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Neurotransmitter precursor support; Nervous system support; Amino acid nutrition
Adults with low dietary intake of protein-rich foods or those seeking amino acid support for busy, mentally demanding days.
Take 1 capsule 1 to 3 times daily, preferably between meals; taking on an empty stomach may support amino acid uptake.
Non-GMO; Vegetarian/Vegan; Kosher; Not manufactured with: wheat, gluten, soy, milk, egg, fish, shellfish, or tree nuts; Produced in a GMP facility that processes other allergens.
L-phenylalanine is an essential amino acid that converts to tyrosine, a precursor for dopamine, norepinephrine, and epinephrine, supporting neurotransmitter production and protein synthesis.
Caution: Avoid if you have phenylketonuria (PKU) or are sensitive to stimulatory effects, as it can raise levels of catecholamine precursors; consult a healthcare professional if pregnant, nursing, have high blood pressure, or take medications.
Label Warning: For adults only. Consult a physician if pregnant or nursing, taking medication, or have a medical condition such as high blood pressure or phenylketonuria (PKU). Settling of powder may occur. Natural color variation may occur.
Who should be cautious: People with high blood pressure or phenylketonuria. Individuals who are pregnant or nursing, on medications, or have underlying medical conditions should discuss use with a healthcare provider before use.
Storage: Store in a cool, dry place after opening.
Many customers mention clearer thinking, improved focus, and better cognitive function.
Capsules are described as simple to take with no lingering taste.
Some did not notice much change, while a few reported intense sensations when taking more capsules.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Focus & Memory Formulas may enhance mental clarity, working synergistically with L-Phenylalanine's potential cognitive benefits.
AI generated. Not medical advice.
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L-Phenylalanine is an essential amino acid that is necessary for the synthesis of proteins. Because L-Phenylalanine can be readily converted into the amino acid tyrosine, which forms part of the structure of the neurotransmitters dopamine and norepinephrine, it is important for the maintenance of a healthy nervous system.
Take 1 capsule 1 to 3 times daily as needed, preferably between meals.
Hypromellose, (cellulose capsule).
Not manufactured with wheat, gluten soy, milk, egg, fish, shellfish, or tree nut ingredients.
Produced in a GMP facility that processes other ingredients containing these allergens.
Made in Canada with globally sourced ingredients.
Settling of powder may occur in the capsule, which is filled by weight without added fillers.
Store in a cool, dry place after opening.
For adults only. Consult physician if pregnant/nursing, taking medication, or have a medical condition [e.g. high blood pressure of phenylketonuria (PKU)].
Keep out of reach of children.
Natural color variation may occur in this product.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size:1 Veg Capsule | ||
| Amount Per Serving | %Daily Value | |
| L-Phenylalanine (Free-Form) | 500 mg | ** |
| **Daily Value not established. | ||
