Round white L-Phenylalanine tablet with a cross-score mark on a white reflective surface.

L-Phenylalanine

Also known as: Phenylalanine, L-Phenylalanine, D,L-Phenylalanine, L-2-Amino-3-phenylpropanoic acid, Phenylalanine hydrochloride

L-Phenylalanine is an essential amino acid vital for human health, primarily found in protein-rich foods such as nuts, seeds, meat, fish, eggs, dairy products, and soy products. As our bodies cannot synthesize it, obtaining L-Phenylalanine through diet or supplements is crucial. This amino acid plays a pivotal role in the formation of neurotransmitters, crucial chemicals in the brain that facilitate communication between nerve cells. A significant neurotransmitter derived from L-Phenylalanine is dopamine, which influences mood regulation, cognitive focus, and the brain's reward sensations. Wh...

Potential Side Effects

Side effects score: 3; L-Phenylalanine may cause gastrointestinal issues such as nausea and heartburn, as well as headaches, dizziness, increased heart rate, and anxiety. It is important to note that this supplement can interact with certain medications and poses risks for individuals with phenylketonuria (PKU) or those taking MAO inhibitors.

Health Categories

View efficacy ratings for L-Phenylalanine across multiple health categories.

Research & Evidence

Our efficacy ratings are based on scientific research and clinical studies.

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