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Melatonin 5 mg

Natural Factors Stress-Relax
4.7
★ ★ ★ ★ ★
(3433 ratings)
Melatonin 5 mg
Product Image
Score83
Clear and focused 5 mg melatonin, with a higher-than-necessary dose for many users and no sleep-maintenance design.
How scoring works
Quantity:90 Tablet(s) • (90 servings)
Goals:
Sleep Support
Stress Relief

Score 83

Clear and focused 5 mg melatonin, with a higher-than-necessary dose for many users and no sleep-maintenance design.
How scoring works
$8.37($0.09 per serving)
iHerb
$ 8.37
Vitacost
$ 8.37
Amazon
$ 8.37
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Analysis

Melatonin has a clear role in circadian timing, and 5 mg is enough to produce a noticeable effect for many users. A lower amount may still be adequate, particularly for someone new to melatonin or sensitive to sedating effects.

The standard tablet appears designed for falling asleep rather than slow release through the night. Its simplicity is useful, but it does not address other sleep pathways or repeated waking.

Stress-relief relevance is secondary and comes mainly through improved sleep timing. The product suits adults who already know they need this amount more than people looking for a conservative starting option.

Who is it for
  • Adults who have tolerated 5 mg of melatonin before
  • People focused mainly on falling asleep
Best for
  • Sleep-onset support at a higher amount
  • A simple single-active tablet

Pros

  • Clearly lists 5 mg of melatonin
  • Uses one active ingredient
  • Provides 90 servings

Cons

  • The amount may exceed what many users need
  • No extended-release delivery is stated
  • Does not directly support daytime stress resilience

Warnings

  • Melatonin can cause drowsiness or next-day grogginess, so it should not be taken before driving or another task that requires alertness.
  • The 5 mg amount may increase vivid dreams or morning grogginess in sensitive users.

Nutrient quality

84 Highest impact

The chewable format is convenient but offers no overnight-release feature. The meaningful amount is somewhat higher than necessary for many users.

Ingredient transparency

84 Highest impact

The shown active ingredients have clear amounts and no proprietary blend hides a key dose. Daily directions and a complete inactive-ingredient list are not supplied.

Customer satisfaction

71 High impact

The supplied aggregate rating is favorable and supported by a very large review volume. Detailed feedback is unavailable, so repeated complaints and fit with the intended use cannot be judged.

Value for money

90 Highest impact

The formula provides strong practical value for its dose and delivery features. The focused active profile preserves category competitiveness.

Report analysis

Goals

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

The 5 mg melatonin amount directly supports sleep onset and circadian timing, though a lower amount may be sufficient for many users. The chewable tablet provides a clearly measured serving.

The amount is less conservative than lower-dose options and has no extended-release feature. The 5 mg serving may cause next-day drowsiness in dose-sensitive users, and a lower amount may be adequate.

Study evidence
Melatonin Supportive 181 studies
Stress Relief
Impact
Moderate effect
D Goal FitC+ Strength of SupportD- CoverageB+ Formula Quality

Melatonin may help when stress has disrupted sleep timing, but it does not directly build daytime emotional resilience. The 5 mg amount is above a low physiological amount and is clearly disclosed in one chewable tablet.

The single-ingredient formula is focused on circadian support rather than multiple stress pathways. Melatonin may cause morning grogginess or daytime sleepiness in sensitive users.

Study evidence
Melatonin Supportive 21 studies

Ingredients

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

The chewable tablet is designed mainly for sleep onset and has no supplied independent purity certification. The melatonin amount is above the physiological range but below a high dose. The low serving cost supports its value.

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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. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. The impact of oral melatonin on pain and anxiety reduction during venipuncture in pediatric patients: a double-blind randomized clinical trial.
    Rahafard S; Akbari Jokar Z; Hosseini SA; Alaee E · Annals of medicine and surgery (2012) · 2024
    Randomized trial202 participantsStress Relief forMelatonin
  8. Comparison of Effects of Melatonin and Gabapentin on Post Operative Anxiety and Pain in Lumbar Spine Surgery: A Randomized Clinical Trial.
    Javaherforooshzadeh F; Amirpour I; Janatmakan F; Soltanzadeh M · Anesthesiology and pain medicine · 2022
    Randomized trial90 participantsStress Relief forMelatonin
  9. Melatonin for pre- and postoperative anxiety in adults.
    Hansen MV; Halladin NL; Rosenberg J; Gögenur I; Møller AM · The Cochrane database of systematic reviews · 2015
    Meta-analysis774 participants12 studies pooledStress Relief forMelatonin
  10. Effects of melatonin intake on depression and anxiety in postmenopausal women: a systematic review and meta-analysis of randomised controlled trials.
    Demirhan Kayacik A; İlcioglu K · Archives of women's mental health · 2024
    Meta-analysis441 participants5 studies pooledStress Relief forMelatonin
  11. Premedication effect of melatonin on propofol induction dose for anesthesia, anxiety, orientation and sedation after abdominal surgery: a double-blinded randomized trial.
    Norouzi A; Fateh S; Modir H; Kamali A; Akrami L · Medical gas research · 2020
    Randomized trial88 participantsStress Relief forMelatonin