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Melatonin 2 mg

Metabolic Maintenance
4.6
★ ★ ★ ★ ★
(98 ratings)
Glycine 210 mg
Melatonin 2 mg
Product Image
Score79
A simple, well-focused 2 mg melatonin capsule with a token glycine addition. It fits sleep-onset and timing support better than all-night extended release.
How scoring works
Quantity:180 Capsule(s) • (180 servings)
Goals:
Sleep Support

Score 79

A simple, well-focused 2 mg melatonin capsule with a token glycine addition. It fits sleep-onset and timing support better than all-night extended release.
How scoring works
$30.50($0.16 per serving)
Pure Formulas
$ 35.50
iHerb
$ 30.50
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Analysis

Melatonin at 2 mg is the clear functional center and provides a practical amount for circadian timing and falling asleep. The simple formula is easy to understand and does not bury the main ingredient in a blend.

Glycine fits the sleep theme but reaches only 210 mg, far below a focused standalone amount. It should be viewed as a small addition rather than an equal partner to melatonin.

One capsule supplies the full serving and the bottle supports a long routine. Standard capsule delivery will not provide the prolonged release that some users seek for repeated nighttime waking.

Who is it for
  • Adults seeking a moderate melatonin amount
  • People who prefer a simple one-capsule bedtime formula
  • Users focused on sleep timing or falling asleep
Best for
  • Sleep-onset support
  • Circadian timing routines
  • Long-supply capsule use

Pros

  • Provides a practical 2 mg melatonin amount
  • Uses a simple transparent formula
  • Requires one capsule per serving
  • Includes a complementary glycine amount

Cons

  • Glycine is far below a standalone sleep amount
  • No sustained-release delivery
  • No premium source or purity detail is provided
  • Not designed specifically for nighttime awakenings

Warnings

  • Melatonin may cause next-day drowsiness, vivid dreams, or headache, especially until individual sensitivity is known.
  • Do not drive or operate equipment after taking the bedtime dose if alertness is reduced.
  • Alcohol, sleep medicines, benzodiazepines, and other sedatives may intensify melatonin-related drowsiness.

Nutrient quality

81 Highest impact

Melatonin reaches a practical sleep-support amount in a simple formula. The glycine amount is too small to add strong independent sleep support.

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Ingredient transparency

79 High impact

Both active amounts are clear and no blend hides the formula. Release profile, capsule ingredients, and complete bedtime directions are not supplied.

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Customer satisfaction

69 High impact

The supplied satisfaction average is strong and has substantial supporting volume. No specific experience details are provided to assess repeated complaints or alignment with the intended use.

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Value for money

86 Highest impact

A practical melatonin amount and long supply provide strong everyday value. Underdosed glycine adds little, but it does not materially inflate the accessible serving cost.

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Goals

Sleep Support
Sleep Support
Impact
Highest effect
A+ Goal FitA+ Strength of SupportB CoverageA+ Formula Quality
Melatonin · 2 mgGlycine · 210 mg

Melatonin directly supports circadian timing and sleep onset at a practical amount. Glycine adds a small complementary calming component.

The formula is simple, transparent, and clearly designed for bedtime. Glycine is far below a stand-alone sleep amount, but it does not distract from the strong melatonin focus.

Study evidence
Glycine Supportive 3 studies
Melatonin Supportive 181 studies

Ingredients

IngredientAmount per serving
Melatonin
2 mg
Glycine
210 mg
Gluten Free Adults 18–50 Dairy Free
Report overview
Glycine · 210 mg OverallScore67
C+ Active Ingredient Quality & BioavailabilityC+ Dose, Safety & Label TransparencyB- Value

The explicitly listed glycine supports the sleep formula but is well below a standalone clinical dose. Capsule delivery is practical, although no premium purity standard is disclosed. Melatonin adds a relevant co-active and supports fair blended value. Melatonin may cause next-day drowsiness in sensitive users.

View ingredientView products
Melatonin · 2 mg OverallScore64
F Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyC Value

The 2 mg amount sits within the range most aligned with natural circadian signaling. Capsule delivery offers standard absorption, but it does not provide sustained release. The serving cost is slightly above the market median, with modest added value from glycine.

View ingredientView products
Loading alternative details
77 Performance

R.E.M. Maintenance

Metabolic Maintenance
The combination retains melatonin and raises glycine from 210 mg to 3,500 mg, while also adding magnesium glycinate, inositol, and 5-HTP for broader sleep support. It is a much more complex formula and carries more interaction considerations, so it suits people specifically seeking a multi-ingredient option.
88 Performance

Melatonin 1.0 mg Orange Flavor

Source Naturals Sleep Science
A 1 mg melatonin amount offers a simpler, lower-dose approach with stronger overall quality and sleep assessments in the supplied data. It omits glycine, but avoids presenting a small glycine amount as a meaningful part of the formula.
87 Performance

Melatonin Lozenges 3 mg

Life Extension
A 3 mg melatonin lozenge provides a higher melatonin amount and strong sleep-goal alignment in a fast-dissolving format. It lacks glycine and may be more melatonin than some people need, so dose preference matters.
87 Budget

Melatonin 1 mg

Nature's Bounty
A 1 mg melatonin amount provides a lower-dose sleep option at a substantially lower serving cost. It leaves out glycine, but the supplied analysis still shows solid sleep alignment.
84 Budget

Melatonin 1 mg

Spring Valley
The 1 mg melatonin serving is a simpler and more economical choice for people who prefer less melatonin. Glycine is absent, while the supplied sleep assessment remains strong.
85 Budget

Melatonin 1 mg

Swanson Premium Brand
A focused 1 mg melatonin formula lowers both the dose and serving cost while retaining strong sleep-goal alignment. It does not include glycine, so it is narrower than the original.
86 Value

Melatonin Lozenge 2.5 mg

Nature's Way
The 2.5 mg melatonin lozenge stays close to the original dose while providing strong sleep alignment at a lower serving cost. Glycine is absent, but the focused formula offers better value when melatonin is the main goal.
86 Value

Melatonin 3 mg Fast Dissolve Strawberry Natural Flavor

Natrol
A 3 mg fast-dissolve serving supplies more melatonin and has strong sleep alignment while remaining economical. It does not include glycine, and the higher dose may not suit people who prefer the original 2 mg amount.
83 Value

Melatonin 3 mg

NOW
The 3 mg melatonin formula adds 3 mg of vitamin B6 and costs less per serving. Its sleep assessment is solid, but the formula omits glycine and uses a higher melatonin dose.
Report alternatives

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. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  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