Apparel & Jewelry 
Electronics 
Health & Beauty 
Kids & Baby 
Sports & Outdoors 
Home & Garden 
Books & Media
Shop by Brand
Home » All brands » Source Naturals »

Items 145 to 168 of 402 total
View as:
L-Carnosine  
L-Carnosine - Source Naturals
          L-Carnosine is a dipeptide composed of the amino acids beta-alanine and L-histidine. It occurs naturally in muscle, brain and other tissues in high concentrations. In in vitro studies, L-carnosine reduced glycation, a process in which DNA and protein are damaged by glucose. The end products of glycation are highly reactive molecules called advanced glycation end products (AGEs), which can further ... [Read More]
 
Suggested: $37.98
$19.74
Save 48%

L-Citrulline  
L-Citrulline - Source Naturals
          L-Citrulline is a natural amino acid that supports sports performance and good health, while at the same time helping the liver detoxify. L-Citrulline helps the body rid itself of ammonia, a by-product of intense exercise. This clearing enables the body to recover after a workout, and it frees ATP energy for enhanced uses such as respiration and signal transduction.
  Available Options
30 Tablet:   $7.53 Add to Cart
60 capsule:   $8.16 Add to Cart
60 tablet:   $14.06 Add to Cart
120 capsule:   $15.31 Add to Cart
100 gm:   $18.89 Add to Cart
120 tablet:   $27.06 Add to Cart
Save up to 49%
L-Glutamine  
L-Glutamine - Source Naturals
          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.
  Available Options
50 capsule:   $4.18 Add to Cart
50 tablet:   $4.18 Add to Cart
100 capsule:   $7.14 Add to Cart
100 gm:   $7.41 Add to Cart
100 tablet:   $7.14 Add to Cart
453.59 gm:   $28.60 Add to Cart
Save up to 47%
L-Leucine  
L-Leucine - Source Naturals
          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.
  Available Options
60 capsule:   $5.37 Add to Cart
120 capsule:   $10.15 Add to Cart
3.5 oz:   $15.14 Add to Cart
240 capsule:   $19.59 Add to Cart
Save up to 49%
L-Lysine  
L-Lysine - Source Naturals
          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.
  Available Options
50 tablet, 500 mg:   $3.40 Add to Cart
50 tablet, 1000 mg:   $3.60 Add to Cart
100 tablet, 500 mg:   $5.05 Add to Cart
100 capsule, 500 mg:   $5.05 Add to Cart
3.5 oz:   $5.05 Add to Cart
100 tablet, 1000 mg:   $6.12 Add to Cart
200 capsule, 500 mg:   $8.95 Add to Cart
250 tablet, 500 mg:   $10.77 Add to Cart
200 tablet, 1000 mg:   $13.03 Add to Cart
3 x 100 tablet, 1000 mg:   $18.37 Add to Cart
Save up to 53%
L-Methionine  
L-Methionine - Source Naturals
          L-Methionine is an essential sulfur-containing, free-form amino acid. It contributes to the synthesis of S-adenosyl-L-methionine (SAMe), which is neccessary for normal brain function, and L-cysteine, which is a component of glutathione, an important antioxidant molecule in the body. Methionine is also a transporter of the antioxidant mineral, selenium.
 
Suggested: $22.98
$9.44
Save 59%

L-Ornithine  
L-Ornithine - Source Naturals
          L-Ornithine, a free-form crystalline amino acid, is a precursor of arginine, which is necessary for the synthesis of creatine, an important energy provider for muscles. In addition, L-Ornithine is a key compound in the urea cycle, one of the body's main processes for eliminating ammonia.
  Available Options
50 capsule:   $6.77 Add to Cart
3.5 oz:   $12.52 Add to Cart
100 capsule:   $12.76 Add to Cart
Save up to 49%
L-Phenylalanine  
L-Phenylalanine - Source Naturals
          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.
  Available Options
50 tablet:   $4.08 Add to Cart
100 tablet:   $6.63 Add to Cart
3.5 oz:   $15.08 Add to Cart
Save up to 49%
L-Proline/L-Lysine  
L-Proline/L-Lysine - Source Naturals
          L-Lysine is one of the 9 essential amino acids that cannot be made in the body. It is the basic raw material for carnitine synthesis. L-Proline can be made in the body, but low protein/vegetarian diets may not always promote optimal L-proline production. L-Lysine and L-proline amino acids are the precursors of hydroxylysine (HL), and hydroxyproline (HP), two constituents of collagen. Collagen is a... [Read More]
 
Suggested: $21.98
$11.23
Save 49%

L-Proline Powder  
L-Proline Powder - Source Naturals
          L-Proline is an amino acid involved in the production of collagen and cartilage and may help support healthy joints and a healthy musculoskeletal system. L-Proline can be made in the body, but low protein/vegetarian diets may not always promote optimal production.
 
Suggested: $13.98
$7.14
Save 49%

L-Theanine  
L-Theanine - Source Naturals
          L-Theanine is a unique amino acid found almost exclusively in the tea plant (Camellia sinensis) and is the primary ingredient contributing to the unusual taste of green tea. Animal studies have shown that L-theanine crosses the blood brain barrier, increases dopamine and GABA levels in the brain, and inhibits the stimulatory properties of caffeine. Human studies have shown that taking L-theanine r... [Read More]
  Available Options
30 Tablet:   $7.20 Add to Cart
30 capsule:   $9.07 Add to Cart
60 tablet:   $15.59 Add to Cart
60 capsule:   $16.10 Add to Cart
120 capsule:   $26.14 Add to Cart
Save up to 57%
L-Tryptophan  
L-Tryptophan - Source Naturals
          The essential amino acid l-tryptophan helps support relaxation, restful sleep, and positive mood. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response and sleep/wake cycles. l-Tryptophan also supports immune functions because it is the body s precursor to the kynurenines that regulate immunity. If needed, l-tryptophan converts to ni... [Read More]
  Available Options
8 tablet:   $2.71 Add to Cart
30 capsule:   $6.51 Add to Cart
30 Tablet:   $6.28 Add to Cart
60 capsule:   $11.50 Add to Cart
60 tablet:   $10.38 Add to Cart
90 capsule:   $16.85 Add to Cart
120 capsule:   $16.75 Add to Cart
50 gram:   $16.34 Add to Cart
120 tablet:   $21.84 Add to Cart
100 gram:   $39.84 Add to Cart
Save up to 58%
L-Tryptophan with Coenzyme B-6  
L-Tryptophan with Coenzyme B-6 - Source Naturals
          The essential amino acid L-tryptophan helps support relaxation, restful sleep, and a positive outlook. It plays a part in the synthesis of both melatonin and serotonin, hormones involved with mood and stress response. This tryptophan includes the activated coenzyme form of vitamin B-6, called P-5-P, that is required to convert tryptophan to serotonin. L-Tryptophan also supports immune functions be... [Read More]
  Available Options
30 Tablet:   $6.99 Add to Cart
60 tablet:   $11.23 Add to Cart
120 tablet:   $20.58 Add to Cart
Save up to 47%
L-Tyrosine  
L-Tyrosine - Source Naturals
          L-Tyrosine is a free-form amino acid which rapidly crosses the blood-brain barrier. It is a precursor for the neurotransmitters dopamine, norepinephrine and epinephrine, for thyroid hormones, and for enkephalins, special peptides which subdue messages of physical discomfort. L-Tyrosine is also a precursor for the protective skin pigment melanin.
  Available Options
50 tablet:   $4.18 Add to Cart
100 tablet:   $6.90 Add to Cart
3.5 oz:   $10.72 Add to Cart
Save up to 49%
Lecithin  
Lecithin - Source Naturals
          Lecithin is a natural substance found in cell membranes and is manufactured in the liver from dietary choline. It contains a mixture of phosphatides, including phosphatidyl choline, an important precursor to the main neurotransmitter, acetylcholine. In addition, the body utilizes lecithin both for the proper formation of bile (the body's main emulsifying compound), and as an emulsifying agent itse... [Read More]
  Available Options
100 gelcap:   $4.96 Add to Cart
200 gelcap:   $8.95 Add to Cart
500 gelcap:   $20.70 Add to Cart
Save up to 38%
Life Force Multiple  
Life Force Multiple - Source Naturals
          Life Force Multiple, the most complete daily formula available, is scientifically Bio-Aligned to deliver essential cellular energy and balance to vital systems and organs. For lifelong support to your brain, skin, eyes, immune, circulatory, antioxidant and energy systems, take LIFE FORCE and join the Wellness Revolution of preventive health care.
 
Suggested: $66.50
$37.56
Save 44%

Life Force Multiple No Iron  
Life Force Multiple No Iron - Source Naturals
          Life Force Multiple, the most complete daily formula available, is scientifically Bio-Aligned to deliver essential cellular energy and balance to vital systems and organs. For lifelong support to your brain, skin, eyes, immune, circulatory, antioxidant and energy systems, take LIFE FORCE - and join the Wellness Revolution of preventive health care.
  Available Options
10 capsule:   $3.29 Add to Cart
30 Tablet:   $7.65 Add to Cart
60 capsule:   $8.58 Add to Cart
60 tablet:   $13.03 Add to Cart
120 capsule:   $16.10 Add to Cart
90 tablet:   $19.17 Add to Cart
180 capsule:   $20.78 Add to Cart
120 tablet:   $25.30 Add to Cart
180 tablet:   $37.56 Add to Cart
Save up to 52%
Liver Guard  
Liver Guard - Source Naturals
          This product has been specially formulated to provide nutrients essential for healthy liver function.
  Available Options
30 Tablet:   $8.82 Add to Cart
60 tablet:   $16.61 Add to Cart
120 tablet:   $32.96 Add to Cart
Save up to 49%
Lutein  
Lutein - Source Naturals
          Lutein is a potent antioxidant carotenoid found in abundance in fruits and green leafy vegetables. Lutein is also one of the dominant pigments found in the macular region of the retina in the eye. In the macula, lutein is selectively accumulated from plasma and filters out visible blue light. Recent studies suggest this filtering process serves to protect the retina from photic damage or other oxi... [Read More]
  Available Options
45 capsule:   $5.37 Add to Cart
30 capsule:   $8.95 Add to Cart
90 capsule:   $9.97 Add to Cart
60 capsule:   $17.12 Add to Cart
Save up to 47%
Lycopene  
Lycopene - Source Naturals
          Lycopene is a carotenoid pigment which gives tomatoes their red color and has been the focus of recent scientific research. Lycopene is one of the four main carotenoids normally found in human blood and tissue. Studies show that lycopene is a scavenger of singlet oxygen, offering powerful antioxidant protection. The body cannot convert lycopene into vitamin A; thus lycopene is reserved exclusively... [Read More]
  Available Options
30 gelcap, 5 mg:   $6.73 Add to Cart
60 gelcap, 5 mg:   $10.48 Add to Cart
30 gelcap:   $10.48 Add to Cart
60 gelcap:   $20.19 Add to Cart
Save up to 43%
Maca  
Maca - Source Naturals
          Source Naturals Maca is a standardized extract of this hardy and highly valued plant. Maca is grown at high elevations in the Andes region of central Peru using no fertilizers or pesticides. It has been used for centuries by indigenous Peruvians as a food source and based upon traditional Peruvian folk belief, for increasing stamina and energy. Because of this traditional use, maca has been called... [Read More]
  Available Options
30 Tablet:   $4.18 Add to Cart
60 tablet:   $6.73 Add to Cart
Save up to 44%
Mag/Cal 2:1  
Mag/Cal 2:1 - Source Naturals
          Calcium and magnesium work together in several key physiological processes including the regulation of blood pressure and healthy muscle function. Magnesium is an essential mineral, playing a key role in over 300 enzymatic and metabolic reactions including helping to deposit and maintain calcium in the bones. Calcium is perhaps best known for its role in the formation and structure of bones and te... [Read More]
 
$11.61

Magnesium Ascorbate  
Magnesium Ascorbate - Source Naturals
          Magnesium Ascorbate is nonacidic (pH neutral) and gentle on the digestive system. Vitamin C plays a vital role in collagen formation, amino acid metabolism, hormone synthesis, and the body's immune system. Magnesium is an essential mineral, playing a key role in over 300 enzymatic reactions in metabolism. These reactions include those involved in the Krebs cycle (one of the body's main energy prod... [Read More]
 
Suggested: $19.50
$9.97
Save 49%

Magnesium  
Magnesium - Source Naturals
          Soure Naturals Magnesium Chelate is composed of magnesium bound to amino acids from hydrolyzed vegetable protein, for easy assimilation and utilization.Magnesium is an essential mineral, playing a key role in over 300 enzymatic reactions in metabolism. It is involved in energy production and storage, the breakdown of fatty acids, protein synthesis, DNA metabolism, the relaxation of both voluntary ... [Read More]
  Available Options
100 tablet:   $3.97 Add to Cart
250 tablet:   $9.69 Add to Cart
Save up to 43%