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L-Tyrosine Info And Products
Avoid Overtraining And Fatigue

What is it and where does it come from?

L-tyrosine is a nonessential organic amino acid that is a building block of protein. It is an organic amino acid due to the presence of a carbon atom in its makeup.

It is a precursor of the neurotransmitter dopamine, as well as a precursor to the adrenal hormones norepinephrine and epinephrine.1 The body can make L-tyrosine from the amino acid phenylalanine. L-tyrosine rich foods include animal meat, wheat products, oatmeal and seafood.

What does it do and what scientific studies give evidence to support this?

L-tyrosine may help athletes avoid overtraining, due to its ability to offset fatigue.2 Because L-tyrosine is a precursor of Dopamine, supplementing with L-tyrosine may heighten mental alertness, increase feelings of well being, and offset physical and mental fatigue.3,4

Who needs it and what are some symptoms of deficiency?

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Everyone. Populations in need of L-tyrosine include: athletes, people trying to lose weight, and the elderly. Hard training athletes may benefit from supplementing with L-tyrosine as it helps to offset fatigue and stress associated with intense training. L-tyrosine also serves to protect the integrity of the skin. Melanin, a substance which acts to protect the skin when the epidermis has been exposed to ultraviolet light, is derived from L-tyrosine. If a shortage of melanin is present within the body [because of a lack of L-tyrosine], skin defenses will be compromised. Melanin, which is derived from L-tyrosine, chemically reacts with sunlight to form a protective shield that protects the deeper layers of skin tissue.

People attempting to lose weight may benefit from supplemental L-tyrosine. The thyroid is responsible for the manufacture of T-cells. L-tyrosine influences the manufacture of thyroxin [T-cells], which influences basal metabolic rate. Because of this, L-tyrosine may prove effective for weight loss.

Learn more about the benefits of L-Tyrosine on Clayton South's Health Facts.

How much should be taken? Are there any side effects?

At this time clear dosing guidelines have not yet been established, so it is best to do what is known as "tolerance mapping".

Take a small dosage for one week, note the benefits and the side effects, and increase the dosage until the benefits are maximized and the side effects minimized. Over time the two will converge and you will hit the optimal dose. This process is similar to "receptor mapping" for bodybuilders who use insulin and steroids.

Many protein powders on the market are fortified with amino acids, including tyrosine. With this in mind, pay particular attention to how much tyrosine you are ingesting from all sources. No side effects have been reported, although as with any amino-acid, overdose is a possibility. Individuals suffering from psychiatric conditions should consult a qualified medical practitioner prior to the use of supplemental L-tyrosine.

If you do not feel comfortable following the above-described procedure, it is always best to follow the directions as prescribed on the products label.

Where can I get it?

There are many different brand names that manufacture supplemental L-Tyrosine. Below is a listing of all available brands that may be purchased here on Bodybuilding.com.

REFERENCES

View references here.

Republished from Clayton South's Health Facts.

SORT:
Name
Lowest Price
Top Sellers
Price Per...
Servings
Newest

Pure L-Tyrosine Products

Name - Link
Servings
Mg Per Serving
Price Per Gram
Lowest Price
NOW L-Tyrosine, 120 Capsules
120
500
$0.12
$7.49
[Order]
NOW L-Tyrosine 750, 750mg/90 Capsules
90
750
$0.13
$8.99
[Order]
NOW L-Tyrosine Powder, 113 Grams
282
400
$0.09
$9.99
[Order]
SciFit L-Tyrosine, 500mg/100 Capsules
100
500
$0.19
$9.49
[Order]

Other L-Tyrosine Products

Name - Link
Servings
Price
Per Serving
Lowest Price
4 Your Health BioBurn Extreme, 80 Capsules
40
$0.50
$19.99
[Order]
4Ever Fit L-Tyrosine, 500mg/90 Capsules
45
$0.20
$8.79
[Order]
4Ever Fit Lean Energy, 495 Grams - Buy One, Get One Free!
15
$1.73
$25.99
[Choose Flavor]
ALRI T-X, 90 Capsules
90
$0.33
$29.99
[Order]
ANSI Xtreme Shock, 12 Bottle Case
12
$2.41
$28.89
[Choose Flavor]
ASN Maxabol II, 100 Tablets
100
$0.40
$39.99
[Order]
AST NRG-X, 100 Capsules
50
$0.54
$26.89
[Order]
Athletic Edge Nutrition SteelEdge, 1 Lb.
20
$1.95
$38.99
[Choose Flavor]
ATX Boxing Recovery, 120 Tablets
40
$0.42
$16.89
[Order]
ATX Martial Arts Recovery, 120 Tablets
40
$0.42
$16.89
[Order]
Axis Labs Phire!, 120 Capsules
60
$0.30
$17.99
[Order]
Axis Labs Smash Pre-Workout, 495 Grams
30
$1.03
$30.99
[Choose Flavor]
Beast Sports Nutrition 2 Shredded, 120 Capsules
40
$0.84
$33.49
[Order]
Benfatto Nutrition Furnace, 240 Capsules
80
$0.30
$23.89
[Order]
Betancourt Nutrition Ripped Juice Extreme, 120cc
40
$0.62
$24.99
[Order]
BigNutrition PowerTrip, 90 Capsules
90
$0.17
$14.99
[Order]
BioQuest Fusion Force, 2.16 Lbs.
40
$1.00
$39.99
[Choose Flavor]
Biotest Spike Shooter, 24/8.4 Fl. Oz. Cans
24
$2.04
$48.99
[Order]
Biotest Spike Shooter, 4/8.4 Fl. Oz. Cans
4
$2.00
$7.99
[Order]
Black China Labs AM/PM 24/7 Weight Loss System, 2 Bottles
90
$0.38
$33.95
[Order]
Body Conditioning Solutions Phenyldrene, 120 Capsules
60
$0.50
$29.97
[Order]
BrainQuicken BodyQuick, 90 Capsules
45
$1.11
$49.95
[Order]
BrainQuicken BodyQuick, 90 Capsules - 2 Bottle Combo
90
$0.89
$79.92
[Order]
BSN NO-Xplode, 1.81 Lbs.
40
$0.97
$38.95
[Choose Flavor]
BSN Thermonex, 120 Capsules
40
$0.66
$26.50
[Order]
CMI NO3 Overload MM5T, 120 Super Tabs
30
$1.17
$34.99
[Order]
Controlled Labs Green MAGnitude, 1.83 Lbs.
80
$0.50
$39.99
[Choose Flavor]
Controlled Labs Green MAGnitude, 418 Grams
40
$0.65
$25.99
[Choose Flavor]
Controlled Labs Green MAGnitude, Free Sample!
1
$0.00
$0.00
[Choose Flavor]
Country Life 7-KetoTrim, 60 Capsules
60
$0.41
$24.89
[Order]
Country Life L-Tyrosine Caps, 500mg/100 Vegetarian Capsules
100
$0.10
$9.75
[Order]
D&E Maxadrine EFM, 120 Capsules
60
$0.32
$19.49
[Order]
Dymatize Amp'd, 120 Capsules
60
$0.38
$22.99
[Order]
Dymatize Dyma-Burn Xtreme, 100 Capsules
50
$0.34
$16.99
[Order]
Dymatize Liquid Amp'd, 4 Fl. Oz.
24
$0.79
$18.99
[Order]
Dymatize Liquid Amp'd, 8 Fl. Oz.
48
$0.60
$28.99
[Order]
EAS Catapult, 23 Oz.
25
$1.32
$32.89
[Choose Flavor]
Elite Delivery Technologies BodiLene RFC, 40 Servings
40
$0.79
$31.79
[Order]
Enzymatic Therapy NaturaLean With 7-Keto, 30 UltraCaps
30
$0.93
$27.99
[Order]
Epic Nutrition Intense NRG Concentrate, Box Of 12
12
$1.58
$18.99
[Choose Flavor]
EST ThermoStat, 90 + 90 Bi-Layer Tablets
180
$0.19
$34.95
[Order]
EST ThermoStat, 90 Bi-Layer Tablets
90
$0.33
$29.99
[Order]
Evolution Labs AdrenEVOL, 84 Capsules
42
$0.55
$22.89
[Order]
Fizogen Lean Tabs, 90 Tablets
30
$1.43
$42.99
[Order]
FSI Xenergy, 20 Packets
20
$0.80
$15.99
[Choose Flavor]
Garbage Garbage, 14 Packets
14
$1.41
$19.79
[Choose Flavor]
Garbage Garbage, 30 Packets
30
$1.00
$29.99
[Choose Flavor]
Garbage Nuclear Garbage, 14 Packets
14
$1.41
$19.79
[Choose Flavor]
Gaspari Nutrition Cytolean, 120 Extended Release Capsules
120
$0.23
$27.99
[Order]
Gaspari Nutrition SuperPump250, 800 Grams
40
$0.97
$38.99
[Choose Flavor]
German American Technologies Stenandiol 3.0, 30 Day Kit
30
$1.67
$49.95
[Order]
Goliath Labs Sleep Cycle, 1 Fl. Oz.
30
$0.64
$19.25
[Order]
Hammer Nutrition Endurolytes, 120 Capsules
120
$0.16
$18.95
[Order]
Hammer Nutrition Endurolytes Powder, 150 Servings
150
$0.13
$18.95
[Order]
Hard Nutrition Sizeagen, 750 Grams
30
$1.16
$34.89
[Choose Flavor]
I Force Thermoxyn, 90 Capsules
30
$0.97
$28.99
[Order]
Irwin Naturals System-Six, 130 Liquid Soft-Gels
22
$0.77
$16.98
[Order]
Irwin Naturals System-Six, 70 Liquid Soft-Gels
12
$0.91
$10.89
[Order]
Irwin Naturals System-Six Ripped Man, 130 Gel Caps
22
$0.77
$16.98
[Order]
Irwin Naturals Triple-Boost, 75 Gel Caps
12
$1.14
$13.69
[Order]
iSatori Energize, 84 Tablets
42
$0.55
$22.99
[Order]
iSatori Hardcore Energize Bullet, 12 Pack
12
$2.67
$31.99
[Choose Flavor]
iSatori MX-LS7, 120 Capsules
40
$0.87
$34.99
[Order]
ISS Research Satur8 Rush, 480 Grams - Temporary Special!
30
$0.83
$24.99
[Choose Flavor]
John Scott's Nitro Burn Extreme, 201 Capsules
67
$0.72
$47.99
[Order]
John Scott's Nitro Burn Extreme, 90 Capsules
30
$0.83
$24.79
[Order]
John Scott's Nitro Nitro Speed, 60 Capsules
60
$0.33
$19.99
[Order]
Kaizen NO Xtreme, 1.81 Lbs.
40
$0.92
$36.95
[Choose Flavor]
KAL Amino Acid Complex 1000, 100 Tablets
100
$0.09
$9.49
[Order]
Labrada Super Charge Packets, 12 Packets
50
$0.54
$26.99
[Choose Flavor]
LG Sciences Cold Fusion EX, 800 Grams - Buy One, Get One Free!
40
$0.92
$36.99
[Choose Flavor]
LG Sciences Speed, 90 Capsules
90
$0.41
$36.99
[Order]
Manno's Pro-Fitness Energ-Plus, 90 Capsules
30
$0.73
$21.99
[Order]
Manno's Pro-Fitness Energ-Plus Powder, 300 Grams
30
$0.63
$18.99
[Choose Flavor]
Met-Rx Amped ECN NOS, 2 Lbs.
45
$0.96
$42.99
[Choose Flavor]
Met-Rx Amplified Shooter, 24 Pack
24
$2.83
$67.99
[Choose Flavor]
Met-Rx Xtreme Amped Up Energy, 90 Softgels
90
$0.31
$27.50
[Order]
MHP Secretagogue Gold, 30 Packets
30
$1.80
$53.99
[Choose Flavor]
Michael's Thyroid Factors, 120 Veggie Capsules
40
$0.40
$15.99
[Order]
Millennium Sport Shred-XS, 60 Capsules
30
$0.86
$25.89
[Order]
MRM Driven, 1.1 Lbs.
40
$0.87
$34.89
[Choose Flavor]
MRM Driven Packets, 10 Packets
10
$1.89
$18.89
[Choose Flavor]
MRM Meta-Burn XTP, 90 Capsules
30
$0.80
$23.89
[Order]
MyoChem Throttle 1400X, 30 Capsules
30
$0.80
$23.98
[Order]
MyoChem Throttle Matrix - Special Price!, 60 Capsules
30
$1.33
$39.99
[Order]
Myogenix HyperShock, 780 Grams
40
$0.97
$38.98
[Choose Flavor]
Neogenix CryoShock, 468 Grams
36
$1.39
$49.99
[Choose Flavor]
Next Generation Labs Phentadrine, 60 Capsules
60
$0.67
$39.95
[Order]
Next Ultimate Orange, 1 Lb.
15
$2.33
$34.99
[Choose Flavor]
Next Ultimate Orange 2Go, 10 Packets
10
$1.15
$11.49
[Order]
NOW Thyroid Energy, 90 Vcaps
45
$0.22
$9.99
[Order]
NRG-X Labs Red Stinger, 90 Capsules
45
$0.58
$25.99
[Order]
NRG-X Labs Red Stinger Extreme, 90 Capsules
45
$0.78
$34.89
[Order]
Nutraceutics ZyMelt, 90 Capsules
90
$0.33
$29.99
[Order]
Nutrition53 Neuro1, 1.87 Lbs.
30
$2.66
$79.89
[Choose Flavor]
Olympian Labs Anxiety-X, 90 Capsules
45
$0.44
$19.99
[Order]
Olympian Labs Biogra, 90 Capsules
90
$0.22
$19.99
[Order]
Olympian Labs Siesta, 100 Vegetarian Capsules
20
$0.61
$12.25
[Order]
Omega Sports Cerebral, 150 Capsules
30
$0.70
$20.98
[Order]
Omega Sports Power Jolt, 120 Capsules
30
$0.62
$18.49
[Order]
Palo Alto Labs Leviathan Reloaded, 90 Capsules
45
$0.71
$31.99
[Order]
Performance Research R-724, 60 Capsules
30
$1.13
$33.99
[Order]
Pinnacle Fuse, 84 Capsules
21
$1.52
$31.95
[Order]
PrimaForce Rage, 120 Sci-Caps
40
$0.82
$32.99
[Order]
Pro Tan Slim Tan, 60 Caplets
30
$0.48
$14.49
[Order]
ProFight PittBull Lean Xtrim, 120 Capsules
40
$0.50
$19.99
[Order]
Prolab Metabolic Thyrolean, 120 Capsules - Buy One, Get One Free!
20
$0.95
$18.99
[Order]
Prolab Nitro Fire, 28.5 Oz.
45
$0.67
$29.99
[Choose Flavor]
Prolab Thermo Fire, 120 Capsules
60
$0.33
$19.99
[Order]
ProLine Technologies ThermoPro, 120 Softgels
60
$0.43
$25.99
[Order]
Recomp Performance Nutrition Atomic Meltdown, 8.5 Fl. Oz.
30
$1.00
$29.99
[Order]
Revolutionary Technology Nutrition Somatonin Extreme, 90 Capsules
90
$0.28
$24.99
[Order]
SciFit Endur-O2 + Kreation Combo, 2 Bottles (120 Capsules Each)
60
$0.41
$24.89
[Order]
SciFit Kreation, 120 Capsules
30
$0.66
$19.89
[Order]
SciFit Kreation, 240 Capsules
60
$0.58
$34.89
[Order]
SciFit Kreation Powder, 690 Grams
23
$1.73
$39.89
[Choose Flavor]
SciFit SuperNova, 908 Grams
45
$0.67
$29.99
[Choose Flavor]
SciFit Thermal Cuts EF, 150 Capsules
75
$0.31
$22.95
[Order]
SciFit Thermogen II EFX, 90 Softgels
22
$1.36
$29.95
[Order]
SciFit TriCuts III, 180 Capsules
90
$0.83
$74.89
[Order]
SciFit TriCuts III, 60 Capsules
30
$0.93
$27.97
[Order]
Scitec Thermo-Fx, 20 Packets
20
$1.19
$23.89
[Choose Flavor]
SciVation Dialene 4, 120 Sci-Caps
40
$0.70
$27.99
[Order]
Shocker Nutrition NitroShock, 780 Grams
50
$0.90
$44.99
[Choose Flavor]
Shocker Nutrition NitroShock Extreme, 1300 Grams
65
$0.83
$53.99
[Choose Flavor]
SNAC Vitalyze, 90 Capsules
30
$0.58
$17.49
[Order]
Spectra Force Research Thermophoric Diet Caps, 120 Capsules
120
$0.25
$29.99
[Order]
Sports One Mahuang RP, 100 Capsules
100
$0.28
$27.99
[Order]
TSN Labs Thin & Slim Naturally, 2 Bottles
60
$0.25
$15.25
[Order]
Twinlab Ripped Fuel Xtendr, 90 Tablets
45
$0.44
$19.99
[Order]
Ultimate Nutrition Stamina Power Caps, 90 Capsules
90
$0.15
$13.49
[Order]
VPX NO Shotgun, 810 Grams
30
$1.50
$44.89
[Choose Flavor]
VPX Redline Caps, 120 Gel Caps
40
$0.95
$37.95
[Order]
VPX Redline Power Rush, 24/2.5 Fl. Oz. Bottles
2
$24.00
$47.99
[Choose Flavor]
Vyo-Tech Nitrobolic Extreme, 772 Grams
40
$0.95
$37.99
[Choose Flavor]
Xyience Seven, 112 Capsules
56
$0.43
$23.99
[Order]

* These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.

 
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