what you can do
Everyone has experienced dry mouth before. You fall asleep with a stuffy nose, get nervous before public speaking or exercise in the heat, and before you know it, you desperately need a drink. Usua...