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Melatonin 5 mg

Nutricost
4.7
★ ★ ★ ★ ★
(585 ratings)
Melatonin 5 mg
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Score80
The 5 mg capsule provides higher sleep-onset support, with next-morning effects as the main trade-off.
How scoring works
Quantity:240 Capsule(s) • (240 servings)
Goals:
Sleep Support

Score 80

The 5 mg capsule provides higher sleep-onset support, with next-morning effects as the main trade-off.
How scoring works
$10.00($0.04 per serving)
Walmart
$ 10.00
iHerb
$ 0.00
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Analysis

Melatonin is supplied at 5 mg in one capsule. The amount is higher than many users need and raises the chance of morning effects. The clearly listed amount makes dose comparison simple.

The main benefit is support for circadian timing and falling asleep when a delayed schedule is the problem. The immediate-release format is aimed at sleep onset rather than all-night maintenance. It does not add a separate pathway for physical tension or daytime stress resilience.

A 240-serving bottle offers an unusually long and economical routine. The single-active formula keeps the purpose and serving easy to assess. Melatonin can still cause morning drowsiness or vivid dreams, especially when taken too late.

Who is it for
  • Adults who already know they tolerate higher-dose melatonin
  • People who prefer a simple capsule
Best for
  • Sleep-onset support
  • Circadian-timing routines

Pros

  • 5 mg melatonin amount is clearly listed
  • One-unit serving is simple
  • 240 servings per container
  • Focused single-active formula

Cons

  • No sustained-release feature for nighttime awakenings
  • Dose may be more than sensitive users need
  • No separate relaxation pathway

Warnings

  • The 5 mg melatonin serving may cause noticeable drowsiness, vivid dreams, headache, or dizziness.
  • Do not drive or perform safety-sensitive work after taking melatonin or the next morning if alertness is impaired.
  • Alcohol, sleep medicines, and other sedatives can add to melatonin-related drowsiness.

Nutrient quality

75 High impact

The capsule provides straightforward immediate-release delivery. The high 5 mg melatonin amount is higher than needed for many people despite supporting routine sleep-onset use.

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Ingredient transparency

84 Highest impact

Every supplied active ingredient has a specific amount and understandable name. Serving count is available, but intake directions and inactive ingredients are absent from the supplied label details.

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Customer satisfaction

67 High impact

The supplied aggregate rating is strong and the review volume adds useful statistical stability. No review text is provided to check recurring complaints or product-specific experiences.

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Value for money

92 Highest impact

Serving economics appear very strong relative to the clearly disclosed melatonin amount. The simple formula avoids paying for decorative active ingredients.

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Goals

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

Melatonin at 5 mg directly supports sleep onset and circadian timing. The capsule provides a clearly disclosed amount, though many users may need less.

The single active does not cover separate relaxation or mineral pathways. The dose may increase morning grogginess or vivid dreams, especially in sensitive users.

Study evidence
Melatonin Supportive 181 studies

Ingredients

IngredientAmount per serving
Melatonin
5 mg
Gluten Free Adults 18–50
Report overview
Melatonin · 5 mg OverallScore65
F Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyA+ Value

A single capsule provides a clearly labeled 5 mg dose, though this amount may be more than some users need and can increase next-morning grogginess. Standard immediate-release delivery favors sleep onset rather than all-night maintenance. The very low serving cost is a clear strength, but no independent purity certification is provided.

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Sources

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

  1. 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
  2. Exogenous melatonin as a treatment for secondary sleep disorders: A systematic review and meta-analysis.
    Li T; Jiang S; Han M; Yang Z; Lv J; Deng C; Reiter RJ; Yang Y · Frontiers in neuroendocrinology · 2019
    Meta-analysis205 participants7 studies pooledSleep Support forMelatonin
  3. Efficacy of melatonin with behavioural sleep-wake scheduling for delayed sleep-wake phase disorder: A double-blind, randomised clinical trial.
    Sletten TL; Magee M; Murray JM; Gordon CJ; Lovato N; Kennaway DJ; Gwini SM; Bartlett DJ; Lockley SW; Lack LC; Grunstein RR; Rajaratnam SMW; Delayed Sleep on Melatonin (DelSoM) Study Group · PLoS medicine · 2019
    Randomized trial116 participantsSleep Support forMelatonin
  4. 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
  5. Efficacy on sleep parameters and tolerability of melatonin in individuals with sleep or mental disorders: A systematic review and meta-analysis.
    Salanitro M; Wrigley T; Ghabra H; de Haan E; Hill CM; Solmi M; Cortese S · Neuroscience and biobehavioral reviews · 2022
    Meta-analysis1,998 participants34 studies pooledSleep Support forMelatonin
  6. Effects of Melatonin Treatment on Perioperative Sleep Quality: A Systematic Review and Meta-Analysis with Trial Sequential Analysis of Randomized Controlled Trials.
    Gao Y; Chen X; Zhou Q; Song J; Zhang X; Sun Y; Yu M; Li Y · Nature and science of sleep · 2022
    Meta-analysis725 participants10 studies pooledSleep Support forMelatonin
  7. Effects of melatonin on postoperative sleep quality: a systematic review, meta-analysis, and trial sequential analysis.
    Tsukinaga A; Mihara T; Takeshima T; Tomita M; Goto T · Canadian journal of anaesthesia = Journal canadien d'anesthesie · 2023
    Meta-analysis516 participants8 studies pooledSleep Support forMelatonin
  8. Unintended consequences: college students' melatonin usage, sleep disturbance, and depressive symptoms.
    Peltz JS; Rogge R · Sleep and biological rhythms · 2025
    Cohort study331 participantsSleep Support forMelatonin
  9. 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
  10. 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
  11. 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