Usage and benefits 

L-Tyrosine (CAS# 60-18-4) is a type of amino acid and dietary supplement that is growing in use. L-Tyrosine is a precursor of catecholamines and influences the synthesis of dopamine and adrenaline.

Manufacturers use this dietary supplement in Nootropic products that improve alertness, attention and focus. L-tyrosine has also been reported to have positive effects in preventing a decline in cognitive function in response to physical stress. It supports performance during extended periods of high stress activity and sleep deprivation.

L-Tyrosine also formulated in fat burners or weight loss supplements as production of thyroid hormones is also influenced by this amino acid.

L-Tyrosine is used in dietary supplements e.g:
• Nootropics
• Weight loss or fat burners
• Stress relief products

There is another form of L-Tyrosine called N-Acetyl-L-Tyrosine (CAS# 537-55-3) which is more soluble and appears to be relatively heat stable.


The recommended dosage of l-Tyrosine is 500-2000mg approximately 30-60 minutes before any acute stressor e.g. exercise.
For nootropics, the doses can range from 45-68 mg per pound (100–150 mg per kg) of body weight. For example, a dosage of 7-10 grams are recommended for a person weighing 150 pounds or 68 kgs.

We at A&A Pharmachem offer pure grades of L-Tyrosine (CAS# 60-18-4) and N-Acetyl-L-Tyrosine (CAS# 537-55-3) in bulk to contract manufacturers and brand owners.

Please contact us now for a quote!

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