N-Acetyl-L-Tyrosine
Also known as: NALT, N-acetyl tyrosine, acetyl-L-tyrosine
An acetylated form of tyrosine marketed for better water solubility than plain L-tyrosine, which makes it convenient in ready-to-drink and powder formulas. Human data show that a large share of an oral or intravenous NALT dose is excreted unchanged rather than converted to free tyrosine, so it is a less reliable way to raise plasma tyrosine than the same weight of L-tyrosine. It remains common in pre-workouts and focus blends at sub-gram doses.
Research summary
Intended as a tyrosine prodrug for catecholamine synthesis; conversion to free tyrosine in humans is incomplete.
Dosage
Daily amounts, of compound.
| Lowest studied | Typical range | Highest studied | Upper limit |
|---|---|---|---|
| — | 350–1,000 mg | — | — |
Products commonly use 350–1,000 mg per serving. There is no human study establishing an effective oral NALT dose for cognition; the evidence for tyrosine's stress benefits comes from plain L-tyrosine at much higher doses. Consider L-tyrosine where dose efficiency matters and reserve NALT for solubility-limited liquids.
Source material: synthetic (acetylated L-tyrosine)
Forms of Tyrosine
| Form | Typical dose | Element % | Formats | Price |
|---|---|---|---|---|
| N-Acetyl-L-Tyrosine | 350–1,000 mg | — | Capsule, Powder, Tablet, Liquid | mid |
| L-Tyrosine | 500–2,000 mg | — | Capsule, Powder, Tablet | low |
Format suitability
- Capsule
- Powder
- Tablet
- Softgel
- Gummy
- Liquid
Much more water-soluble than L-tyrosine; suitable for liquids and clear powders.
Formulation notes
Stacked with caffeine and theanine in focus products. Do not assume mg-for-mg equivalence with L-tyrosine.
Sources
Related ingredients
L-Theanine
Amino acidAn amino acid found naturally in green tea that promotes a calm, focused state without sedation.
Typical: 100–200 mg
L-Tyrosine
Amino acidA conditionally essential amino acid that serves as the direct precursor to dopamine, norepinephrine, and epinephrine.
Typical: 500–2,000 mg
Rhodiola Rosea Extract
BotanicalA root extract from an arctic and alpine plant, standardized to rosavins and salidroside, that is used in energy, focus, and stress formulas.
Typical: 200–600 mg
Ashwagandha Leaf & Root Extract (Sensoril)
BotanicalA branded water-extracted ashwagandha made from both leaf and root and standardized to a minimum of 10% withanolide glycosides, which lets it work at a smaller dose than root-only extracts.
Typical: 125–250 mg
Magnesium L-Threonate
MineralA magnesium salt of L-threonic acid, a vitamin C metabolite, developed at MIT as a form that raises brain magnesium in animal models.
Typical: 100–144 mg