L-Tyrosine is an amino acid that produces neurotransmitters, potentially enhancing mental performance during stress.
L-Tyrosine is a non-essential amino acid and precursor to neurotransmitters such as dopamine, norepinephrine, and epinephrine. Supplementation may offer cognitive benefits, particularly under stress, and potentially improve mood and alertness. Common dosages range from 500-2000mg daily, divided into multiple doses. Potential side effects include nausea, headache, and heartburn. It's crucial to be aware of interactions with MAO inhibitors, thyroid medications, and levodopa, and to exercise caution in individuals with hyperthyroidism. The evidence supporting its benefits is primarily moderate, with further research needed to solidify its efficacy in various applications.
Key Information
Inside Body Harmful Score
Common Dosage
500-2000mg daily, divided into multiple doses
Source Type
natural
Production Process
L-Tyrosine is naturally derived from protein sources. Industrially, it can be produced through microbial fermentation or enzymatic conversion of L-Phenylalanine.
Use Type
Inside BodyPotential Benefits
Stress reduction decreases physiological and psychological responses to perceived threats, promoting calm and well-being. Strategies like mindfulness, exercise, and social support help modulate the nervous system and improve overall resilience.
Enhances cognitive function by improving focus, attention, and reaction time, reducing mental fatigue. Mechanisms may involve neurotransmitter optimization, increased cerebral blood flow, and neuroprotection.
Enhances cognitive performance, including attention, memory, and decision-making, under stress. This benefit mitigates the negative impact of stress on cognitive function, promoting optimal mental performance in demanding situations.
Cognitive enhancement improves mental performance by boosting memory, attention, and processing speed. It works by promoting neuronal health and protecting against cognitive decline.
Mood enhancement improves emotional well-being by reducing negative feelings and increasing positive ones. It aims to stabilize and elevate mood, fostering a positive outlook and improved emotional resilience.
Caffeine blocks adenosine receptors in the brain, leading to increased neuronal activity and reduced feelings of fatigue. This results in enhanced alertness and cognitive function.
L-Tyrosine may help regulate blood pressure, particularly in individuals with hypotension, by increasing the production of neurotransmitters like dopamine and norepinephrine. However, more research is needed to confirm this effect and understand its implications for individuals with normal or high blood pressure.
Possible Side Effects
Gastrointestinal upset involves a variety of digestive symptoms like nausea, diarrhea, and abdominal pain. It can range from mild discomfort to severe pain and may indicate an underlying condition if persistent.
Insomnia is a sleep disorder involving difficulty falling or staying asleep, leading to non-restorative sleep. It can be triggered by various factors and can result in daytime fatigue and impaired cognitive function.
Headache is pain in the head ranging from mild to severe, potentially with nausea, light/sound sensitivity, or dizziness. It can be caused by tension, dehydration, stress, or medication side effects, and persistent headaches require medical evaluation.
Nausea is an unpleasant sensation of stomach unease, often preceding vomiting, caused by various factors like medications or infections. Prolonged nausea can lead to complications like dehydration.
Increased heart rate (tachycardia) is a faster-than-normal heartbeat. Drug-induced tachycardia can lead to palpitations, shortness of breath, and, in severe cases, heart complications, especially in individuals with pre-existing heart conditions.
Heartburn is a burning pain in the chest caused by stomach acid reflux into the esophagus. It can be triggered by various factors, including diet, lifestyle, and certain medications.
Headaches are a common side effect characterized by pain in the head, ranging from mild to severe, potentially accompanied by nausea and sensitivity to light/sound. They can be triggered by various factors, including dehydration, stress, or medication.
Drug interactions can alter a drug's effectiveness, leading to either increased risk of blood clots or bleeding, particularly with anticoagulants. Monitoring is essential to manage these interactions.
Interaction with MAO inhibitors can cause a hypertensive crisis due to increased neurotransmitter levels, resulting in dangerously high blood pressure. This condition can lead to severe cardiovascular events and requires immediate medical attention.
Excess Tyrosine may overstimulate thyroid hormone production, potentially exacerbating or triggering hyperthyroidism. Symptoms include rapid heartbeat, anxiety, and weight loss.
Scientific Evidence
Relevant studies on L-Tyrosine and cognitive function under stress, mood regulation, and alertness. Research on potential interactions with medications like MAO inhibitors and thyroid hormones. Case reports on adverse effects in individuals with hyperthyroidism.
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