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Dr Fitt





Product Description

L-Tyrosine 500 mg 60 caps

Depression is often the result of deficiencies of brain chemicals called "neurotransmitters". Neurotransmitters are involved in controlling your mood and also memory. Neurotransmitter imbalances can lead to mood disorders such as irritability, depression,manic/depression,and rage episodes. Symptoms can be as mild as just always seeing the "glass half empty".
Neurotransmitter deficiencies can be caused by a poor diet,hypothyroidism,adrenal insufficiency,or low hydrochloric acid production. Neurotransmitters are formed from building blocks from your food called "amino acids". Amino acids come from proteins. Diets low in protein can cause deficiencies in amino acids and subsequently neurotransmitters. Thyroid hormone is the energy hormone. Energy is required to break down proteins and assemble amino acids into neurotransmitters. Some neurotransmitters are produced in the adrenal glands. If adrenal glands are incompetent,this can affect neurotransmitter levels. Hydrochloric acid produced by the stomach is required to absorb amino acids. If hydrochloric acid is insufficient,this can lead to low amino acid levels and subsequent low levels of amino acids.
Anti depressant drugs work by keeping neurotransmitters from being broken down. These drugs can be useful used in the short-term if there is evidence of potential harm to self or others. However,most mood disorders are mild to moderate and don't require drugs. One of the many downsides of drugs is their potential to cause suicidal/homicidal thoughts. Most mass shootings have been associated with the use of prescription antidepressants. These drugs are also often associated in domestic homicides. They carry a "black box" warning,the most serious warning a drug can have.
A better alternative to addressing depression and other mood disorders is to correct the deficiencies. One amino deficiency that can lead to depression is L-tyrosine. L-tyrosine is a building block for the neurotransmitter norepinephrine. Norepinephrine elevates mood. It is often used in conjunction with L-tryptophan,the building block for serotonin. 
Prescription antidepressants should not be stopped "cold turkey". Work with a professional to wean off. A trial of 500-1000mg of L-tyrosine in the morning on an empty stomach may improve daytime energy and improve mood. Do not use in conjunction with other stimulants. Consult with your physician if you are taking prescription drugs. The books "The Mood Cure" by Julia Ross and "The Thyroid Solution by endocrinologist Ridha Arem MD give more detailed information about curing mood disorders.
  • A vegetarian dietary supplement to support mood balance, stress management and thyroid function.*

  • Used in:
    • Protein synthesis 
    • Epinephrine, norepinephrine and dopamine production (support mood)
    • Thyroid hormone synthesis (regulate metabolism)

  • Recommended to:
    • Support alertness*
    • Help cope with stress*
    • Support those with symptoms of PMS*
    • Support a balanced mood*
    • Improve sex drive*
    • Support relaxation*
    • Help suppress the appetite*

Conditionally Essential

  • The body can synthesize Tyrosine from the amino acid phenylalanine to meet the body’s demands, however there are conditions like Phenylketonuria that require a dietary source of L-Tyrosine to meet the body’s needs.


  • Tyrosine is used as a precursor to thyroid hormones tyroxine and triiodotyroonine, which support thyroid function.*


  • Tyrosine is a precursor of adrenaline and the neurotransmitters norepinephrine and dopamine, which regulate mood and stimulate the metabolism and nervous system.*
  • Decreased Tyrosine leads to decreased production of norepinephrine and dopamine which can lead to low mood states. Supplementing with L-Tyrosine can help support a balanced mood.*


  • Some scientists believe that the brain may not be able to synthesize tyrosine from phenylalanine under stressful conditions so epinephrine, norepinephrine and dopamine production may also be reduced, but supplementing with L-Tyrosine may help the body to better cope with stress.*


Supplement Facts
Serving Size: 1 Capsule
Amount Per Serving
L-Tyrosine 500 mg
Other ingredients: vegetable cellulose (capsule), microcrystalline cellulose, silicon dioxide, vegetable stearate.
Warning: If you are taking thyroid medication or have hyperthyroidism or Grave’s Disease, do not take this product.
Warning: If pregnant or nursing, consult your healthcare practitioner before taking this product.
Suggested Use: As a dietary supplement, take 1 capsule, 1 to 2 times daily between meals, or as directed by your healthcare practitioner.


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Disclaimer: While provides tools to educate and equip individuals with information to make informed decisions concerning their personal health, the articles and information provided on are not medical advice, diagnosis, treatment or care, and should not take the place of a one-on-one relationship with a qualified healthcare professional. The articles and tools are provided for informational purposes only and nothing on this website establishes a physician-patient relationship between you and any healthcare professional. If you are pregnant, nursing, taking medication, or have a medical condition, please consult with your healthcare professional before using any products on this site. 


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