Acetyl-L-Tyrosine

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Other names for Acetyl-L-Tyrosine

NALT
Acetylated Tyrosine
Tyrosine (N-acetyl form)
Acetyl L-Tyrosine
Acetyl-L-Tyrosine
I-tyrosine
l-tyrosine
n-acetyl l-tyrosine
N-Acetyl Tyrosine
n-acetyl-l-tyrosine
Tyrosine
tyrosine
Tyrosine alpha ketoglutarate
Tyrosine alpha-ketoglutarate
Tyrosine alpha-ketoglutaric acid

Synopsis of Acetyl-L-Tyrosine

N-Acetyl-Tyrosine (NALT) is a modified form of the amino acid L-tyrosine, produced by attaching an acetyl group to enhance its stability and water solubility. Tyrosine is a non-essential amino acid synthesized in the body from phenylalanine and is a precursor to several critical neurotransmitters and hormones, including dopamine, norepinephrine, epinephrine, and thyroid hormones (T3 and T4).

As a supplement, N-acetyl-tyrosine is used to support mental alertness, stress resilience, focus, and cognitive performance, particularly during periods of acute stress, fatigue, or sleep deprivation. It is commonly included in nootropic formulations, pre-workout blends, and adaptogenic stacks due to its role in catecholamine production. The acetylation of tyrosine may improve its absorption and bioavailability compared to standard L-tyrosine, though scientific findings on this are mixed.

NALT is especially noted for its effects in situations where neurotransmitter depletion occurs due to stress, intense exercise, or cognitive overload. It helps restore the synthesis of dopamine and norepinephrine, improving mood, motivation, and executive function. It may also be beneficial in supporting thyroid function, particularly in individuals with subclinical hypothyroidism or under chronic stress, where tyrosine availability can influence thyroid hormone synthesis.

Additionally, some research suggests tyrosine supplementation (including NALT) can improve cognitive performance in demanding environments such as military operations or high-pressure professional settings. It does not act as a stimulant but provides foundational support for neurotransmitter production.

Historical Use
N-Acetyl-Tyrosine is a modern derivative of L-tyrosine and does not appear in the historical record of herbal or traditional medicine. However, its parent compound—tyrosine—was first discovered in 1846 in casein (a milk protein) and named after the Greek word for cheese, tyros. The biological significance of tyrosine became clearer with the development of biochemical and neurochemical research in the 20th century.

The use of tyrosine-rich foods for mental and physical resilience does have roots in traditional practices. High-protein foods such as meat, dairy, legumes, and seeds—natural sources of tyrosine—have long been recommended in traditional systems like Ayurveda and Traditional Chinese Medicine (TCM) to nourish the brain, improve strength, and stabilize mood. While they lacked the molecular understanding, ancient practitioners often recommended such foods during periods of convalescence, emotional stress, or mental fatigue.

The targeted use of N-acetyl-tyrosine as a supplement began in the late 20th century, particularly among biohackers, athletes, and those seeking enhanced cognitive function under pressure. Its inclusion in pre-workout and neuro-enhancement products has grown due to its ability to support neurotransmitter replenishment without directly overstimulating the central nervous system.

Today, NALT is recognized as a supportive nutrient for neurotransmitter synthesis, cognitive endurance, and stress recovery, especially in high-demand physical and mental environments.

Acetyl-L-Tyrosine is used for these health conditions

Athletic and Exercise Aids (Scientific)
Concentration (poor) (Scientific)
Depression (Scientific)
Energy (lack of) (Scientific)
Fatigue (Scientific)
Memory and Brain Function (Scientific)
Mood Swings (Scientific)
Stress (Scientific)
Thinking (cloudy) (Scientific)

Acetyl-L-Tyrosine is used to support these body systems

Adrenal Glands (Traditional)
Adrenal Medulla (Scientific)
Brain (Scientific)
Dopamine (Scientific)
Epinephrine (Scientific)
Nerves (Scientific)
Specific Neurotransmitters (Scientific)
Sympathetic Nervous System (Scientific)