Boost your mood and sharpen your focus with Source Naturals L-Phenylalanine, a free-form essential amino acid that helps your body produce key neurotransmitters like norepinephrine and phenylethylamine (PEA). Each 500 mg vegan tablet delivers a pure, absorbable dose to support cognitive health and emotional balance.

How Does L-Phenylalanine Work in the Body?

Once ingested, L-Phenylalanine is converted into L-tyrosine, another amino acid, which then becomes L-dopa and eventually norepinephrine—a key neurotransmitter and adrenal hormone that helps regulate alertness, focus, and the body's stress response.* Additionally, L-Phenylalanine is a direct precursor to phenylethylamine (PEA), a neurotransmitter that supports mood and cognitive sharpness.* By providing the building blocks for these important signaling molecules, L-Phenylalanine plays a fundamental role in mental clarity and emotional balance.

What Makes Source Naturals L-Phenylalanine Special?

This supplement stands out for its quality and purity. Each tablet delivers 500 mg of free-form L-Phenylalanine, ensuring optimal bioavailability. The formula is vegan-friendly, with No animal-derived ingredients, and is manufactured under strict cGMP guidelines established by Health Canada. Source Naturals has been a trusted brand since 1982, committed to supporting optimal health through high-quality nutritional products.

What Is L-Phenylalanine?

L-Phenylalanine is an essential amino acid, meaning your body cannot produce it on its own—you must obtain it from food or supplementation. As a free-form amino acid, it is already in its most absorbable state, requiring No further digestion. This makes it an efficient choice for supporting your body's neurotransmitter production. Source Naturals offers L-Phenylalanine in 500 mg vegan tablets, free from common allergens and artificial additives.

Suggested Use and Dosage for Optimal Results

For best results, take 1 to 2 tablets daily, preferably on an empty stomach or as directed by your healthcare professional. Consistency is key—regular intake helps maintain steady neurotransmitter support. Each bottle contains 50 tablets, providing up to a 50-day supply at the suggested serving size.

Quality Assurance and Safety

Source Naturals manufactures this product in facilities that follow current Good Manufacturing Practises (cGMPs), ensuring rigorous quality control from raw materials to finished product. The tablets are vegan, free from gluten, yeast, soy, and dairy, and contain No artificial colours or preservatives. As with any supplement, consult a healthcare practitioner before use if you are pregnant, nursing, taking medication, or have a medical condition.

These statements have not been evaluated by Health Canada. This product is not intended to diagnose, treat, , or prevent any disease.