L-Phenylalanine

An essential aromatic amino acid and the metabolic precursor to tyrosine and the catecholamines, offered free-form and common in mood- and focus-oriented stacks; not suitable for those with PKU.

Has usage cautions — see below

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Checked for identity, regulatory status, and quality before it can appear in the builder — and every order is reviewed before production.

Specimen · Amino Acids

L-Phenylalanine

Ingredient Facts

Amino Acids

Serving range500 mg – 2 g
Typical dose1 g
Available inCapsules · Powder
DietaryVegan · Vegetarian · Gluten free · Caffeine free · Stimulant free
AllergensNone declared

Every amount declared.

Part of the reviewed catalog — every ingredient is checked for identity, regulatory status, quality documentation, and manufacturability before it can appear in the builder. Our ingredient standards

In practiceTypically blended at 1 g per serving · available in capsules and powder · adds about $0.30 per serving in the builder (estimate).

On your label

Supplement Facts

Preview — your blend

L-Phenylalanine1 g

Every amount declared.

Sourcing & testing

Backed by a certificate of analysis
Tested for identity, purity, and potency
Every amount declared on your label

Our ingredient standards

Cautions

Not suitable for people with PKU (phenylketonuria).

Review this ingredient's caution information before ordering. Speak with a qualified healthcare professional if you are pregnant, nursing, under 18, taking medication, or managing a medical condition.

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L-Phenylalanine

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