Essential amino acid · Nutritional foundation
L-Phenylalanine
130 mg · per serving (3 capsules)
L-phenylalanine — essential aromatic amino acid

What it is
One of the nine essential amino acids — those the body cannot synthesise on its own and must receive from dietary or supplementary sources. Only the L-isomer, verified by chromatography on every incoming lot.
What it does
Documented in reference literature as a substrate in the aromatic amino acid metabolic pathway — the same pathway involving Acetyl-L-Tyrosine in this composition. Studied for its foundational nutritional role.
Why this choice
Paired with Acetyl-L-Tyrosine (650 mg) as the amino acid foundation of LUCID. Pharmaceutical-grade, non-GMO, vegan. Not to be used by persons with phenylketonuria (PKU).
Overview of the 10 compounds · The Science
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L-Phenylalanine is one of the ten compounds in LUCID.
Ten actives, declared to the milligram. No proprietary blends.
SUBSCRIPTION
€80/ 4 weeks
€80/ 4 weeks
ONE-TIME PAYMENT
€100/ once
€100/ once
Free shipping · Ships on 30 October 2026