Jarrow Formulas N-Acetyl Tyrosine helps brain function and mental alertness, providing a highly bioavailable acetylated form that helps keep focus under stress. Packed with the highly bioavailable N-acetyl-L-tyrosine, the formula also has a touch of vitamin B6 to bolster neurotransmitter production. Jarrow Formulas has earned a reputation for quality control and clean manufacturing. If you want sharper focus and steadier mood, this could be your go-to option.

Available Sizes & Variants:

120 capsules – Daily dose for steady support.

Benefits & Features:

• Helps support brain function and mental alertness, helping you stay focused during demanding days.
• Provides a highly bioavailable acetylated form of the amino acid tyrosine to support neurotransmitter production.
• Includes vitamin B6 to aid metabolic conversions linked to mood and cognitive performance.
• Delivers a proven nutrient pathway by converting N-acetyl-L-tyrosine to the neurotransmitters dopamine and norepinephrine, which can help with motivation, response to stress, and sustained attention.
• Supports steady focus.

Jarrow Formulas has a long standing commitment to quality, with batch testing for potency and contaminants to ensure purity in every bottle. N-acetyl-L-tyrosine is the star ingredient here, converted in the body to neurotransmitters that regulate mood and cognitive performance. The product is manufactured in facilities with strict quality controls to ensure consistency. Note this is different from n acetylcysteine, and some customers pair it with a vitamin d supplement or protein powder for muscle gain, to support a balanced daily routine.

Vitamin B6 (as pyridoxine HCl), N-Acetyl Tyrosine, Vitamin B6 (as pyridoxine HCl), N-Acetyl Tyrosine

• GTIN: 790011150510
• Manufacturer: Jarrow Formulas
• Categories: Jarrow FormulasL-TyrosineLung & Respiratory SupplementsN-Acetyl Cysteine (NAC)
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take 1 capsule 1 to 2 times daily, preferably on an empty stomach with juice or as directed by your healthcare professional. Store in a cool, dry place. Consult a doctor before use if you are pregnant, nursing, under 18 years of age, or have a medical condition (especially bipolar disorder, high blood pressure, a history of malignant melanoma, or if taking MAO inhibitors); discontinue use if unwanted reactions occur. Keep out of reach of children.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: N-acetyl-L-tyrosine

N-acetyl-L-tyrosine is basically an amino acid derivative that acts as a precursor to key neurotransmitters. This highly bioavailable acetylated form is converted in your body to L-tyrosine to support neurotransmitter synthesis.

This formula also includes vitamin B6 to aid in the metabolic conversions involved in neurotransmitter production.

What Does N-acetyl-L-tyrosine Do?

N-acetyl-L-tyrosine plays a role in supplying your body with the amino acid precursor to dopamine and norepinephrine, chemicals involved in motivation and stress response.

In scientific research led by Dr. Jongkees of Leiden University, tyrosine supplementation has been associated with maintaining cognitive performance under acute stress, including tasks requiring focus and working memory.

This supplement is not intended to diagnose, treat, cure, or prevent any disease.

Jarrow Formulas fits Welzo's partner criteria with a clear history of commitment to quality and purity and a solid emphasis on rigorous internal testing. This manufacturer is recognised for its strict quality control guidelines and batch testing to ensure potency and purity, which mirrors Welzo's own standards for supplier excellence.

Product quality in N-Acetyl Tyrosine is further supported by the brand's formulation approach, delivering a highly bioavailable acetylated tyrosine form and including vitamin B6 to aid metabolic conversions, reinforcing the product's fit for brain function support as described in the research into the product. The brand's emphasis on transparency and ongoing quality practices resonates with Welzo's evaluation philosophy, and this alignment was confirmed by our medical team as part of our standard assessment against our quality certification process.

We selected Jarrow Formulas due to their solid reputation for quality manufacturing and their specialised focus on well‑characterised amino acid derivatives, making them a reliable partner for this specific supplement. This brand sits well with Welzo's UK market approach and our expert vetting methodology, ensuring reliability for customers seeking clear, evidence‑based support.