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Melatonin 5 mg

NOW
4.8
★ ★ ★ ★ ★
(4638 ratings)
Melatonin 5 mg
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Score81

A clean, long-supply 5 mg tablet is practical for established users but too strong for many beginners.

How scoring works
Quantity:120 Tablet(s) • (120 servings)
Goals:
Sleep Support
General Health
Immunity

Score 81

A clean, long-supply 5 mg tablet is practical for established users but too strong for many beginners.

How scoring works

Also available as

5 options
3.00mg • 180 Capsule(s) servings Melatonin 3 mg • 180 Capsule(s) • 180 servings $8.70 ($0.04 per serving) 60 servings Melatonin 5 mg • 60 Capsule(s) • 60 servings $3.98 ($0.06 per serving) 180 servings Melatonin 5 mg • 180 Capsule(s) • 180 servings $11.60 ($0.06 per serving) 3.00mg • 60 Capsule(s) servings Melatonin 3 mg • 60 Capsule(s) • 60 servings $3.62 ($0.06 per serving) 10.00mg • 100 Capsule(s) servings Melatonin 10 mg • 100 Capsule(s) • 100 servings $7.00 ($0.07 per serving)
$8.70($0.07 per serving)
Daily Vita
$ 8.70
iHerb
$ 9.17
Vitacost
$ 9.85
Amazon
$ 8.70
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Analysis

The tablet supplies 5 mg melatonin as its only listed active. The formula is easy to assess and avoids unrelated ingredients.

The amount may be more than needed for many users and can increase next-day effects. Standard release is focused on sleep onset rather than staying asleep.

One hundred twenty servings provide strong convenience and value. It should be chosen for sleep timing, not as a primary immune or general-health supplement.

Who is it for
  • Adults who tolerate 5 mg
  • Users seeking a simple formula
  • People wanting a long package supply
Best for
  • Sleep-onset routines
  • Travel-related timing support
  • Established occasional use

Pros

  • Single active ingredient
  • One-tablet serving
  • One hundred twenty servings
  • Clear dose

Cons

  • Five milligrams may be excessive
  • No overnight-release support
  • No adjustable dosing
  • Weak direct fit for immunity

Warnings

  • Five milligrams may cause grogginess, vivid dreams, or headache
  • Do not combine casually with alcohol or sedative medicines
  • Avoid nighttime redosing because morning impairment may increase

Nutrient quality

78 High impact

The standard delivery format offers no controlled overnight release. The elevated melatonin amount may be more than some users need.

Ingredient transparency

83 Highest impact

All listed active ingredients have individual amounts and no proprietary blend hides them. Daily directions and the complete inactive-ingredient list are not supplied.

Customer satisfaction

70 High impact

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

Value for money

91 Highest impact

Serving cost is low for the disclosed formula. The focused design avoids paying for unnecessary actives.

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Goals

Sleep Support
Sleep Support
Impact
Highest effect
A Goal FitB Strength of SupportC CoverageA Formula Quality
Melatonin · 5 mg

Melatonin directly supports sleep timing and can help with difficulty falling asleep. The amount is above the lower physiological range and may cause next-morning drowsiness in sensitive users.

The single tablet clearly delivers the full amount. Its simple immediate-release design does not address mental relaxation or sustained overnight support.

Study evidence
Melatonin Supportive 181 studies
General Health
General Health
Impact
High effect
C- Goal FitB Strength of SupportD CoverageA Formula Quality

Melatonin may support sleep timing, which can indirectly contribute to daily recovery and well-being. The product is more suitable for a specific sleep need than for filling broad nutritional gaps.

The clearly stated amount makes use easy to assess, though immediate-release delivery offers no overnight support. Higher-dose versions may increase next-day grogginess or vivid dreams in sensitive users.

Study evidence
Melatonin Supportive 69 studies
Immunity
Immunity
Impact
Moderate effect
D- Goal FitC Strength of SupportF CoverageA- Formula Quality

Melatonin may support immune resilience indirectly through sleep, but it is not a primary immune active. The tablet provides a clearly stated single-ingredient amount.

The amount is higher than many users need for circadian support and may increase next-day effects. Melatonin can cause drowsiness, so users should avoid driving or other alertness-dependent activity if affected.

Study evidence
Melatonin Supportive 10 studies

Ingredients

IngredientAmount per serving
Melatonin
5 mg
Gluten Free Adults 18–50 Vegan Dairy Free Women Vegetarian
Report overview
Melatonin · 5 mg OverallScore62
F Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyA+ Value

The 5 mg dose is easy to track in one tablet but sits above the physiological range. Standard hard-tablet delivery provides neither rapid onset nor sustained overnight support. The serving is highly cost efficient, while third-party purity verification is not disclosed.

View ingredientView products
Loading alternative details
88 Performance

Melatonin 1.0 mg Orange Flavor

Source Naturals Sleep Science
<p>The dissolving tablet offers a clearly disclosed 1 mg amount for prompt sleep-onset use, providing a lower dose than the original's 5 mg. No sustained-release feature is identified for support later in the night.</p>
87 Performance

Melatonin Lozenges 3 mg

Life Extension
<p>The lozenge offers a clearly disclosed 3 mg amount for prompt sleep-onset use, providing a lower dose than the original's 5 mg. No sustained-release feature is identified for support later in the night.</p>
86 Performance

Melatonin 3 mg Fast Dissolve Strawberry Natural Flavor

Natrol
<p>The fast-dissolve tablet offers a clearly disclosed 3 mg amount for prompt sleep-onset use, providing a lower dose than the original's 5 mg. No sustained-release feature is identified for support later in the night.</p>
87 Budget

Melatonin 1 mg

Nature's Bounty
<p>The 1 mg immediate-release tablet provides a lower dose than the original's 5 mg at a lower serving cost. No sustained-release feature is identified for support later in the night.</p>
86 Budget

Fast-Dissolve Melatonin 3 mg Artificial Strawberry Flavor

Spring Valley
<p>The 3 mg fast-dissolve tablet provides a lower dose than the original's 5 mg at a lower serving cost. No sustained-release feature is identified for support later in the night.</p>
85 Budget

Melatonin 1 mg

Swanson Premium Brand
<p>The 1 mg immediate-release capsule provides a lower dose than the original's 5 mg at a lower serving cost. No sustained-release feature is identified for support later in the night.</p>
85 Value

Quick Dissolve Melatonin 3 mg

Nature's Bounty
<p>The 3 mg quick-dissolve tablet combines a practical sleep-onset dose with a lower serving cost. No sustained-release feature is identified for support later in the night.</p>
83 Value

Melatonin 3 mg

NOW
<p>The 3 mg liquid or dissolving format combines a practical sleep-onset dose with a lower serving cost. No sustained-release feature is identified for support later in the night. Vitamin B6 is included but adds little direct sleep value.</p>
86 Value

Melatonin Lozenge 2.5 mg

Nature's Way
<p>The 2.5 mg lozenge combines a practical sleep-onset dose with a lower serving cost. No sustained-release feature is identified for support later in the night.</p>
Report alternatives

Sources

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

  1. Melatonin for preventing and treating jet lag.
    Herxheimer A; Petrie KJ · The Cochrane database of systematic reviews · 2001
    Systematic review10 studies pooledGeneral Health forMelatonin
  2. Pediatric Prolonged-Release Melatonin for Sleep in Children with Autism Spectrum Disorder: Impact on Child Behavior and Caregiver's Quality of Life.
    Schroder CM; Malow BA; Maras A; Melmed RD; Findling RL; Breddy J; Nir T; Shahmoon S; Zisapel N; Gringras P · Journal of autism and developmental disorders · 2019
    Randomized trial125 participantsGeneral Health forMelatonin
  3. Effect of melatonin supplementation on sleep quality: a systematic review and meta-analysis of randomized controlled trials.
    Fatemeh G; Sajjad M; Niloufar R; Neda S; Leila S; Khadijeh M · Journal of neurology · 2022
    Meta-analysis23 studies pooledGeneral Health forMelatonin
  4. Efficacy of melatonin for chronic insomnia: Systematic reviews and meta-analyses.
    Choi K; Lee YJ; Park S; Je NK; Suh HS · Sleep medicine reviews · 2022
    Meta-analysis24 studies pooledGeneral Health forMelatonin
  5. Effectiveness of melatonin for the treatment of nocturia: a randomized controlled trial.
    Leerasiri P; Pariyaeksut P; Hengrasmee P; Asumpinwong C · International urogynecology journal · 2023
    Randomized trial60 participantsGeneral Health forMelatonin
  6. Exogenous melatonin boosts vaccine-induced immunity in individuals with high pre-existing influenza immunity.
    Oda K; Danko J; Villasante E; Bergmann-Leitner E; Lee R; Wijayalath W · Frontiers in immunology · 2025
    Randomized trialImmunity forMelatonin
  7. Evaluation of melatonin effectiveness in the adjuvant treatment of ulcerative colitis.
    Chojnacki C; Wisniewska-Jarosinska M; Walecka-Kapica E; Klupinska G; Jaworek J; Chojnacki J · Journal of physiology and pharmacology : an official journal of the Polish Physiological Society · 2012
    Randomized trial60 participantsImmunity forMelatonin
  8. Pineal-opioid system interactions in the control of immunoinflammatory responses.
    Lissoni P; Barni S; Tancini G; Fossati V; Frigerio F · Annals of the New York Academy of Sciences · 1995
    Clinical trial130 participantsImmunity forMelatonin
  9. Influenza vaccine response is predicted by chronotype and differentially associated with pre- and post-vaccination sleep.
    Harrison EM; Lee RU; Porter CK; Isidean SD; Easterling AP; White L; Boulifard DA; DeTizio K; Liang Z; Sedegah M; Danko J; Glickman GL · Brain, behavior, & immunity - health · 2026
    Randomized trialImmunity forMelatonin
  10. Mechanisms and clinical evidence to support melatonin's use in severe COVID-19 patients to lower mortality.
    Tan DX; Reiter RJ · Life sciences · 2022
    Narrative review19 participantsImmunity forMelatonin
  11. Meta-analysis: melatonin for the treatment of primary sleep disorders.
    Ferracioli-Oda E; Qawasmi A; Bloch MH · PloS one · 2013
    Meta-analysis1,683 participants19 studies pooledSleep Support forMelatonin
  12. Melatonin treatment for age-related insomnia.
    Zhdanova IV; Wurtman RJ; Regan MM; Taylor JA; Shi JP; Leclair OU · The Journal of clinical endocrinology and metabolism · 2001
    Randomized trial30 participantsSleep Support forMelatonin
  13. The Effectiveness of Melatonin for Sleep Disturbances in Parkinson' Disease: Systematic Review and Meta-Analysis.
    Yousef O; Abouelmagd ME; Khaddam H; Shbani A; Yousef R; Meshref M; Hanafi I · Journal of sleep research · 2026
    Meta-analysis409 participants8 studies pooledSleep Support forMelatonin
  14. Nightly treatment of primary insomnia with prolonged release melatonin for 6 months: a randomized placebo controlled trial on age and endogenous melatonin as predictors of efficacy and safety.
    Wade AG; Ford I; Crawford G; McConnachie A; Nir T; Laudon M; Zisapel N · BMC medicine · 2010
    Randomized trial791 participantsSleep Support forMelatonin
  15. Effects of exogenous melatonin on sleep: a meta-analysis.
    Brzezinski A; Vangel MG; Wurtman RJ; Norrie G; Zhdanova I; Ben-Shushan A; Ford I · Sleep medicine reviews · 2005
    Meta-analysis284 participants8 studies pooledSleep Support forMelatonin