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L-Tryptophan 500 mg

Metabolic Maintenance
4.6
★ ★ ★ ★ ★
(98 ratings)
Tryptophan 500 mg
Product Image
Score73
500 mg of TryptoPure L-tryptophan offers a focused serotonin-precursor approach with weak value, though the formula covers only one pathway.
How scoring works
Quantity:60 Capsule(s) • (60 servings)
Goals:
Sleep Support
Mood Support
Stress Relief

Score 73

500 mg of TryptoPure L-tryptophan offers a focused serotonin-precursor approach with weak value, though the formula covers only one pathway.
How scoring works
$40.00($0.66 per serving)
Pure Formulas
$ 40.00
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$ 40.00
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$ 40.00
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Analysis

L-tryptophan supplies a precursor used in serotonin and melatonin production. The 500 mg amount is a practical starting serving in a capsule.

The TryptoPure source adds clear raw-material differentiation. Effects can vary with timing, diet, and individual metabolism.

10 mg of vitamin B6 supplies a related nutrient, though tryptophan remains the main active. The formula is focused on one neurotransmitter pathway and does not provide broad sleep, stress, or mood coverage.

Who is it for
  • Adults seeking targeted sleep or mood support
  • Users starting with a moderate tryptophan amount
Best for
  • Evening or mood-support routines
  • Standalone tryptophan supplementation

Pros

  • Provides 500 mg of L-tryptophan
  • Uses branded TryptoPure material
  • Capsule format
  • Weak value

Cons

  • Premium sourcing increases cost in some sizes
  • Covers only one neurotransmitter pathway
  • Response may depend on meal timing and individual metabolism

Warnings

  • Do not combine L-tryptophan with SSRIs, SNRIs, MAO inhibitors, tramadol, triptans, or other serotonin-raising medicines without prescriber guidance.
  • Seek urgent care for agitation, confusion, heavy sweating, tremor, or a rapid heartbeat after a serotonergic combination because these can signal excessive serotonin.
  • L-tryptophan may cause drowsiness, so avoid driving or other alertness-dependent tasks until its effects are clear.

Nutrient quality

93 Highest impact

Branded TryptoPure provides useful source-quality differentiation. The tryptophan amount is substantial for targeted supplementation.

Ingredient transparency

85 Highest impact

Every listed active has an individual amount and no proprietary blend hides key doses. Daily directions and the complete inactive-ingredient list are not supplied.

Customer satisfaction

58 Moderate impact

The supplied average is favorable and the aggregate pool is very limited. No specific feedback is provided to assess recurring complaints or whether experience matches the intended use.

Value for money

46 Lower impact

Serving cost is high for the disclosed active amount. Branded sourcing adds quality but does not always justify the premium.

Report analysis

Goals

Sleep Support
Impact
Highest effect
A- Goal FitA- Strength of SupportC+ CoverageA+ Formula Quality

L-tryptophan supports serotonin and melatonin synthesis, while vitamin B6 acts as a metabolic cofactor. The branded amino acid amount is meaningful and clearly disclosed.

The product is focused on one sleep-related biochemical pathway and does not include a direct circadian signal or mineral relaxation support. People using serotonergic antidepressants or other serotonin-raising medicines should use tryptophan only with medical guidance.

Study evidence
Tryptophan Mixed 1 study
Vitamin B6 Disputed 7 studies
Mood Support
Impact
High effect
B- Goal FitA- Strength of SupportC CoverageA Formula Quality
Vitamin B6 · 10 mg

Branded L-tryptophan directly supports serotonin and melatonin production, which may help selected mood and sleep concerns. Vitamin B6 adds a useful cofactor without crowding the formula.

The tryptophan amount, L-isomer identity, and branded source provide strong dose and purity confidence. Do not combine L-tryptophan with SSRIs, SNRIs, MAO inhibitors, or other serotonergic medicines because excessive serotonin can cause a serious reaction.

Study evidence
Tryptophan Mixed 1 study
Vitamin B6 Supportive 19 studies
Stress Relief
Impact
High effect
C Goal FitB+ Strength of SupportC- CoverageA- Formula Quality
Vitamin B6 · 10 mgTryptophan · 500 mg

Branded L-tryptophan may support serotonin and melatonin production, which can help stress-related mood or sleep in selected users. Vitamin B6 adds a relevant cofactor, but the formula addresses a narrow pathway rather than the wider stress response.

The tryptophan amount and branded source provide good dose and purity confidence. Do not combine L-tryptophan with SSRIs, SNRIs, MAO inhibitors, or other serotonergic medicines because excessive serotonin can cause a serious reaction.

Study evidence
Vitamin B6 Supportive 10 studies

Ingredients

IngredientAmount per serving
Vitamin B6 (Pyridoxine Hydrochloride)
10 mg
TryptoPure (L-Tryptophan)
500 mg
Gluten Free Adults 18–50 Dairy Free
Report overview
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyD- Value

Branded TryptoPure L-Tryptophan provides a strong purity signal in a capsule format. No competing large neutral amino acids are present, supporting targeted brain uptake. The clearly listed 500 mg amount falls within the targeted support range, and cost efficiency is in a premium range.

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Sources

Published studies used for the product analysis and the top-ranked studies for each ingredient and goal.

  1. A systematic review of the effect of L-tryptophan supplementation on mood and emotional functioning
    Kikuchi AM, Tanabe A, Iwahori Y · Journal of Dietary Supplements · 2021
    Systematic review11 studies pooledMood Support forTryptophan
  2. High Dose Vitamin B6 Reduces Depression Symptoms.
    Field DT; Cracknell R; Biagi N · Depression and anxiety · 2026
    Randomized trial267 participantsMood Support forVitamin B6
  3. Can Vitamin B6 Help to Prevent Postpartum Depression? A Randomized Controlled Trial.
    Khodadad M; Bahadoran P; Kheirabadi GR; Sabzghabaee AM · International journal of preventive medicine · 2022
    Randomized trial81 participantsMood Support Stress Relief forVitamin B6
  4. Associations of Dietary Intake of Vitamin B6 and Plasma Pyridoxal 5'-Phosphate Level With Depression in US Adults: Findings From NHANES 2005-2010.
    Lu J; Mao H; Tan Y; Luo G · Brain and behavior · 2024
    Cross-sectional study24,683 participantsMood Support forVitamin B6
  5. Associations of dietary B vitamins intakes with depression in adults.
    Wu Y; Li S; Wang W; Zhang D · International journal for vitamin and nutrition research. Internationale Zeitschrift fur Vitamin- und Ernahrungsforschung. Journal international de vitaminologie et de nutrition · 2023
    Observational study17,732 participantsMood Support forVitamin B6
  6. Impact of vitamin B6 status on psychological distress in a longitudinal study of HIV-1 infection.
    Shor-Posner G; Feaster D; Blaney NT; Rocca H; Mantero-Atienza E; Szapocznik J; Eisdorfer C; Goodkin K; Baum MK · International journal of psychiatry in medicine · 1995
    Cohort study88 participantsMood Support forVitamin B6
  7. The impact of tryptophan supplementation on sleep quality: a systematic review, meta-analysis, and meta-regression
    Clarinda N Sutanto, Wen Wei Loh, Jung Eun Kim · Nutrition Reviews · 2022
    Meta-analysis4 studies pooledSleep Support forTryptophan
  8. Efficacy of vitamins B1 and B6 as an adjunctive therapy to lithium in bipolar-I disorder: A double-blind, randomized, placebo-controlled, clinical trial.
    Zandifar A; Mousavi S; Schmidt NB; Badrfam R; Seif E; Qorbani M; Mehrabani Natanzi M · Journal of affective disorders · 2023
    Randomized trial66 participantsSleep Support forVitamin B6
  9. Therapeutic effects of magnesium and vitamin B6 in alleviating the symptoms of restless legs syndrome: a randomized controlled clinical trial.
    Jadidi A; Rezaei Ashtiani A; Khanmohamadi Hezaveh A; Aghaepour SM · BMC complementary medicine and therapies · 2023
    Randomized trial75 participantsSleep Support forVitamin B6
  10. Effects of poly-gamma-glutamic acid and vitamin B6 supplements on sleep status: a randomized intervention study.
    García-García C; Baik I · Nutrition research and practice · 2022
    Randomized trial47 participantsSleep Support forVitamin B6
  11. Effects of Vitamin B6 (Pyridoxine) and a B Complex Preparation on Dreaming and Sleep.
    Adventure-Heart DJ; Madden NA; Delfabbro P · Perceptual and motor skills · 2018
    Randomized trial100 participantsSleep Support forVitamin B6
  12. The effect of pyridoxine administration on melatonin secretion in normal men.
    Luboshitzky R; Ophir U; Nave R; Epstein R; Shen-Orr Z; Herer P · Neuro endocrinology letters · 2003
    Randomized trial12 participantsSleep Support forVitamin B6
  13. Effect of magnesium and vitamin B6 supplementation on mental health and quality of life in stressed healthy adults: Post-hoc analysis of a randomised controlled trial.
    Noah L; Dye L; Bois De Fer B; Mazur A; Pickering G; Pouteau E · Stress and health : journal of the International Society for the Investigation of Stress · 2021
    Randomized trialStress Relief forVitamin B6
  14. RENAL PROTECTIVE EFFECT AND CLINICAL ANALYSIS OF VITAMIN B 6 IN PATIENTS WITH SEPSIS.
    Wang Y; Lu WL; Feng WM; Xu W; Liu LH; He LM · Shock (Augusta, Ga.) · 2024
    Randomized trial128 participantsStress Relief forVitamin B6
  15. Superiority of magnesium and vitamin B6 over magnesium alone on severe stress in healthy adults with low magnesemia: A randomized, single-blind clinical trial.
    Pouteau E; Kabir-Ahmadi M; Noah L; Mazur A; Dye L; Hellhammer J; Pickering G; Dubray C · PloS one · 2019
    Randomized trial264 participantsStress Relief forVitamin B6
  16. Associations between dietary intake of B-vitamins and psychological disorders among Iranian women: a cross-sectional study.
    Mozaffari H; Darooghegi Mofrad M; Surkan PJ; Askari M; Azadbakht L · Public health nutrition · 2021
    Cross-sectional study447 participantsStress Relief forVitamin B6