What is L-Tyrosine?

L-Tyrosine is an amino acid that serves as a precursor to neurotransmitters including dopamine, norepinephrine, and epinephrine. These neurotransmitters are important for mood regulation, energy levels, and focus. L-Tyrosine has been shown to improve cognitive function and increase alertness during times of stress.

What are the benefits of L-Tyrosine?

The benefits of L-Tyrosine include improved mood, increased energy levels, improved cognitive function, and increased alertness. Additionally, L-Tyrosine has been shown to help the body cope with stress by reducing cortisol levels.

What are the side effects of L-Tyrosine?

L-Tyrosine is generally well tolerated with few reported side effects. The most common side effects include nausea, vomiting, headache, and dizziness.

Is L-Tyrosine safe?

Yes, L-Tyrosine is considered safe for most people when taken as directed. However, some people may experience side effects such as nausea, vomiting, headache, and dizziness. If you experience any adverse effects, stop taking L-Tyrosine and consult your doctor.

Dosage

The recommended dosage of L-Tyrosine is 500-2000mg per day.

Pharmacokinetics

After oral administration, L-tyrosine is rapidly absorbed from the gastrointestinal tract and reaches peak plasma concentrations within 1-2 hours. The bioavailability of L-tyrosine is variable, but is generally low (30-40%). L-tyrosine is widely distributed in the body and is metabolized by the liver. The half-life of L-tyrosine is 2.5 hours.

Research

Research suggests that L-tyrosine may improve cognitive function during times of stress. One study found that L-tyrosine improved mental performance in a group of Navy Seal trainees during an exhausting exercise program (1).

Another study looked at the effects of L-tyrosine on cognitive function in soldiers exposed to cold stress (2). The soldiers were given either L-tyrosine or a placebo prior to exposure to the cold stressor. The results showed that those who received L-tyrosine had improved performance on tests of working memory and attention, compared to those who received the placebo.

A third study investigated the effects of L-tyrosine on cognitive function in healthy adults exposed to acute stress (3). The participants were given either L-tyrosine or a placebo prior to being exposed to a stressful task. The results showed that those who received L-tyrosine had improved performance on tests of working memory and reaction time, compared to those who received the placebo.

These studies suggest that L-tyrosine may help to improve cognitive function during times of stress. However, more research is needed to confirm these findings.

How efficient is L-Tyrosine?

The efficiency of L-Tyrosine has been demonstrated in multiple studies. One study found that L-Tyrosine improved mental performance in a group of Navy Seal trainees during an exhausting exercise program . Another study looked at the effects of L-Tyrosine on cognitive function in soldiers exposed to cold stress and found that those who received L-Tyrosine had improved performance on tests of working memory and attention . A third study investigated the effects of L-Tyrosine on cognitive function in healthy adults exposed to acute stress and found that those who received L-Tyrosine had improved performance on tests of working memory and reaction time . These studies suggest that L-Tyrosine is an effective supplement for improving cognitive function during times of stress. However, more research is needed to confirm these findings.

Pregnancy and breast-feeding

There is no evidence to suggest that L-tyrosine is unsafe for use during pregnancy or breast-feeding. However, as with all supplements, it is best to consult with a healthcare provider before taking L-tyrosine if you are pregnant or breast-feeding.

Interactions

L-tyrosine may interact with certain medications. Therefore, it is important to consult with a healthcare provider before taking L-tyrosine if you are taking any medication.

Alternatives to L-tyrosine

There are a number of alternative supplements that may help to improve mood, energy levels, and cognitive function. Some of these include:

* omega-3 fatty acids

* B-complex vitamins

* magnesium

* Rhodiola rosea

Overdosage

There is no evidence to suggest that L-tyrosine is toxic. However, as with all supplements, it is best to consult with a healthcare provider before taking L-tyrosine if you are concerned about the possibility of an overdose.

How is it supplied?

L-Tyrosine is available in 500mg and 1000mg capsules.