Product Image

L-Tryptophan

Pure Encapsulations
4.6
★ ★ ★ ★ ★
(17 ratings)
Tryptophan 1000 mg
Product Image
Score72
1,000 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:180 Capsule(s) • (90 servings)
Goals:
Stress Relief
Sleep Support
Mood Support

Score 72

1,000 mg of TryptoPure L-tryptophan offers a focused serotonin-precursor approach with weak value, though the formula covers only one pathway.
How scoring works
$124.50($1.38 per serving)
Pure Formulas
$ 124.50
Report prices

Analysis

L-tryptophan supplies a precursor used in serotonin and melatonin production. The 1,000 mg amount is substantial for targeted use in a two-capsule serving.

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

6.7 mg of pyridoxal 5-phosphate 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 comfortable with a substantial tryptophan serving
Best for
  • Evening or mood-support routines
  • Standalone tryptophan supplementation

Pros

  • Provides 1,000 mg of L-tryptophan
  • Uses branded TryptoPure material
  • Two-capsule serving 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

91 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

55 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

Stress Relief
Impact
Highest effect
A- Goal FitA+ Strength of SupportB- CoverageA+ Formula Quality
Vitamin B6 · 6.7 mgTryptophan · 1000 mg

Branded L-tryptophan supports serotonin and melatonin production, while active vitamin B6 supplies a related cofactor. The amount is well aligned with targeted mood or sleep support.

The compact formula avoids competing amino acids that could limit brain uptake. Tryptophan should be used cautiously with serotonergic medicines because combining serotonin-promoting agents may increase adverse effects.

Study evidence
Vitamin B6 Supportive 10 studies
Sleep Support
Impact
Highest effect
B Goal FitA Strength of SupportC+ CoverageA+ Formula Quality

L-tryptophan supports the body’s serotonin and melatonin production pathway, while active B6 aids amino-acid metabolism. The approach is gentler and less direct than taking melatonin.

The 1,000 mg branded TryptoPure amount sits within a targeted sleep-support range and avoids competing amino acids. Tryptophan may interact with SSRIs, SNRIs, MAO inhibitors, tramadol, or triptans by increasing serotonergic effects.

Study evidence
Tryptophan Mixed 1 study
Mood Support
Impact
Highest effect
B+ Goal FitA Strength of SupportC CoverageA+ Formula Quality
Vitamin B6 · 6.7 mg

L-tryptophan directly supplies a serotonin precursor, while active B6 supports its conversion. The branded high-purity form and substantial amount make the formula well aligned with mood support.

Coverage remains focused on one neurotransmitter pathway rather than stress or structural support. Tryptophan should not be combined casually with SSRIs, SNRIs, MAO inhibitors, tramadol, or other serotonergic agents.

Study evidence
Tryptophan Mixed 1 study

Ingredients

IngredientAmount per serving
Vitamin B6 (Pyridoxal 5-Phosphate)
6.7 mg
TryptoPure L-Tryptophan
1000 mg
Gluten Free Adults 18–50 Women
Report overview
Tryptophan · 1000 mg OverallScore88
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 1000 mg amount falls within the targeted support range, and cost efficiency is in a premium range.

Loading alternative details
Report alternatives

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. 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
  3. 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
  4. 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 participantsStress Relief forVitamin B6
  5. 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
  6. 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
  7. 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