NOW Foods L-Tyrosine 500mg

120 capsules
NOW Foods L-Tyrosine 500mg

L-Tyrosine is a non-essential amino acid involved in the production of the neurotransmitters dopamine and norepinephrine. Thus, L-tyrosine stimulates the nervous system and benefits mood. L-Tyrosine is also necessary for proper thyroid functions by playing an important role in the production of epinephrine and thyroid hormone. This amino acid can also be helpful for healthy stress response.

Supplement Facts

Serving Size: 1 Capsule
Servings Per Container: 120


Amount Per Serving

% Daily Value


500 mg


† Daily Value not established.

Other Ingredients: Gelatin (capsule), magnesium stearate (vegetable source) and stearic acid (vegetable source).

Suggested Use

Take 1 capsule 1 to 3 times daily, preferably between meals.


For adults only. Consult Doctor if pregnant/nursing, taking medication or have a medical condition. Persons with thyroid disease (hyperthyroidism), melanoma, or those taking MAO inhibitors or other mood altering medications should seek the advice of a Doctor before consuming this product.


The body uses L-tyrosine to produce Dopamine and Norephinephrine, two important neurotransmitters (brain chemicals) responsible for controlling pain sensitivity, appetite, and natural stress response. Healthy L-tyrosine levels in the body may help achieve healthy pain tolerance and threshold. Figure conscious individuals may use L-tyrosine supplements for effective weight management. L-tyrosine capsules and pills may also be helpful to stabilise the body’s responses to stress from work and family responsibilities. It may also reduce the harmful effects of stress in the body. As it is plays key role in Dopamine and Norepinephrine production, L-tyrosine may be helpful in stimulating normal nervous system functions such as memory, concentration, and learning. Additionally, L-tyrosine supplements are suggested to help regulate mood. Effective mood regulation is beneficial in achieving mental and emotional health, especially for people with depression and anxiety. Mood support may also aid women to cope with mood swings during menopause. This non-essential amino acid is also involved in ensuring normal glandular functioning, specifically the thyroid and adrenal glands. L-tyrosine deficiency may lead to hypothyroidism, hypertension, and slow metabolism.

L-tyrosine or Tyrosine is one of amino acids naturally produced by the body, that’s why it’s classified as one of the non-essential amino acids. However, L-tyrosine is produced from the essential amino acid phenylalanine. Thus, L-tyrosine levels depend on adequate supply of phenylalanine from the diet and phenylalanine supplements. Phenylalanine rich foods include almonds, dairy products, banana, beans, and avocado. In the body, L-tyrosine is converted to the neurotransmitters dopamine and norepinephrine. These brain chemicals work by regulating the mood, controlling pain sensitivity, promoting appetite control, supporting memory and other cognitive functions. L-tyrosine can also be particularly helpful in maintaining healthy thyroid and adrenal functions. If the diet is poor in the amino acid phenylalanine, there may be a high risk of developing L-tyrosine deficiency. A condition called Phenylketonuria (PKU) also leaves a person vulnerable for low L-tyrosine levels since Phenylalanine is not properly converted to L-tyrosine. Shortage of L-tyrosine production can lead to chronic fatigue syndrome, depressed mood, anxiety, low libido, memory loss, and other hosts of mental health problems. In these cases, L-tyrosine supplements may be helpful for the body to get all its needed L-tyrosine benefits. When used together with 5-HTP supplements, L-tyrosine supplements may be more effective in providing mood support.