5-HTP 50 mg

5-HTP 50 mg

Metabolic Maintenance4.5 (46 ratings)
Format:Capsule Quantity: 60 Capsule(s) · 60 servings
Goals
$25.00 $0.41 per serving

Product analysis

42 out of 100

5-HTP 50 mg is intended for mood and relaxation, but noticeable everyday benefits remain uncertain.

AI assessment of the formula, label and price. How scoring works

Nutrient Quality20

The ingredient forms are unspecified, leaving their preparation quality uncertain. Ingredient names alone do not establish how well the mixture can be used.

Ingredient Transparency63

All ingredient amounts are listed, making serving comparisons possible. The forms are unspecified, so the preparations cannot be compared as precisely.

Value For Money19

The serving price offers poor value for 5-HTP and limited value for glycine. Value for vitamin B6 remains uncertain, making the combination hard to justify on cost alone.

Customer Satisfaction66

Early ratings are positive, but the small number of reviews limits confidence. A handful of opinions cannot establish a typical experience or health benefit.

Product Focus62

Mood and relaxation give the formula a recognizable purpose, but the expected effects remain uncertain. The small glycine amount adds little support for sleep quality.

Format
Capsule
Container
60 Capsule(s)
Per serving
$0.41
Customer rating
4.5 · 46 ratings
Report analysis

Goals

Mood Support
Impact
High effect
B Ingredient FitF PathwaysA EvidenceA+ Formulation Logic
Vitamin B6 · 3 mg5-HTP · 50 mg

5-HTP is a serotonin precursor, but that role does not establish a noticeable mood benefit. The supplied older-adult study did not find a significant mood improvement over its control group. Clinical depression findings do not establish routine benefit in generally healthy adults. B6 is below the saved amount threshold.

How this product is rated for Mood Support

Ingredient fit76

The relevant ingredients contribute within the supplied amount and preparation comparisons. A matching amount does not establish routine mood benefit outside the populations described.
Goal fit
The relevant ingredients form a focused formula, although the product also addresses other goals.
Dose adequacy
The declared amounts provide partial to substantial matches to the supplied comparisons; these matches do not predict individual benefit.

Pathways19

The saved findings emphasize monoamine signalling. These routes describe ingredient relationships rather than demonstrated combined effects.
Depth
Neurotransmitter-related activity is the strongest represented route, without proving a noticeable mood effect.
Breadth
No route reaches the saved breadth threshold, so the contribution remains narrow.

Evidence94

The leading ingredient determines the strongest comparison, with population and preparation limits shaping what mood benefits can be expected.
Evidence strength
5-HTP leads the supplied comparison, although the supplied controlled mood findings do not establish routine benefit.
Studied preparation
The saved findings accept the counted preparations, but that does not extend clinical or preparation-specific results to every healthy user.

Formulation logic100

No missing required partner or listed ingredient conflict limits the counted contributions. Meeting the amount threshold does not prove a noticeable benefit.
Partner coverage
The counted ingredients can contribute without a missing required partner; this does not establish an added benefit from combining them.
Conflicts
No ingredient combination matched the supplied conflict checks.
Effective doses
The counted ingredients meet the saved minimum amount threshold, which is a comparison rule rather than a proven effective dose.
Study evidence
5-HTP Supportive 9 studies
Glycine Mixed 3 studies
Vitamin B6 Supportive 19 studies
Impact
Moderate effect
B Ingredient FitD- PathwaysC- EvidenceA+ Formulation Logic
Glycine · 220 mg

5-HTP may offer a narrow precursor link to sleep, but its likely role at 50 mg is limited and the product has no direct sleep-timing ingredient. Glycine and vitamin B6 are also present, but their amounts add little to sleep support.

The 220 mg of glycine is far below amounts associated with a possible sleep-quality contribution, and B6's normal role in the body doesn't establish that extra B6 improves sleep. The formula's potential therefore rests mainly on 5-HTP, whose sleep role remains uncertain.

How this product is rated for Sleep Support

Ingredient fit76

5-HTP is the main sleep-related ingredient; the small glycine amount adds little, and B6 doesn't establish a separate sleep benefit.
Goal fit
5-HTP is the only meaningful sleep-oriented active; glycine adds little at its listed amount, and B6 has no established sleep role.
Dose adequacy
The 50 mg 5-HTP amount offers a limited potential contribution; 220 mg glycine adds little, and 3 mg B6 doesn't establish sleep benefit.

Pathways40

The product's potential centers on the serotonin-melatonin precursor route, without a separate timing or calming role.
Depth
5-HTP points to precursor activity, but the product doesn't address sleep timing or direct calming.
Breadth
The formula centers on one precursor route, without another distinct sleep process receiving similar support.

Evidence58

5-HTP has a limited, population-specific connection to sleep; the other amounts don't establish additional sleep benefit.
Evidence strength
5-HTP has a narrower sleep connection than melatonin and doesn't establish a general benefit for adults.
Studied preparation
5-HTP is named, while the product doesn't identify a special preparation that broadens its sleep role.

Formulation logic100

The ingredients don't create a supported added benefit together; 5-HTP supplies the main potential sleep contribution.
Partner coverage
No ingredient partner is shown to add a separate sleep benefit to 5-HTP here.
Conflicts
No ingredient combination is identified as conflicting with sleep.
Effective doses
The 5-HTP amount carries the main potential; glycine adds little, and B6's presence doesn't establish a sleep contribution.
Study evidence
5-HTP Supportive 1 study
Glycine Supportive 3 studies
Stress Relief
Impact
Moderate effect
B Ingredient FitF PathwaysC- EvidenceA+ Formulation Logic
Glycine · 220 mgVitamin B6 · 3 mg

5-HTP may help with some anxiety or stress-related symptoms, but whether it offers reliable everyday relief remains unclear. Its possible contribution is conditional, so the presence of 5-HTP alone is not a reason to expect broad or lasting relief.

How this product is rated for Stress Relief

Ingredient fit76

5-HTP is the ingredient with a direct, though conditional, stress-related role. The serving contains 50 mg of 5-HTP, matching the lower 50 mg comparison amount.
Goal fit
5-HTP is the ingredient with a direct, though conditional, stress-related role.
Dose adequacy
The serving contains 50 mg of 5-HTP, matching the lower 50 mg comparison amount.

Pathways13

5-HTP’s relevance centers on mood-related chemical signaling, with a smaller sleep-related connection.
Depth
5-HTP’s relevance centers on mood-related chemical signaling, with a smaller sleep-related connection.
Breadth
The possible contribution is concentrated in mood-related functions rather than broad stress relief.

Evidence56

5-HTP has conditional anxiety and stress-related applicability; everyday benefit remains uncertain. 5-HTP is identified, but its identity alone does not guarantee everyday relief.
Evidence strength
5-HTP has conditional anxiety and stress-related applicability; everyday benefit remains uncertain.
Studied preparation
5-HTP is identified, but its identity alone does not guarantee everyday relief.

Formulation logic100

The declared 5-HTP amount allows comparison; the smaller accompanying ingredients do not demonstrate added stress relief. No particular ingredient conflict is identified.
Partner coverage
No required ingredient partner is missing for the relevant ingredients.
Conflicts
No particular ingredient conflict is identified.
Effective doses
The declared 5-HTP amount allows comparison; the smaller accompanying ingredients do not demonstrate added stress relief.
Study evidence
5-HTP Supportive 18 studies
Glycine Supportive 1 study

Ingredients

IngredientAmount per servingScore
Vitamin B6
3 mg
5-HTP
50 mg 48
Glycine
220 mg 48
Gluten Free Adults 18–50 Dairy Free
Report overview
Glycine · 220 mg OverallScore48
C Active Ingredient Quality & BioavailabilityD Dose, Safety & Label TransparencyF Value
Each serving provides 220 mg of glycine, a relatively small amount. The whole-product price works out to about $1.89 per gram of glycine, a relatively high cost on that basis.
How this ingredient is rated

Active Ingredient Quality & Bioavailability60

The saved facts record a good manufacturing practice claim; that alone does not establish glycine purity.
Glycine Sourcing and Purity Standards
The saved facts record a good manufacturing practice claim; that alone does not establish glycine purity.

Dose, Safety & Label Transparency46

The serving discloses 220 mg of glycine. Ordinary excipients are recorded.
Clinically Relevant Dosage
The serving contains 220 mg of glycine, a relatively small amount.
Label Transparency and Yield Disclosure
The glycine amount is individually disclosed as 220 mg per serving.
Clean Label and Excipient Quality
The saved facts record ordinary excipients; they do not establish that the complete ingredient list is minimal.

Value30

The whole-product price works out to about $1.89 per gram of glycine, a relatively high cost on that basis.
Cost Efficiency per 1,000mg of Glycine
The whole-product price works out to about $1.89 per gram of glycine, a relatively high cost on that basis.
5-HTP · 50 mg OverallScore48
D- Active Ingredient Quality & BioavailabilityB Dose, Safety & Label TransparencyF Value
Each capsule provides 50 mg of 5-HTP, with no botanical source identified in the saved facts. The whole-product price works out to about $0.83 per 100 mg of 5-HTP, which is relatively high in this comparison.
How this ingredient is rated

Active Ingredient Quality & Bioavailability40

The saved facts name 5-HTP but do not identify its botanical source.
Botanical Source & Standardization
The saved facts name 5-HTP but do not identify its botanical source.

Dose, Safety & Label Transparency79

A serving provides 50 mg of 5-HTP. The saved evaluation records a warning about serotonin-affecting medicines.
Dosage Potency & Range
A serving provides 50 mg of 5-HTP.
Safety Warnings & Label Clarity
The saved evaluation records a warning about serotonin-affecting medicines.

Value0

At about $0.83 per 100 mg of 5-HTP, the whole-product price is high in this comparison.
Price per 100mg 5-HTP
The whole-product price works out to about $0.83 per 100 mg of 5-HTP.
Report alternatives

Sources

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

  1. Comparative study of efficacy of l-5-hydroxytryptophan and fluoxetine in patients presenting with first depressive episode.
    Jangid P; Malik P; Singh P; Sharma M; Gulia AK · Asian journal of psychiatry · 2013
    Randomized trial70 participantsMood Support for5-HTP
  2. The Impact of 5-Hydroxytryptophan Supplementation on Cognitive Function and Mood in Singapore Older Adults: A Randomized Controlled Trial.
    Li S; Sutanto CN; Xia X; Kim JE · Nutrients · 2025
    Randomized trial30 participantsMood Support for5-HTP
  3. Effects of 5-hydroxytryptophan on distinct types of depression: a systematic review and meta-analysis.
    Javelle F; Lampit A; Bloch W; Häussermann P; Johnson SL; Zimmer P · Nutrition reviews · 2020
    Meta-analysis13 studies pooledMood Support for5-HTP
  4. Tryptophan and 5-hydroxytryptophan for depression.
    Shaw K; Turner J; Del Mar C · The Cochrane database of systematic reviews · 2002
    Systematic review64 participants2 studies pooledMood Support for5-HTP
  5. 5-Hydroxytryptophan (5-HTP) and a MAOI (nialamide) in the treatment of depressions. A double-blind controlled study.
    Aliño JJ; Gutierrez JL; Iglesias ML · International pharmacopsychiatry · 1976
    Non-randomized trial30 participantsMood Support for5-HTP
  6. [Augmentation of antipsychotics with glycine may ameliorate depressive and extrapyramidal symptoms in schizophrenic patients--a preliminary 10-week open-label study].
    Strzelecki D; Kropiwnicki P; Rabe-Jabłońska J · Psychiatria polska · 2014
    Single-arm trial29 participantsMood Support forGlycine
  7. Markers of glutamate signaling in cerebrospinal fluid and serum from patients with bipolar disorder and healthy controls.
    Pålsson E; Jakobsson J; Södersten K; Fujita Y; Sellgren C; Ekman CJ; Ågren H; Hashimoto K; Landén M · European neuropsychopharmacology : the journal of the European College of Neuropsychopharmacology · 2015
    Cross-sectional study327 participantsMood Support forGlycine
  8. Erythrocyte glycine in depressed, hypomanic, and euthymic bipolar patients treated with lithium carbonate.
    Peselow ED; Deutsch SI; Stanley M; Banay-Schwartz M; Virgilio J; Fieve RR · Psychopharmacology · 1983
    Cross-sectional study27 participantsMood Support forGlycine
  9. High Dose Vitamin B6 Reduces Depression Symptoms.
    Field DT; Cracknell R; Biagi N · Depression and anxiety · 2026
    Randomized trial267 participantsMood Support forVitamin B6
  10. 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
  11. 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
  12. 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
  13. 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
  14. The impact of 5-hydroxytryptophan supplementation on sleep quality and gut microbiota composition in older adults: A randomized controlled trial.
    Sutanto CN; Xia X; Heng CW; Tan YS; Lee DPS; Fam J; Kim JE · Clinical nutrition (Edinburgh, Scotland) · 2024
    Randomized trial30 participantsSleep Support for5-HTP
  15. The effect of glycine administration on the characteristics of physiological systems in human adults: A systematic review.
    Soh J; Raventhiran S; Lee JH; Lim ZX; Goh J; Kennedy BK; Maier AB · GeroScience · 2024
    Systematic reviewSleep Support forGlycine
  16. New therapeutic strategy for amino acid medicine: glycine improves the quality of sleep.
    Bannai M; Kawai N · Journal of pharmacological sciences · 2012
    Narrative reviewSleep Support forGlycine
  17. The effects of glycine on subjective daytime performance in partially sleep-restricted healthy volunteers.
    Bannai M; Kawai N; Ono K; Nakahara K; Murakami N · Frontiers in neurology · 2012
    Clinical trial7 participantsSleep Support forGlycine
  18. 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
  19. 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
  20. 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