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L-Tryptophan



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L-Tryptophan

(120 Caps), Craig Nutraceuticals
L-Tryptophan (120 Caps) Craig Nutraceuticals


From $42.46 
38% Off
 $49.95 
27% Off


Craig Nutraceuticals L-Tryptophan (120 Caps) is a supplement to aid the body in relaxation and recovery. Craig Nutraceuticals

L-Tryptophan Powder

(2 oz.), NOW Foods
L-Tryptophan Powder (2 oz.) NOW Foods


From $19.99 
41% Off
 $23.52 
30% Off


Supports Relaxation Pharmaceutical Grade (USP) Encourages Positive Mood Promotes Restful Sleep* Vegetarian Product L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating mood and stress response. L-Tryptophan helps support relaxation, sleep, positive mood and immune function.* As an essential amino acid, it is not synthesized by the body and must be obtained fromt he diet. NOW L-Tryptophan is pharmaceutically pure - every lot is tested to be free of Peak E and microbial contamination. L-Tryptophan Powder

L-Tryptophan 500 mg

(120 Vcaps), NOW Foods
L-Tryptophan 500 mg (120 Vcaps) NOW Foods


From $23.53 
41% Off
 $27.68 
30% Off


L-Tryptophan helps support relaxation, sleep, positive mood and immune function. Promotes Restful Sleep

L-Tryptophan

(90 Maple cinnamon flavored chewable tablets), Lidtke
L-Tryptophan (90 Maple cinnamon flavored chewable tablets)* Lidtke


Less than $27.99 
Too low to show!
 $27.99 

Promotes relaxation, improves mood, promotes satifying sleep, reduces cravings for carbohydrates. Ultra-Premium quality, independently tested for purity,certified free of EBT, Hypoallergenic, gluten free. Buy

Amino Complete

(120 Caps), NOW Foods
Amino Complete (120 Caps) NOW Foods


From $8.23 
41% Off
 $9.68 
30% Off


Balanced Blend of Amino Acids NOW Amino Complete contains a balanced blend of the following essential and non-essential amino acids: L-Alanine, L-Arginine, L-Aspartic Acid, L-Cysteine, L-Glutamic Acid, L-Glycine, L-Histidine, L-Isoleucine, L-Leucine, L-Lysine, L-Methionine, L-Ornithine, L-Phenylalanine, L-Proline, L-Serine, L-Threonine, L-Tryptophan, L-Tryosine and L-Valine. Buy
Review
I have been trying to lower a 500 blood sugar level without medicine. I have been taking GlycoTrol with other supplements. After experimenting with many types of supplements I am now down to fasting 150 and during the day 120. I am atributing this in part to GlycoTrol. I also found I am sleeping through the night which I think is because there is L-Tryptophan in the formula.

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Lights Out

, Roex
Lights Out Roex


From $13.07 
34% Off
 $15.38 
23% Off


Roex Lights Out Sleep Formula contains pharmaceutical grade melatonin, vitamin B6, L-tryptophan, as well as traditional herbal relaxers like chamomile and passion flower. Benefits
Review
Source Naturals 5 HTP is one of the many sources I've tried. It was best tolerated at night a few hours after eating, but made me sick to my stomach if I took it before eating in the mornings. The biggest downside to the product is that it is in 50mg capsules instead of 100mg capsules. I have heard great things about Lidtke's l-Tryptophan as well, but have not tried it. I would definately use Source Natural's 5-HTP is available to me, but prefer LifeLink and Solaray's.
Review
I have been using Solary L-5-hydroxy Tryptophan for about six weeks. I do find that it is helpful. I am resting better and have more overall energy during the day. My husband and my 82 year old mother are also taking this supplement. It is best to take it at the same time each day and to take it with food. We have found that if it is not taken with food it could slightly upset your stomach. We will continue to use this product.

High Potency 5-HTP 200 mg

(60 Vcaps), NOW Foods
High Potency 5-HTP 200 mg (60 Vcaps) NOW Foods


From $19.99 
41% Off
 $23.52 
30% Off


High Potency Neurotransmitter Support Supports Positive Mood. With L-Tyrosine 5-HTP, the intermediate metabolite between the amino acid L-tryptophan and serotonin, is extracted from the bean of an African plant (Griffonia simplicifolia). Buy

Acetyl-L-Carnitine

(500 mg, 100 caps), Life Extension
Acetyl-L-Carnitine (500 mg, 100 caps)* Life Extension


Less than $25.50 
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 $25.50 
25% Off


Acetyl-l-carnitine is an amino acid shown to lower the increased oxidative stress often associated with aging. Diabetic Neuropathy

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5 HTP 50 mg

(120 Caps), Source Naturals
5 HTP 50 mg (120 Caps) Source Naturals


From $17.59 
49% Off
 $20.69 
40% Off


5-HTP (L-5-Hydroxytryptophan) is an intermediate in the natural conversion of the essential amino acid, tryptophan, to serotonin. Clinical studies have shown that 5-HTP increases the amount and availability of serotonin produced by the body. Mood Support

True-B6

, Pyridoxal 5-Phosphate (60 capsules), Lidtke
True-B6, Pyridoxal 5-Phosphate (60 capsules)* Lidtke


Less than $19.99 
Too low to show!
 $19.99 

The only form of Vitamin B6 your cells can actually use! Essential for the metabolism of all amino acids (especially L-Tryptophan). Helps lower homocysteine levels and control PMS symptoms. Important for Candida (yeast) patients. , Pyridoxal 5-Phosphate 60 capsules
MaxiVision | Advanced Nutritional Supplements for Healthy Vision | see Ocuvite
Maxivision Whole Body Formula. Maxivision Ocular Formula. Advanced vision support including Lutein 20mg, Zeaxanthin, CoQ10, Acetyl-L-Carnitine, Green Tea Extract and Resveratrol.
Review
L-arginine and l-irthinine combination helps one's growth and that's why i have chosen it. Hope thst,it will help me a lot...
Review
l arginine is best ever amino acid. i want to utilizi it ...

L-ArginineL-Ornithine

(100 Capsules), TwinLab
L-Arginine/L-Ornithine (100 Capsules) TwinLab


From $15.09 
42% Off
 $17.75 
32% Off


TWINLAB brings you products that are based on the latest science, and are manufactured to the highest level pharmaceutical standards. Vitamins, Minerals, Sports Nutrition Products, Special Formulas & Amino Acids. TWINLAB. Answers. For Life. TwinLab

L-Lysine and L-Proline

(120 capsules), Roex
L-Lysine and L-Proline (120 capsules) Roex


From $11.99 
31% Off
 $14.10 
19% Off


L-proline and L-lysine are essential for the manufacture of hormones, enzymes, cellular messaging and helps boost the immune system L-Lysine and L-Proline
Review
I have used Prostasol for several months, and this range of herbs have helped me to reduce the prostate cancer from 45 Ug/l to 8 Ug/l (Danish characters)

L-Tyrosine

(4 oz.), NOW Foods
L-Tyrosine (4 oz.) NOW Foods


From $11.97 
36% Off
 $14.08 
25% Off


Neurotransmitter Support Pharmaceutical Grade (USP) Supports Mental Alertness Healthy Glandular Function* L-Tyrosine is a non-essential amino acid that plays an important role in the production of neurotransmitters dopamine and norepinephrine. In addition, because L-Tyrosine is necessary for the synthesis of thyroid hormone and epinephrine (adrenaline), L-Tyrosine supports healthy glandular function and stress response.* Related Products NOW Foods

Kyo-Dophilus

(180 capsules), Kyolic

From $21.21 
35% Off
 $24.95 
24% Off


This Friendly Trio gives you relief from the inconvenience caused by bad bacteria. Benefits

Kyo-Dophilus Tablets

(60 tabs), Kyolic

From $11.01 
33% Off
 $12.95 
21% Off


Kyo-Dophilus Vegetarian contains specially cultured, non-dairy, heat-stable, stomach acid resistant, human strain of L. gasseri (formerly called L. acidophilus) bacteria. Kyo-Dophilus Tablets

L-Arginine 500mg

(100 tabs), Seacoast Vitamins

From $8.42 
14% Off
 $9.90 

Seacoast Natural Foods L-Arginine is a supplement designed to speed recovery as with burns, injuries, and other wounds. Cold & Flu

L-Glutamine 500mg

(100 tabs), Seacoast Vitamins

From $8.97 
24% Off
 $10.55 
11% Off


Seacoast Natural Foods L-Glutamine contains 500 mg of the amino acid L-Glutamine. Benefits

L-Carnitine 500mg

(60 caps), Seacoast Vitamins

From $13.76 
25% Off
 $16.19 
12% Off


A Dietary Supplement An Amino Acid L-Carnitine 500mg 60 Capsules Lowering Cholesterol

L-Citrulline 500mg

(120 Caps), Source Naturals

From $15.28 
49% Off
 $17.98 
40% Off


L-Citrulline is a crystalline free-form amino acid that encourages healthy blood flow Circulatory Health

Acetyl L-Carnitine

(60 Vcaps), Nature's Way

From $15.26 
41% Off
 $17.95 
30% Off


Acetyl L-Carnitine is an amino acid which supports healthy mental function such as concentration and focus. Buy

L-Lysine

500mg 250 tabs, Source Naturals

From $8.14 
49% Off
 $9.58 
40% Off


L-Lysine bu Source Naturals is an essential amino acid that supports healthy metabolism, healthy connective tissues, and calcium absorbtion. It helps lower choletserol and improves overall health. osteoporosis

L-Glutamine 500

(500 grams), Metabolic Response Modifiers

From $35.31 
41% Off
 $41.54 
30% Off


MRM L-Glutamine helps feed the body with amino acids that your brain uses for fuel, your muscles use for recovery, and studies suggest could increase HGH levels significantly. Hyperglycemia

L-Glutamine 1000

(1 kilo), Metabolic Response Modifiers

From $52.96 
41% Off
 $62.31 
30% Off


L-Glutamine from MRM is a great way to reduce the stress on your body from workouts or just everyday wear and tear on your muscles, brain and digestion. Hyperglycemia

L-Carnitine

(500mg -60 Vtab), Metabolic Response Modifiers

From $15.68 
50% Off
 $18.45 
42% Off


L-Carnitine, an amino acid for your body, aids in energy production, cardiovascular health and weight management. Buy

L-Glutamine Powder

(100 gm), Source Naturals

From $7.14 
48% Off
 $8.40 
39% Off


L-Glutamine is a free-form amino acid that can be converted to glutamic acid. Glutamic acid is a precursor to the important inhibitory neurotransmitter GABA (gamma-aminobutyric acid). L-Glutamine also plays an important role in ammonia disposal. 100 gm

L-Arginine L-Citrulline Complex

(1,000 mg-240 tabs), Source Naturals

From $27.52 
49% Off
 $32.38 
40% Off


L-Arginine and L-citrulline are two amino acids bundled into a single powerful supplement. L-Arginine is an important factor in muscle metabolism and is a precursor for nitric oxide, which promotes increased circulation by relaxing blood vessels. L-Citrulline helps the body rid itself of ammonia, a by-product of exercise. This clearing enables the body to recover after a workout. 1,000 mg-240 tabs

L-Arginine L-Citrulline Complex

(1,000 mg-120 tabs), Source Naturals

From $14.26 
49% Off
 $16.78 
40% Off


L-Arginine and L-citrulline are two amino acids bundled into a single powerful supplement. L-Arginine is an important factor in muscle metabolism and is a precursor for nitric oxide, which promotes increased circulation by relaxing blood vessels. L-Citrulline helps the body rid itself of ammonia, a by-product of exercise. This clearing enables the body to recover after a workout. Source Naturals

Mega L-Carnitine

(60 tablets), TwinLab

From $24.61 
42% Off
 $28.95 
32% Off


TWINLAB brings you products that are based on the latest science, and are manufactured to the highest level pharmaceutical standards. Vitamins, Minerals, Sports Nutrition Products, Special Formulas & Amino Acids. TWINLAB. Answers. For Life. Mega L-Carnitine

Mega L-Carnitine

(90 tablets), TwinLab

From $34.38 
43% Off
 $40.45 
33% Off


TWINLAB brings you products that are based on the latest science, and are manufactured to the highest level pharmaceutical standards. Benefits

L-Glutamine Powder

(35.3 oz), NOW Foods

From $45.31 
35% Off
 $53.31 
23% Off


100% Pure - Free Form Highest Grade Available Supports Muscle Mass* Vegetarian Product Glutamine has recently been the focus of much scientific interest. A growing body of evidence suggests that during certain stressful times, the body may require more glutamine than it can produce. Under these circumstances glutamine may be considered a "conditionally essential" amino acid. Glutamine is involved in maintaining a positive nitrogen balance (an anabolic state) and also aids rapidly growing cells (immune system lymphocytes and intestinal cell enterocytes). In addition, glutamine isa regulator of acid-base balance and a nitrogen transporter.* NOW L-Glutamine Powder is a 100% pure, free-form, non-essential, amino acid and is the highest grade available. L-Glutamine, A Versatile Amino Acid Product FAQ's Related Products NOW Foods

L-Lysine Powder

(1 lb.), NOW Foods

From $12.94 
41% Off
 $15.22 
30% Off


L-Lysine is an essential amino acid, which means your body cannot manufacture it. It must be obtained through the diet or by supplementation. Lysine is one of the most well known amino acids and is an essential component of all proteins. L-Lysine Powder

L-Lysine 500mg

(100 caps), NutriCology

From $8.18 
44% Off
 $9.62 
34% Off


Hypoallergenic Free Form Amino Acid Hypoallergenic

Best 5-HTP Enhanced with Vitamins B6 and C

(120 capsules), Doctor's Best

From $18.83 
52% Off
 $22.15 
44% Off


A naturally-occurring metabolite of the amino acid tryptophan, 5-HTP is converted in the brain to serotonin, a neurotransmitter substance found at the junctions (synapses) between neurons.* 120 capsules

Suntheanine L-Theanine

(150mg - 90 capsules), Doctor's Best

From $13.73 
50% Off
 $16.15 
42% Off


Suntheanine L-theanine is best known for its unique ability to increase relaxation without causing drowsiness. Buy

L-Optizinc

(100 Caps 30 mg), NOW Foods

From $4.69 
41% Off
 $5.52 
30% Off


Research has demonstrated this product to be better absorbed and retained longer compared to several other forms of zinc tested. Buy

L-Glutamine

(500 mg 100 capsules), Life Extension

Less than $11.22 
Too low to show!
 $11.22 
24% Off


L-Glutamine is a free form amino acid which may aid in muscle recovery. L-Glutamine

Acetyl L-Carnitine

(500 mg 120 capsules), Jarrow Formulas

From $25.88 
33% Off
 $30.45 
21% Off


One of the amino acids found in high concentration in human brain, nerve, liver and sperm cells, Acetyl-L-Carnitine is a more bioavailable form of L-Carnitine. Benefits

Acetyl L-Carnitine

(500 mg 60 capsules), Jarrow Formulas

From $15.26 
33% Off
 $17.95 
21% Off


One of the amino acids found in high concentration in human brain, nerve, liver and sperm cells, Acetyl-L-Carnitine is a more bioavailable form of L-Carnitine. Jarrow Formulas

L-Arginine

(1000 mg 100 tablets), Jarrow Formulas

From $12.28 
31% Off
 $14.45 
19% Off


L-Arginine is an amino acid that plays an important role in several important pathways, including the synthesis of proteins Buy

L-Carnosine

(500 mg 90 capsules), Jarrow Formulas

From $35.23 
33% Off
 $41.45 
21% Off


L-Carnosine supports healthy aging and cellular rejuvenation by its effects on two mechanisms: Glycation and Free Radical Damage. 500 mg 90 capsules

L-Arginine

(1600 mg 3.53 oz), Source Naturals

From $8.14 
49% Off
 $9.58 
40% Off


L-Arginine is a crystalline free-form amino acid. It is an important factor in muscle metabolism and works to transport store and excrete nitrogen. It is a precursor for nitric oxide which promotes increased circulation by relaxing blood vessels. Benefits

L-Arginine 500 mg

(100 Caps), NOW Foods

From $7.06 
41% Off
 $8.31 
30% Off


Amino Acid Conditionally Essential Amino Acid Pharmaceutical Grade (USP) L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as DNA synthesis. L-Arginine 500 mg

L-Arginine 500 mg

(250 Caps), NOW Foods

From $14.13 
41% Off
 $16.62 
30% Off


Amino Acid Conditionally Essential Amino Acid Pharmaceutical Grade (USP) L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion, as well as DNA synthesis. NOW Foods

L-Arginine 1000 mg

(120 Tabs), NOW Foods

From $16.47 
41% Off
 $19.38 
30% Off


Double Strength Amino Acid Conditionally Essential Amino Acid Pharmaceutical Grade (USP) Vegetarian Formula L-Arginine is a conditionally essential basic amino acid involved primarily in urea metabolism and excretion as well as DNA synthesis. 120 Tabs

L-Arginine

(1000 mg-100 tabs), Source Naturals

From $10.69 
49% Off
 $12.58 
40% Off


L-Arginine is a crystalline, free-form amino acid. It is an important factor in muscle metabolism and works to transport, store, and excrete nitrogen. It is a precursor for nitric oxide, which promotes increased circulation by relaxing blood vessels. Source Naturals

L-Glutamine

(500 mg-100 tabs), Source Naturals

From $6.63 
48% Off
 $7.80 
39% Off


L-Glutamine, a free-form amino acid, can be converted to glutamic acid. Glutamic acid is a precursor to the important inhibitory neurotransmitter GABA (gamma-aminobutyric acid). L-Glutamine also plays an important role in ammonia disposal. Benefits

L-Leucine

(500 mg-240 caps), Source Naturals

From $18.85 
49% Off
 $22.18 
40% Off


L-Leucine is an essential amino acid, specifically classified as a "branched-chain amino acid" (BCAA). BCAAs, especially leucine, stimulate muscle protein synthesis and may be the major fuel involved in anabolic reactions. This makes them especially important for body builders and other athletes in sports that demand explosive strength. Benefits

L-Lysine

(1,000 mg-100 tabs), Source Naturals

From $5.59 
49% Off
 $6.58 
40% Off


L-Lysine is an essential free-form amino acid which acts as a precursor for several other amino acids, including L-carnitine (needed for fat metabolism). L-Lysine is crucial to the formation of collagen, a major part of the body's connective tissues. L-Lysine also contributes to energy production when converted to acetyl coenzyme A, one of the principal fuels for the Krebs Cycle. Source Naturals

L-Phenylalanine

(500 mg-50 tabs), Source Naturals

From $3.44 
49% Off
 $4.05 
40% Off


L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine, and to a whole series of neurotransmitters and hormones. Phenylalanine is first converted to tyrosine, which becomes L-dopa, which converts to norepinephrine, a key neurotransmitter and an adrenal hormone. L-Phenylalanine is also a direct precursor of PEA (Phenylethylamine), another important neurotransmitter. 500 mg-50 tabs

L-Phenylalanine

(500 mg-100 tabs), Source Naturals

From $6.10 
49% Off
 $7.18 
40% Off


L-Phenylalanine, an essential amino acid, is a precursor of the amino acid tyrosine, and to a whole series of neurotransmitters and hormones. Phenylalanine is first converted to tyrosine, which becomes L-dopa, which converts to norepinephrine, a key neurotransmitter and an adrenal hormone. L-Phenylalanine is also a direct precursor of PEA (Phenylethylamine), another important neurotransmitter. L-Phenylalanine

L-Cysteine

(500 mg 60 capsules), TwinLab

From $11.86 
43% Off
 $13.95 
33% Off


TWINLAB brings you products that are based on the latest science, and are manufactured to the highest level pharmaceutical standards. Vitamins, Minerals, Sports Nutrition Products, Special Formulas & Amino Acids. TWINLAB. Answers. For Life. TwinLab

L-Glutathione

(100 mg 60 capsules), TwinLab

From $13.56 
42% Off
 $15.95 
32% Off


TWINLAB brings you products that are based on the latest science, and are manufactured to the highest level pharmaceutical standards. Vitamins, Minerals, Sports Nutrition Products, Special Formulas & Amino Acids. TWINLAB. Answers. For Life. TwinLab

L-Arginine

(500 mg 100 capsules), TwinLab

From $9.14 
42% Off
 $10.75 
32% Off


TWINLAB brings you products that are based on the latest science, and are manufactured to the highest level pharmaceutical standards. Vitamins, Minerals, Sports Nutrition Products, Special Formulas & Amino Acids. TWINLAB. Answers. For Life. Benefits

L-Methionine

(500 mg 30 capsules), TwinLab

From $6.33 
42% Off
 $7.45 
32% Off


TWINLAB brings you products that are based on the latest science, and are manufactured to the highest level pharmaceutical standards. Vitamins, Minerals, Sports Nutrition Products, Special Formulas & Amino Acids. TWINLAB. Answers. For Life. L-Methionine

L-Carnitine Liquid 3000 mg

(16 oz.), NOW Foods

From $23.53 
41% Off
 $27.68 
30% Off


Triple Strength Highest ;Grade ;Available Citrus Flavor Vegetarian Formula NOW L-Carnitine Liquid provides all of the extensive benefits of Carnitine in a highly absorbable liquid form. ; L-Carnitine is a non-essential amino acid that helps to maintain overall good health by facilitating the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production.* ; It naturally occurs in red meat and other animal-source foods, but we recommend supplementation to obtain optimal levels of this excellent amino acid. ; NOW L-Carnitine is vegetarian (non-animal sourced) and the highest grade available. Benefits

L-Carnitine 1000 mg Liquid

(32 oz.), NOW Foods

From $23.50 
41% Off
 $27.65 
30% Off


Highest Grade Available Citrus Flavor Vegetarian Formula NOW L-Carnitine Liquid provides all of the extensive benefits of Carnitine in a highly absorbable liquid form. ; L-Carnitine is a non-essential amino acid that helps to maintain overall good health by facilitating the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production.* ; It naturally occurs in red meat and other animal-source foods, but we recommend supplementation to obtain optimal levels of this excellent amino acid. ; NOW L-Carnitine is vegetarian (non-animal sourced) and the highest grade available. NOW Foods

L-Carnitine 500 mg

(60 VCaps), NOW Foods

From $15.28 
41% Off
 $17.98 
30% Off


L-Carnitine is a non-essential amino acid that helps to maintain overall good health by facilitating the transfer of fatty acid groups into the mitochondrial membrane for cellular energy production. Buy
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