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Dr. Stephen Langer's Ultimate 16 Strain Probiotic with FOSDr. Stephen Langer's Ultimate 16 Strain Probiotic with FOS
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  • 5-HTP5-HTP

    5-HTP

    Nature's Way 5-HTP helps make serotonin to promote a positive outlook. With vitamins B6 and C. 100 mg 5-HTP from griffonia seed extract per 2-tablet serving.
    $4.14
    $13.79
    $4.14
  • Vegan 5-HTPVegan 5-HTP

    Vegan 5-HTP

    Jarrow Formulas Vegan 5-HTP (5-hydroxytyptophan) is an extract of Griffonia simplicifolia seeds from coastal West Africa. 5-HTP is the direct metabolic precursor of serotonin and is important for the production of melatonin.
    $6.00
    $19.99
    $6.00
  • 5-HTP Enhanced with Vitamins B6 and C5-HTP Enhanced with Vitamins B6 and C

    5-HTP Enhanced with Vitamins B6 and C

    Doctor's Best® 5-HTP Enhanced with Vitamins B6 and C is enhanced with vitamins B6 and C to help maintain mental and emotional well-being. 5-HTP (or 5-hydroxy L-tryptophan) is a naturally occurring metabolite of the amino acid tryptophan. It is converted in the brain to...
    $5.10
    $16.99
    $5.10
  • 5-HTP5-HTP

    5-HTP

    Doctor's Best 5-HTP is a naturally occurring metabolite of the amino acid tryptophan. 5-HTP (5-hydroxy L-tryptophan) is converted in the brain to serotonin, a neurotransmitter substance found at the junctions (synapses) between neurons. 5-HTP helps maintain mental and emotional well-being and promotes healthy sleep. Doctor's...
    $3.00
    $9.99
    $3.00
  • Double Potency 5-HTP Extra

    Double Potency 5-HTP Extra

    Double Potency 5-HTP Extraâ„¢ from Irwin Naturals is a comprehensive formula designed to support mood and relaxation. It features 5-Hydroxytryptophan (5-HTP), a naturally occurring amino acid that is the immediate precursor of serotonin. The plant-derived compound is sourced from Griffonia simplicifolia which helps the...
    $6.00
    $19.99
    $6.00
  • 5-HTP Fast Dissolve - Mixed Berry5-HTP Fast Dissolve - Mixed Berry

    5-HTP Fast Dissolve - Mixed Berry

    Natrol 5-HTP 100mg delivers natural mood support in a delicious mixed berry flavored tablet. 5-HTP is a drug-free, plant-derived source of an amino acid that naturally increases the body's level of serotonin, the chemical messenger that affects emotions, behavior, appetite, thought and sleep. 
    $3.90
    $12.99
    $3.90
  • Vegan 5-HTPVegan 5-HTP

    Vegan 5-HTP

    Gain emotional balance and learn to smile again with 5-HTP, the direct metabolic precursor of serotonin, commonly called the "happy" hormone. 5-HTP is also important for the production of melatonin, another important hormone that helps us enjoy restful sleep. Jarrow Formulas 5-HTP (5-Hydroxytryptophan) is...
    $4.50
    $14.99
    $4.50
  • 5-HTP5-HTP

    5-HTP

    5-HTP from Source Naturals is a natural L-5-hydroxytryptophan dietary supplement designed to help support natural sleep cycles. 5-HTP 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...
    $9.76
    $32.55
    $9.76
  • Enteric Coated 5-HTPEnteric Coated 5-HTP

    Enteric Coated 5-HTP

    Promote healthy, restorative sleep with Solaray 5-HTP. L-5-hydroxyTryptophan (L-5HTP) is converted by the body to serotonin, which is a major neurotransmitter of the central nervous system. Solaray 5-HTP delivers 50 mg of L-5-HTP per capsule.
    $6.81
    $22.69
    $6.81
  • Healthy Mood 5-HTP Elite - RaspberryHealthy Mood 5-HTP Elite - Raspberry

    Healthy Mood 5-HTP Elite - Raspberry

    Healthy Mood 5-HTP Elite- Raspberry from Carlson delivers 100 mg of 5-hydroxytryptophan from griffonia seeds. 5-HTP is normally produced within our body and converts into serotonin, a major neural transmitter in our brain. Vitamin B6 is added to this formula to support this conversion....
    $8.29
    $27.63
    $8.29
  • Glycine Powder - Featuring AjiPureGlycine Powder - Featuring AjiPure

    Glycine Powder - Featuring AjiPure

    Glycine is a nonessential amino acid your body synthesizes from the amino acid serine. Certain individuals find supplementation to be helpful for a variety of specialized needs. Glycine functions as a neurotransmitter. If your healthcare provider has recommended a glycine supplement, Swanson AjiPure Glycine...
    $5.01
    $16.69
    $5.01
  • Glycine

    Glycine

    Glycine is a non-essential amino acid and has the simplest structure of all amino acids, allowing it to fit easily within protein chains and make space for structurally larger amino acids. This feature makes it very important for specific bodily functions. Glycine is also...
    $3.21
    $10.69
    $3.21
  • Glycine

    Glycine

    Promote healthy, restful sleep with Life Extension Glycine. A valuable amino acid, Glycine plays a role in many functions throughout the body, including as a neurotransmitter in the central nervous system. Each serving of Life Extension Glycine delivers 1,000 mg of glycine. 
    $3.96
    $13.19
    $3.96
  • L-Tryptophan from TryptoPureL-Tryptophan from TryptoPure

    L-Tryptophan from TryptoPure

    It's back, and better than ever! L-Tryptophan is a precursor to serotonin, and it's powerfully effective when used properly. By supporting serotonin levels, L-tryptophan not only helps us fall asleep and stay asleep, but it also promotes mental health and provides dietary support against...
    $8.61
    $28.69
    $8.61
  • Glycine Pure PowderGlycine Pure Powder

    Glycine Pure Powder

    NOW Glycine Pure Powder is a vegan product that supports energy production. Glycine is a non-essential amino acid and has the simplest structure of all amino acids, allowing it to fit easily within protein chains and make space for structurally larger amino acids. This...
    $6.48
    $21.59
    $6.48
  • Propionyl L-Carnitine with GlycinePropionyl L-Carnitine with Glycine

    Propionyl L-Carnitine with Glycine

    Swanson Propionyl-L-Carnitine with Glycine is a dietary ingredient that provides a special form of carnitine used for heart health. PLC (Propionyl L-Carnitine) is used in clinical settings to deliver direct assistance in the production of cardiovascular energy. Propionyl- L-Carnitine with Glycine combines a low...
    $9.24
    $30.79
    $9.24
  • L-TryptophanL-Tryptophan

    L-Tryptophan

    NOW® L-Tryptophan is pharmaceutically pure--every lot is tested to be free of Peak E and microbial contamination. 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,...
    $7.53
    $25.09
    $7.53
  • L-TryptophanL-Tryptophan

    L-Tryptophan

    L-Tryptophan is an essential amino acid important in human nutrition for the synthesis of melatonin and serotonin, hormones regulating sleep, positive mood and immune function. As an essential amino acid, it is not synthesized by the body and must be obtained from the diet....
    $4.65
    $15.49
    $4.65
  • L-TryptophanL-Tryptophan

    L-Tryptophan

    Source Naturals L-Tryptophan promotes positive mood, relaxation and sleep. This essential amino acid plays a part in the synthesis of melatonin and serotonin, the hormones involved with mood, stress response and sleep/wake cycles. L-Tryptophan also supports the body's immune system. Contains no yeast, dairy,...
    $8.10
    $26.99
    $8.10
  • Glycine

    Glycine

    Each capsule of Source Naturals Glycine delivers 500 mg of this important amino acid. Found in proteins of all life forms, glycine plays a key role in the synthesis of proteins and ATP. Contains no yeast, dairy, egg, gluten, corn, soy, wheat, sugar, starch,...
    $5.10
    $16.99
    $5.10

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