Tryptophan

Tryptophan is one of 11 essential amino acids that the body does not produce naturally, needing a balanced diet to provide enough. By improving the body's serotonin production tryptophan  promotes sleep, lessening anxiety and depression, and potentially making people feel fuller, 

23 products

  • Bluebonnet, L-tryptophan 500 Mg, 60 Vegetarian Capsules UPC 743715000940 | Hilife VitaminsBluebonnet, L-tryptophan 500 Mg, 60 Vegetarian Capsules UPC 743715000940 | Hilife Vitamins

    Bluebonnet, L-tryptophan 500 Mg, 60 Vegetarian Capsules

    Product Overview : Bluebonnet, L-tryptophan 500 Mg, 60 Vegetarian Capsules Description:  Made with Non-GMO Ingredients Ajipure® Amino Acids Vegan Free-Form Amino Acid Dietary Supplement Kosher Parve...

    $24.76
    $24.76 $30.95
  • Douglas Laboratories, L-Tryptophan, 60 Capsules UPC 310539034149 | HiLife Vitamins

    Douglas Laboratories, L-Tryptophan, 60 Capsules

    UPC: 310539034149Total Weight: 0.15 lbs (0.07 kg)Package Format: 60 VCapsules Gluten Free With B Vitamins Dietary Supplement Douglas Labs L-Tryptophan contains C and B vitamins along...

    $54.50
    $54.50 $54.50
  • Jarrow Formulas, L-Tryptophan, 500 mg, 60 Veggie Caps UPC 790011150565 | HiLife VitaminsJarrow Formulas, L-Tryptophan, 500 mg, 60 Veggie Caps UPC 790011150565 | HiLife Vitamins

    Jarrow Formulas, L-Tryptophan, 500 mg, 60 Veggie Caps

    Product Overview : Jarrow Formulas, L-Tryptophan, 500 mg, 60 Veggie Caps Suggested Use:  Adults take 1 capsule once a day on an empty stomach 30 minutes...

    $19.12
    $19.12 $25.49
  • Life Extension, L-Tryptophan, 500 mg, 90 Capsules UPC 737870172291 | HiLife VitaminsLife Extension, L-Tryptophan, 500 mg, 90 Capsules UPC 737870172291 | HiLife Vitamins

    Life Extension, L-Tryptophan, 500 mg, 90 Capsules

    Product Overview : Life Extension, L-Tryptophan, 500 mg, 90 Capsules Description:  Gluten Free Non GMO LE Certified  Essential Amino Acid for Natural Sleep Enhancement and Stress...

    $24.75
    $24.75 $33.00
  • Life Extension, Optimized Tryptophan Plus, 90 Vegetarian Capsules UPC 737870172192 | HiLife VitaminsLife Extension, Optimized Tryptophan Plus, 90 Vegetarian Capsules UPC 737870172192 | HiLife Vitamins

    Life Extension, Optimized Tryptophan Plus, 90 Vegetarian Capsules

    Product Overview : Life Extension, Optimized Tryptophan Plus, 90 Vegetarian Capsules Description:  Gluten Free Non-GMO LE Certified Sleep Enhancement and Stress Reduction Dietary Supplement A lack...

    $24.00
    $24.00 $32.00
  • Metabolic Maintenance, L-Tryptophan, 500 mg, 60 Capsules UPC 838287001492 | HiLife VitaminsMetabolic Maintenance, L-Tryptophan, 500 mg, 60 Capsules UPC 838287001492 | HiLife Vitamins

    Metabolic Maintenance, L-Tryptophan, 500 mg, 60 Capsules

    Product Overview : Metabolic Maintenance, L-Tryptophan, 500 mg, 60 Capsules Description:  Dietary Supplement Egg Free Gluten Free Free of Nuts Dairy Free L-Tryptophan is the essential...

    $40.00
    $40.00 $40.00
  • Natural Balance, L-Tryptophan 500mg, 60 Vegetarian Capsules UPC 047868356627 | HiLife Vitamins

    Natural Balance, L-Tryptophan 500mg, 60 Vegetarian Capsules

    Description Serotonin Precursor Dietary Supplement Plant Based L-Tryptophan The stress of living in a fast-paced world with demands of work and family may sometimes leave you...

    $29.67
    $29.67 $37.09
  • Now Foods, L-Tryptophan 1000 mg, 60 Tablets UPC 733739001696 | HiLife VitaminsNow Foods, L-Tryptophan 1000 mg, 60 Tablets UPC 733739001696 | HiLife Vitamins

    Now Foods, L-Tryptophan 1000 mg, 60 Tablets

    Product Overview : Now Foods, L-Tryptophan 1000 mg, 60 Tablets Description:  Supports Relaxation Encourages Positive Mood Promotes Restful Sleep Non-GMO A Dietary Supplement Vegetarian/Vegan Kosher Amino...

    $24.69
    $24.69 $37.99
  • Now Foods, L-Tryptophan 500mg 120, 120 Vegetarian Capsules UPC 733739001672 | HiLife VitaminsNow Foods, L-Tryptophan 500mg 120, 120 Vegetarian Capsules UPC 733739001672 | HiLife Vitamins

    Now Foods, L-Tryptophan 500mg 120, 120 Vegetarian Capsules

    Product Overview : Now Foods, L-Tryptophan 500mg 120, 120 Vegetarian Capsules Description:  Supports Relaxation Encourages Positive Mood Promotes Restful Sleep Non-GMO A Dietary Supplement Vegetarian/Vegan Amino...

    $25.99
    $25.99 $39.99
  • Now Foods, L-Tryptophan, 2 OZ Powder UPC 733739002631 | HiLife VitaminsNow Foods, L-Tryptophan, 2 OZ Powder UPC 733739002631 | HiLife Vitamins

    Now Foods, L-Tryptophan, 2 OZ Powder

    Product Overview : Now Foods, L-Tryptophan, 2 OZ Powder Description:  Supports Relaxation Encourages Positive Mood Promotes Restful Sleep Non-GMO A Dietary Supplement Vegetarian/Vegan Amino Acids Family...

    $23.39
    $23.39 $35.99
  • Protocol For Life Balance, L-TRYPTOPHAN 1000MG, 60 Tablets UPC 707359101692 | HiLife Vitamins

    Protocol For Life Balance, L-TRYPTOPHAN 1000MG, 60 Tablets

    Protocol For Life Balance L-Tryptophan Description Encourages Positive Mood Supports Relaxation & Restful Sleep Vegetarian/Vegan Non-GMO How it Works: L-Tryptophan is an essential amino acid; therefore,...

    $38.00
    $38.00 $38.00
  • Protocol For Life Balance, L-TRYPTOPHAN 500MG, 120 Veg Capsules UPC 707359101678 | HiLife Vitamins

    Protocol For Life Balance, L-TRYPTOPHAN 500MG, 120 Veg Capsules

    Protocol For Life Balance L-Tryptophan Description Encourages Positive Mood Supports Relaxation & Restful Sleep Free-Form Amino Acid Vegetarian/Vegan Non-GMO How it Works: L-tryptophan is an essential...

    $40.00
    $40.00 $40.00
  • Protocol For Life Balance, L-TRYPTOPHAN 500MG, 60 Veg Capsules UPC 707359101661 | HiLife Vitamins

    Protocol For Life Balance, L-TRYPTOPHAN 500MG, 60 Veg Capsules

    Protocol For Life Balance L-Tryptophan Description Encourages Positive Mood Supports Relaxation & Restful Sleep Vegetarian/Vegan Non-GMO How it Works: L-Tryptophan is an essential amino acid; therefore,...

    $22.00
    $22.00 $22.00
  • Pure Encapsulations, L-Tryptophan, 180 Capsules UPC 766298020839 | HiLife Vitamins

    Pure Encapsulations, L-Tryptophan, 180 Capsules

    Supports emotional well-being and restful sleep‡ Promotes healthy sleep quality, onset and duration‡ Made with hypoallergenic, vegan ingredients L-Tryptophan promotes serotonin synthesis to support emotional health...

    $124.50
    $124.50 $124.50
  • Pure Encapsulations, L-Tryptophan, 90 Capsules UPC 766298020846 | HiLife Vitamins

    Pure Encapsulations, L-Tryptophan, 90 Capsules

    Supports emotional well-being and restful sleep‡ Promotes healthy sleep quality, onset and duration‡ Made with hypoallergenic, vegan ingredients L-Tryptophan promotes serotonin synthesis to support emotional health...

    $72.50
    $72.50 $72.50
  • Source Naturals, L-Tryptophan 500 mg, 120 Capsules UPC 021078019855 | Hilife VitaminsSource Naturals, L-Tryptophan 500 mg, 120 Capsules UPC 021078019855 | Hilife Vitamins

    Source Naturals, L-Tryptophan 500 mg, 120 Capsules

    Product Overview : Source Naturals, L-Tryptophan 500 mg, 120 Capsules Description:  Dietary Supplement  Mood, Relaxation, Sleep  The essential amino acid L-tryptophan helps support relaxation, restful sleep,...

    $22.75
    $22.75 $32.50
  • Source Naturals, L-Tryptophan 500 mg, 120 Tablets UPC 021078019800 | Hilife VitaminsSource Naturals, L-Tryptophan 500 mg, 120 Tablets UPC 021078019800 | Hilife Vitamins

    Source Naturals, L-Tryptophan 500 mg, 120 Tablets

    Product Overview : Source Naturals, L-Tryptophan 500 mg, 120 Tablets Description:  Dietary Supplement Mood, Relaxation, Sleep Non-GMO Validated Suitable for Vegetarians The essential amino acid L-tryptophan...

    $22.75
    $22.75 $32.50
  • Source Naturals, L-Tryptophan 500 mg, 60 Capsules UPC 021078019848 | Hilife VitaminsSource Naturals, L-Tryptophan 500 mg, 60 Capsules UPC 021078019848 | Hilife Vitamins

    Source Naturals, L-Tryptophan 500 mg, 60 Capsules

    Product Overview : Source Naturals, L-Tryptophan 500 mg, 60 Capsules Description:  Dietary Supplement Mood, Relaxation, Sleep The essential amino acid L-tryptophan helps support relaxation, restful sleep,...

    $12.78
    $12.78 $18.25
  • Source Naturals, L-Tryptophan 500 mg, 60 Tablets UPC 021078019794 | Hilife VitaminsSource Naturals, L-Tryptophan 500 mg, 60 Tablets UPC 021078019794 | Hilife Vitamins

    Source Naturals, L-Tryptophan 500 mg, 60 Tablets

    Product Overview : Source Naturals, L-Tryptophan 500 mg, 60 Tablets Description:  Dietary Supplement Mood, Relaxation, Sleep Non GMO Validated Suitable for Vegetarians The essential amino acid...

    $12.95
    $12.95 $18.50
  • Source Naturals, L-Tryptophan With Coenzyme B-6 500 mg, 60 Tablets UPC 021078019879 | Hilife VitaminsSource Naturals, L-Tryptophan With Coenzyme B-6 500 mg, 60 Tablets UPC 021078019879 | Hilife Vitamins

    Source Naturals, L-Tryptophan With Coenzyme B-6 500 mg, 60 Tablets

    Product Overview : Source Naturals, L-Tryptophan With Coenzyme B-6 500 mg, 60 Tablets Description:  Dietary Supplement Mood Enhancement and Sleep The essential amino acid L-tryptophan helps...

    $12.95
    $12.95 $18.50
  • Source Naturals, L-Tryptophan With Vitamin B-6 1000 mg, 90 Tablets UPC 021078026105 | Hilife VitaminsSource Naturals, L-Tryptophan With Vitamin B-6 1000 mg, 90 Tablets UPC 021078026105 | Hilife Vitamins

    Source Naturals, L-Tryptophan With Vitamin B-6 1000 mg, 90 Tablets

    Product Overview : Source Naturals, L-Tryptophan With Vitamin B-6 1000 mg, 90 Tablets Description:  Dietary Supplement With Vitamin B-6 Mood, Relaxation, Sleep The essential amino acid...

    $38.33
    $38.33 $54.75
  • Thorne Research, 5-Hydroxytryptophan, 90 Thorne Research UPC 693749503026 | HiLife VitaminsThorne Research, 5-Hydroxytryptophan, 90 Thorne Research UPC 693749503026 | HiLife Vitamins

    Thorne Research, 5-Hydroxytryptophan, 90 Thorne Research

    Product Overview : Thorne Research, 5-Hydroxytryptophan, 90 Thorne Research Description:  Dietary Supplement Mood Sleep Gluten Free Enhances sleep and helps manage stress. 5-HTP increases serotonin levels...

    $39.00
    $39.00 $39.00
  • Zahler, L-Tryptophan 500 mg, 60 Capsules UPC 848998081249 | HiLife Vitamins

    Zahler, L-Tryptophan 500 mg, 60 Capsules

    Description Advanced Nutrition by Zahler Purified L-Tryptophan High Potency Serotonin Enhancer Mind & Spirit Dietary Supplement Feel Better, Everyday Free of Gluten Kosher Pareve Dairy Free...

    $23.96
    $23.96 $29.95