Ingredients

L-Tyrosine: Uses, Side Effects, Interactions, Dosage and Supplements

L-Tyrosine: Uses, Side Effects, Interactions, Dosage and Supplements

L-Tyrosine

L-Tyrosine is a non-essential amino acid that produces noradrenaline and dopamine which improves cognitive (brain) function. It is a precursor to L-Dopa, another common supplement.

Uses of L-Tyrosine

L-Tyrosine is a very common ingredient used in the supplement industry and for good reason. You’ll usually find it in pre-workouts, fat burners (both stim-based and stim-free) and nootropics. 

L-Tyrosine is most commonly used for nootropic purposes, although it has more uses. It has been shown to increase focus during stressful situations. So taking it may result in better workouts, and perhaps even better performance at work. There aren’t studies in terms of non-stressful situations however, so simply taking L-Tyrosine on its own will not boost brain power.

As for use in fat burners, L-Tyrosine plays a role in thyroid hormone production. Of course, simply taking a supplement is not going to magically make you lose weight. 

Interactions with L-Tyrosine

You’ll usually find tyrosine with nootropic ingredients such as Alpha-GPC and Huperzine A. Of course, you’re going to find it paired with caffeine as well. Since it works well for cognitive function, it may be a great addition to pre-workout supplements

You’ll also find it paired with ingredients such as Synephrine, Grains of Paradise, KSM-66, and Yohimbine. All commonly found in fat burning supplements.

Side Effects of L-Tyrosine

Some side effects of L-Tyrosine include nausea, headache, fatigue, and heartburn. It can be safely taken for extended periods of time.

Recommended L-Tyrosine Dosage

A typical dose is anywhere from 500mg-2,000mg (or 2 grams), and it should be taken 30-60 minutes pre-workout. Our preference for a minimum recommendation is 1,000mg (1g).

Recommended Supplements Featuring L-Tyrosine

The following products contain L-Tyrosine at the recommended dosage, and are recommended supplements for Fitness Informant:

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