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Life is everything. Let's make it a healthy one!

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Life is everything. Let's make it a healthy one!

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What Is Phenylalanine & What Foods Can I Find It In?

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3D-model of Phenylalanine (src)

Phenylalanine is an essential amino acid. Phenylalanine is the starting compound used in the synthesis of flavonoids in plants.

Essential means that the body cannot synthesize it, and therefore must be ingested through our diet.

Phenylalanine Is Important

Phenylalanine is an essential amino acid in humans. Phenylalanine is important in the biosynthesis of other amino acids.

It works with the structure and function of many proteins and enzymes. (source )

Phenylalanine is highly concentrated in the brain and the plasma. (source )

You can find benefits of phenylalanine in Phenylalanine: 4 Research-Backed Benefits .

Phenylalanine And Aspartame

You common can find phenylalanine in products with the artificial sweetener, aspartame.

The ingredients of aspartame are phenylalanine and aspartic acid. Both are naturally occurring amino acids.

Aspartame is an intense, low-calorie, artificial sweetener. It is about 200 times sweeter than sucrose.

Aspartame should be avoided by pregnant women and people that have phenylketonuria. (source )

Foods You Can Find Phenylalanine In

You find Phenylalanine mostly in dairy and egg, legume, american indian and alaska native food, nut and seed products.

Examples of food sources include

  • Egg White
  • Soy Protein
  • Bearded Seal
  • Cottonseed Flour

Foods That Contain Phenylalanine In Our Nutrition Tool

You can find regularly updated top ranked lists of foods for over 200+ nutrients in our nutrition tool.

If you are interested in what foods contain the most Phenylalanine we recommend you visit our tool.

Here's our top ranked list of foods that contain Phenylalanine.

Sara Niemelä

co-founder Care Omnia, Head Content Creator


Nutrition is my passion. I've spent thousands upon thousands of hours reading, analyzing, categorizing and comparing research studies.

I’m a wife and a mother of three. I enjoy the outdoors, cooking, and spending time with my family.