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Tranquil Sleep

Natural Factors Stress-Relax
4.4
(2092 ratings)
Theanine 200 mg
Melatonin 3 mg
5-HTP 30 mg
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Score92

Trial-sized pack of enteric-coated sleep softgels with high-quality Suntheanine and Melatonin.

How scoring works
Quantity:45 Softgel(s)(22 servings)
Goals:
Sleep Support
Mood Support
Stress Relief
Brain Health
Cognitive Support
Productivity Boost

Score 92

Trial-sized pack of enteric-coated sleep softgels with high-quality Suntheanine and Melatonin.

How scoring works
$13.97($0.63 per serving)
iHerb
$ 13.97
Amazon
$ 13.97
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Analysis

Standardized Suntheanine and melatonin work together to support a peaceful transition into sleep. This 45-count bottle offers a shorter-term supply ideal for travel or initial testing of the formula.

Enteric coating on the softgels is intended to optimize delivery and reduce sensitivity to the active components. This focused construction addresses multiple aspects of the evening rest cycle.

Naturally derived 30 mg of 5-HTP provides a gentle foundation for serotonin synthesis. This approach appears well-aligned for those seeking a high-quality, research-backed nightly solution.

Who is it for
  • Travelers needing a compact sleep aid
  • First-time users testing the formula
  • People who prefer softgels over chewables
Best for
  • Occasional sleep help
  • Travel-friendly rest support
  • Assessing personal response

Pros

  • Enteric-coated for stomach comfort
  • Compact 45-count size
  • Uses patented Suntheanine
  • High review ratings

Cons

  • Lower value than the bulk size
  • Only 22 servings per bottle

Warnings

  • Monitor for morning grogginess
  • Keep away from children

Nutrient quality

93 Highest impact

Utilization of patented theanine ensuring consistent quality and purity for the primary relaxation agent. Enteric-coated delivery system enhances user comfort by managing the release of active ingredients.

Ingredient transparency

99 Highest impact

Labeling clearly identifies the use of patented ingredients and provides specific amounts for every active component. Transparency is high, allowing for accurate assessment of the formula's quality and potency.

Customer satisfaction

92 Highest impact

Solid average ratings and a large review base indicate that consumers find this combination effective for supporting relaxation and sleep. Feedback highlights the success of the standardized formula for consistent results.

Value for money

83 Highest impact

Pricing per serving is on the higher end of the category, reflecting the inclusion of premium patented ingredients and specialized delivery technology. It offers good value for individuals seeking a high-quality and reliable sleep aid.

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Goals

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

Suntheanine theanine, melatonin, and a small amount of 5-HTP are housed in enteric-coated softgels to support a peaceful transition to rest. This formula targets both the mental relaxation required to fall asleep and the biological signals that govern the sleep-wake cycle.

High-purity ingredients and optimized delivery make it a suitable choice for consistent nighttime support. It provides a research-backed combination that appears well aligned for individuals with diverse sleep needs.

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

Enteric-coated softgels provide a blend of theanine, 5-HTP, and melatonin to support relaxation and a steady emotional state. This formulation is designed to minimize digestive discomfort while delivering key neurotransmitter precursors.

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

L-Theanine and 5-HTP are combined in enteric-coated softgels to support immediate calm and healthy serotonin levels. This delivery system is designed to improve comfort and bioavailability for those navigating high-stress periods.

The use of Suntheanine® provides a standardized and highly pure form of the calming amino acid. While the 30 mg dose of 5-HTP is gentle, the overall formula appears well-aligned for those seeking multi-mechanism support in a small-serving format.

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

Suntheanine L-Theanine and 5-HTP provide a source of amino acids that support the neurotransmitter pathways required for mental relaxation. These ingredients work together to help manage the stress response, which is foundational for cognitive health.

Melatonin is included at a physiological dose to support the restorative sleep cycles necessary for neurological resilience. The softgel delivery form ensures a straightforward way to incorporate these recovery-focused nutrients into a nightly routine.

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Impact
High effect
C- Goal FitA Strength of SupportD CoverageB+ Formula Quality

Suntheanine L-Theanine and 5-HTP provide targeted support for a calm mental state, while Melatonin aids in sleep regulation. Enteric-coated softgels are designed to enhance the delivery and tolerance of these relaxation-focused ingredients.

Formula composition targets evening rest, which may support long-term cognitive health through improved sleep quality. It is less suitable for individuals seeking immediate improvements in focus, memory, or mental energy during the day.

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Impact
High effect
C Goal FitA- Strength of SupportD CoverageC Formula Quality

L-Theanine is provided in a standardized form to support focus and reduce the mental strain of stress. This amino acid is often used to promote a state of relaxed wakefulness that is beneficial for productivity.

5-HTP and Melatonin shift the focus of this formula toward sleep and mental restoration. Recovering from cognitive fatigue through better rest is the primary way this blend may contribute to long-term mental performance.

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

Focus support is limited as this blend primarily utilizes melatonin and 5-HTP to facilitate sleep. While the 200mg dose of L-theanine may contribute to a sense of calm, the sleep-inducing properties of the other ingredients are likely to impair alertness and concentration during the day.

Enteric-coated softgels provide efficient delivery of the ingredients, yet the formulation remains heavily weighted toward relaxation. This selection appears better aligned with nighttime recovery than with the demands of sustained mental focus.

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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
Formula provides a standardized serving of the active amino acid alongside 5-HTP and Melatonin in a softgel format. Smaller bottle size offers a convenient trial option for those seeking sleep support.
Melatonin · 3 mg OverallScore61
C- Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyF Value
Smaller bottle size offers a convenient trial of the l-theanine and melatonin blend for occasional sleep issues. Softgel form ensures a smooth swallowing experience.
B+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value
Enteric-coated softgels offer 30mg of naturally sourced 5-HTP in a smaller bottle for travel or initial testing. Specialized delivery helps minimize digestive upset while providing a gentle dose for sleep support.
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