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Tranquil Sleep

Natural Factors Stress-Relax
4.4
(2035 ratings)
Theanine 200 mg
Melatonin 3 mg
5-HTP 30 mg
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Score95

A high-quality sleep softgel using premium Suntheanine for deep relaxation.

How scoring works
Quantity:90 Softgel(s)(45 servings)
Goals:
Sleep Support
Stress Relief
Brain Health
Mood Support
Cognitive Support
Productivity Boost

Score 95

A high-quality sleep softgel using premium Suntheanine for deep relaxation.

How scoring works
$24.49($0.54 per serving)
iHerb
$ 26.57
Vitacost
$ 26.57
Amazon
$ 26.57
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Analysis

Tranquil Sleep uses Suntheanine, which is a very pure and well-studied form of L-theanine. This is paired with 5-HTP and melatonin to cover all the bases for a good night's rest. The combination helps you relax your mind while also signaling to your body that it is time to sleep.

Because it is a softgel, it is easy to swallow and can be absorbed quite well. It offers a 45-day supply, which is a good balance of quantity and price. This is a very high-quality option for people who have trouble staying asleep due to a busy mind.

Pros

  • Uses branded Suntheanine for better results
  • Easy-to-swallow softgels
  • Balanced 3-ingredient formula
  • Good 45-day supply

Cons

  • More expensive than basic sleep aids
  • Contains 5-HTP, which doesn't fit everyone
  • Softgels can sometimes stick together

Warnings

  • Consult a professional if taking serotonin medications
  • May cause heavy drowsiness
  • Avoid use with alcohol

Nutrient quality

96 Highest impact

Utilization of Suntheanine ensures high-purity support for alpha brain wave activity. The combination of melatonin and serotonin precursors provides a comprehensive approach to evening rest.

Ingredient transparency

100 Highest impact

The label clearly identifies each active ingredient and its specific dose per serving. Full transparency regarding the branded theanine source enhances consumer confidence.

Customer satisfaction

92 Highest impact

Broad user feedback indicates a high level of success with sleep latency and quality. A large volume of reviews provides strong statistical backing for the product's performance.

Value for money

88 Highest impact

The price per serving is justified by the combination of three distinct sleep-supporting actives. It offers good value for individuals seeking a multi-faceted nighttime formula.

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Goals

Impact
Highest effect
A+ Goal FitA+ Strength of SupportA CoverageA+ Formula Quality

Melatonin, L-theanine, and 5-HTP provide focused support for both sleep latency and mental relaxation. These ingredients are well-established for their ability to support the circadian rhythm and induce calm before bed.

Suntheanine and 5-HTP appear well aligned with the goal of improving sleep quality through neurotransmitter support. Melatonin contributes to a faster sleep onset for a comprehensive nighttime approach.

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Impact
Highest effect
A Goal FitA+ Strength of SupportB+ CoverageA+ Formula Quality

Suntheanine L-theanine and 5-HTP in this softgel formula provide a multi-faceted approach to promoting evening calm and emotional balance. These ingredients, along with melatonin, appear well-aligned for supporting restorative sleep, which is essential for a healthy stress response.

The inclusion of a branded, high-purity L-theanine ensures meaningful support for the induction of alpha brain waves associated with relaxation. This formulation offers excellent depth for the sleep-related stress pathway but is best utilized as a nighttime support tool.

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Impact
Highest effect
A Goal FitA+ Strength of SupportB+ CoverageA+ Formula Quality

Suntheanine L-Theanine and 5-HTP are combined with melatonin to support the brain's transition into restorative sleep. These standardized ingredients may contribute to healthy neurotransmitter balance for mental calm and focus.

A potent 200mg dose of Suntheanine supports the induction of alpha brain waves for a state of relaxation. The use of branded, standardized forms ensures high purity and active potency for cognitive recovery.

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Impact
Highest effect
A Goal FitA- Strength of SupportA- CoverageA+ Formula Quality

Suntheanine L-theanine at 200 mg and melatonin at 3 mg are combined to support evening relaxation and sleep onset. The formula also includes a small 30 mg dose of 5-HTP for foundational serotonin support.

The use of a patented theanine form ensures high purity and biological activity for promoting a calm mental state. While the 5-HTP dose is low, the overall combination appears well aligned with reducing nighttime stress.

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Impact
Highest effect
A Goal FitA+ Strength of SupportB CoverageA+ Formula Quality

Restorative sleep is supported to aid daytime mental clarity and focus.

Suntheanine and 5-HTP are combined with Melatonin to support a state of calm alertness and better rest.

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Impact
Highest effect
B- Goal FitA+ Strength of SupportC CoverageA+ Formula Quality

Suntheanine L-Theanine, 5-HTP, and Melatonin are combined in this softgel format to support foundational recovery through improved sleep. While these ingredients promote relaxation, they are less aligned with acute daytime productivity goals than stimulants or adaptogens.

The 200mg dose of premium theanine provides a high-quality strategy for mitigating the stress that can hinder mental clarity. This formula is best suited for evening use to facilitate the restorative rest necessary for high-level productivity the next day.

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Impact
Moderate effect
F Goal FitA Strength of SupportF CoverageD+ Formula Quality

Suntheanine L-theanine and 5-HTP combine with melatonin in these softgels to support nighttime relaxation and sleep quality. While 200mg of theanine is relevant for calm focus, the inclusion of melatonin is intended to induce drowsiness.

This formula is highly effective for evening recovery but is counterproductive for daytime mental focus and alertness. It is an excellent option for rest but lacks alignment with goals for sharpened cognitive performance during active hours.

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Ingredients

IngredientAmount per serving
Suntheanine L-Theanine
200 mg
5-HTP (Griffonia simplicifolia)
30 mg
Melatonin
3 mg
Gluten Free Adults 18–50 Dairy Free Sugar Free
Report overview
Theanine · 200 mg OverallScore100
A+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA+ Value
Tranquil Sleep uses 200mg of premium Suntheanine along with 5-HTP and melatonin to ensure deep nighttime calm. It is a high-quality choice for those seeking standardized ingredients to improve sleep quality.
Melatonin · 3 mg OverallScore61
C- Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyF Value
This premium softgel formula combines 3mg of melatonin with L-Theanine and 5-HTP for enhanced relaxation. It provides comprehensive support for those with sleep issues related to stress.
B- Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value
Tranquil Sleep is a softgel-based sleep aid that uses 5-HTP as a supporting ingredient for melatonin and theanine. Its low dose of 5-HTP makes it better suited as a sleep complex than a serotonin precursor supplement.
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