Tyrosine

v Tyrosine:

L-Tyrosine or Tyrosine or 4- hydroxyphenylalanine is a non-essential amino acid with polar side group. [C₉H₁₁NO₃]

· Our body produce it or makes it from Phenylalanine.

· Tyrosine helps to make some neurotransmitter and hormone:

[1] Dopamine: It is for pleasure, memory and motor skills.

[2] Adrenaline/ nor adrenaline: It is for fight and flight response.

[3] Thyroid: It is for regulating of metabolism.

[4] Melanin: It gives colour to skin, hair, and eyes.

· Tyrosine is precursor to neurotransmitter and improve cognitive and physical performance.

· Studies show that Tyrosine can help to maintain mental capacity when taken before a stressful activity. There is no evidence to improve memory.

· PKU is a serious condition that may cause of Tyrosine deficiency.

· Tyrosine can be converted into neurotransmitter that affect mood but no role in depression.

· Tyrosine is better than N-acetyl L-tyrosine [NALT].

· It is needed to synthesize COQ₁₀.

· Anti-stress effect dose is 45-68 mg/pound OR 100-150 mg/kg/day, its bioavailability is up to 8 hours and as a pre workout one can use it before 30 -60 min of workout as 1 gm. dose.

· Dietary sources:

Chicken, turkey, fish, milk, yogurt, cheese, peanuts, almonds, pumpkin and sesame seeds, soy products, avocados, banana, white eggs [ 250 mg/egg] and chicken, lean beef, lamb, pork about 1 gm./ 3 ounces [85 gm.] portion.

· Tyrosine reverse Neurotransmitted depletion process.