Acetyl-L-Tyrosine
An acetylated amino acid, chosen for its aqueous solubility.
Acetyl-L-Tyrosine is the N-acetylated derivative of L-tyrosine, a non-essential aromatic amino acid biosynthesised from phenylalanine. The acetyl group grafted onto the alpha-amino position increases aqueous solubility relative to the free amino acid, an attribute documented across pharmaceutical literature since the 1970s. In LUCID, the active is produced by microbial fermentation of plant-derived carbohydrates, then chemically acetylated and purified to a minimum assay of 98 percent by HPLC. Residual solvents and heavy metals are quantified to European Pharmacopoeia limits. The molecular formula is C11H13NO4, molar mass 223.23 g/mol, and the compound presents as a white crystalline powder, odourless, freely soluble in water at ambient temperature. Each batch shipped to LIMINATE arrives with a Certificate of Analysis covering identity by FTIR, purity by HPLC, optical rotation, loss on drying, sulphated ash, and microbiological load.
We elected the acetylated form over free tyrosine for one reason: solubility. Free L-tyrosine crystallises rapidly in aqueous media, which complicates uniform capsule dispersion and, in academic dissolution work, has produced dose-response curves that are inconsistent between subjects. The N-acetyl variant remains in solution across the gastric pH range, delivering a more reproducible plasma trajectory (Van Spronsen et al., 1996, Metabolism). The 650 mg calibration reflects the mid-band of the range studied for cognitive-task work under load conditions in the literature (Deijen and Orlebeke, 1994, Brain Research Bulletin), scaled to a three-capsule morning ritual. We chose a milligram figure, not a percentage of daily intake, because the compound is a conditionally required nutrient whose intake varies with diet and metabolic demand. The dose is declared verbatim on the label. There is no rounding, no proprietary blend, no undisclosed excipient. The reader can verify.
The raw material is fermented and acetylated by a manufacturer registered under EU Regulation 1333/2008, operating a facility audited to ISO 9001 and to EU Good Manufacturing Practice. The starting substrate is non-GMO plant-derived glucose. Each incoming lot is retested at our third-party laboratory (Eurofins Antwerp) for identity, purity, and contaminant panel before release to encapsulation. Documentation is filed under batch codes traceable to the LUCID production run and preserved for ten years per EU food-supplement law.
Acetyl-L-Tyrosine sits first in the composition table as the mass-weight leader among the ten actives. It occupies the cognitive-foundations band, alongside Citicoline, L-Phenylalanine and Uridine Monophosphate.
