N-acetyl L-tyrosine
N-acetyl L-tyrosine is L-tyrosine with an acetyl group on its amino nitrogen. It is made by acetylating L-tyrosine, usually with acetic anhydride, then purifying and crystallizing the product. It is far more water-soluble than L-tyrosine, so brands buy it as a white powder for drink mixes and liquid formats as well as capsules.
Suppliers sell different products under the same name. Specify the one you need.
Standard NALT powder for capsules, drink mixes and liquids.
Milled grades for capsule filling and fast dissolution.
NALT made from fermentation-derived L-tyrosine, for buyers who need a vegan source statement.
Compare each result with your own specification when the lot arrives.
Store N-acetyl L-tyrosine in tightly closed, lined containers in a cool, dry place away from light and strong odors, and reseal opened packs promptly. Shelf life or retest date is set by the supplier's specification; assay, loss on drying and micro are the usual retest points for older stock.
Record assay and free L-tyrosine for each lot, and calculate any tyrosine-equivalent label amounts from the measured assay. Rotate stock FEFO.
Facts from regulators and standards bodies, each linked to its source.
Health Canada's L-Tyrosine natural health product monograph lists N-acetyl-L-tyrosine as a source ingredient for L-tyrosine.
Source: webprod.hc-sc.gc.ca (opens in a new tab)Health Canada's Workout Supplements monograph also lists N-acetyl-L-tyrosine as a source ingredient for L-tyrosine.
Source: webprod.hc-sc.gc.ca (opens in a new tab)This is general information, not regulatory advice. Status differs by country and by how the ingredient is used, so check the rules for your product and market.
Manufacturers and distributors whose own websites say they sell it.
Manufacturer · Raleigh, NC
North American subsidiary of the Ajinomoto Group. It supplies pharmaceutical- and food-grade amino acids made by fermentation, in pack sizes from R&D pails to bulk, plus custom amino acid blends.
Suppliers are in alphabetical order and none pays to appear. Each claim is checked against the supplier’s own website on the date shown. Ask for the specification sheet and a recent COA before you order, and confirm details with the supplier.
Common forms include crystalline powder, fine powder and grades by tyrosine source. Ask each supplier for the specification sheet of the exact grade they quote.
Expect identity, assay, related substances, loss on drying and residue on ignition, heavy metals and microbiology and residual solvents, each with its method, specification and result for that lot.
Store N-acetyl L-tyrosine in tightly closed, lined containers in a cool, dry place away from light and strong odors, and reseal opened packs promptly. Shelf life or retest date is set by the supplier's specification; assay, loss on drying and micro are the usual retest points for older stock.
Health Canada's L-Tyrosine natural health product monograph lists N-acetyl-L-tyrosine as a source ingredient for L-tyrosine. Health Canada's Workout Supplements monograph also lists N-acetyl-L-tyrosine as a source ingredient for L-tyrosine.
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