L-Tyrosine

Tyrosine is a conditionally essential amino acid that can be formed from phenylalanine. The only time when outside sources such as meats, fish, eggs, nuts, beans, oats, and wheats may be required is if you lack sufficient amounts of phenylalanine in your system. Tyrosine is involved in the formation of thyroxine and melanin as well as in the synthesis of catecholamines, norepinephrine, epinephrine, and dopamine. Tyrosine, like other amino acids, must wait for a transport to cross the blood brain barrier and is classified as a large neutral amino acid (LNAA).

Tyrosine should not be combined with levodopa or thyroid hormone. When used with levopdopa, tyrosine decreases the effectiveness of the drug; when used with thyroid hormones, tyrosine might increase the additive effects and boost levels, as it is a precursor to the thyroid hormone.

Tyrosine is well tolerated by most people when taken in the recommended dosage. Some people may experience nausea, fatigue, headache, heartburn, and arthralgia.

View Research related to L-Tyrosine.

Products containing L-Tyrosine

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Adrenohs-Sod $20.59 BioGenesis Nutraceuticals
Adrenohs-Sod 60 VegiCaps
60 Servings
Adrenotone $24.50 Designs for Health
Adrenotone 90 VegiCaps
30 Servings
Adrenotone™ $40.90 Designs for Health
Adrenotone™ 180 VegiCaps
60 Servings
Almased Synergy Diet Multi Protein Powder 5.00 (4 reviews) 30% off retail $27.97 Almased
Almased Synergy Diet Multi Protein Powder 17.60 Ounces
10 Servings
Amino Athlete™ 1000 mg 52% off retail $6.65 Source Naturals
Amino Athlete™ 1000 mg 50 Tablets
50 Servings
Amino Blend $28.00 Progressive Laboratories
Amino Blend 90 Capsules
30 Servings
Amino Day 49% off retail $15.78 Source Naturals
Amino Day 120 Tablets
60 Servings
Amino Day™ 52% off retail $4.33 Source Naturals
Amino Day™ 30 Tablets
10 Servings
Amino Fuel 34% off retail $24.36 $1.00 Shipping Fee TwinLab
Amino Fuel 32 Ounces
Amino Fuel 1000 45% off retail $6.39 TwinLab
Amino Fuel 1000 60 Tablets
15 Servings
Amino Fuel 1000 9% off retail $21.04 TwinLab
Amino Fuel 1000 150 Tablets
37 Servings
Amino Fuel 1000 41% off retail $21.09 TwinLab
Amino Fuel 1000 250 Tablets
62.5 Servings
Amino Fuel 2000 12% off retail $37.38 TwinLab
Amino Fuel 2000 150 Tablets
37 Servings
Amino Gelcaps 30% off retail $21.09 Prolab Nutrition
Amino Gelcaps 200 Softgels
66 Servings
Amino L-Tyrosine $17.10 Genestra
Amino L-Tyrosine 60 VegiCaps
60 Servings
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