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SCORE
N-Acetyl Tyrosine (NALT)
Focus · Stress resilience
Tier 2 — Promising
What it is
An acetylated form of L-tyrosine marketed as more water-soluble and better absorbed. However, research suggests NALT may convert back to tyrosine less efficiently than the standard form. L-tyrosine (standard form) has stronger clinical evidence for focus and stress resilience. Very safe with no serious side effects at standard doses.
Efficacy
2/5
Safety
5/5
Research
2/5
Onset
4/5
Cost
3/5
Drug-int.
4/5
Dose
300–600 mg/day NALT; standard L-tyrosine (500–2,000 mg) is generally preferred for efficacy
Time of day & tips
Take on an empty stomach or with a small amount of food. Morning or before demanding tasks. Avoid combining with L-DOPA medications or MAOIs.
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