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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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Score93

Advanced enteric-coated softgels with Suntheanine and Melatonin for a gentle, efficient transition to sleep.

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

Score 93

Advanced enteric-coated softgels with Suntheanine and Melatonin for a gentle, efficient transition to sleep.

How scoring works
$26.57($0.59 per serving)
iHerb
$ 26.57
Vitacost
$ 26.57
Amazon
$ 26.57
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Analysis

Branded Suntheanine L-Theanine provides a high-quality foundation for relaxation without drowsiness. This is paired with melatonin and 5-HTP to support the body's natural sleep-wake signals.

Enteric coating on the softgels helps deliver the active ingredients efficiently while minimizing potential digestive upset. This focused approach is well-aligned for those seeking a clean and sophisticated nightly aid.

Naturally derived 5-HTP from Griffonia seeds serves as a supporting precursor for serotonin. Significant user feedback confirms the effectiveness of this specific triple-action combination.

Who is it for
  • People with sensitive digestion
  • Users seeking patented, high-purity ingredients
  • Individuals needing gentle sleep-wake cycle help
Best for
  • Stomach-friendly sleep support
  • Mental relaxation before bed
  • Consistent nightly routine

Pros

  • Uses high-quality Suntheanine
  • Enteric-coated for better tolerance
  • Easy-to-swallow softgels
  • Focused, effective ingredient trio

Cons

  • Low 5-HTP dose (30 mg)
  • Higher price for a specialized format

Warnings

  • Take only before bedtime
  • Keep softgels out of direct heat

Nutrient quality

93 Highest impact

Utilization of patented Suntheanine ensures a high standard of purity and standardized potency for the primary amino acid. The 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

86 Highest impact

Moderate pricing reflects the inclusion of high-quality patented ingredients and specialized delivery technology. It offers good value for individuals seeking a premium and reliable sleep aid.

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Goals

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

Standardized Suntheanine theanine is combined with melatonin and 5-HTP to promote both mental relaxation and a healthy sleep-wake cycle. The enteric-coated softgels are designed to optimize comfort and the delivery of these calming agents.

By addressing both the transition to rest and the underlying hormonal synthesis, the formula offers a dual approach to nighttime support. It appears well aligned for individuals looking for a high-quality, research-backed solution.

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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

Patented Suntheanine® L-Theanine provides a high-quality foundation for promoting a state of alert calm. The addition of 5-HTP and melatonin further supports the body's natural relaxation pathways and sleep-wake cycle regulation.

Enteric-coated softgels are used to optimize delivery and minimize potential digestive discomfort from active components. While the 5-HTP dose is modest, the overall synergy is well-aligned for those seeking a gentle transition to a relaxed state.

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

Suntheanine L-Theanine and 5-HTP appear well aligned for managing stress and supporting the neurotransmitter precursors necessary for a calm mind. These ingredients support the evening recovery window required for long-term neurological resilience.

Melatonin helps regulate the sleep-wake cycle, ensuring that the brain can perform critical maintenance tasks during the night. A softgel format provides a practical delivery method for these neuro-supportive nutrients.

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

Suntheanine L-Theanine is utilized to support alpha brain wave activity and a state of calm focus. The inclusion of 5-HTP and Melatonin suggests a primary focus on relaxation and supporting the sleep-wake cycle.

Enteric coating on the softgels may contribute to improved tolerance and absorption of the active components. While beneficial for nightly cognitive recovery, the sedative nature of the blend limits its use for active mental performance.

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

L-Theanine is the primary contributor in this blend, supporting a relaxed but attentive mental state. The use of a standardized form ensures consistent delivery of the active amino acid associated with cognitive performance.

5-HTP and Melatonin are included to support rest, which is essential for long-term cognitive resilience. The formula is best suited for nighttime use to ensure the brain is recovered for the following day's tasks.

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

Focus support is limited here as the formulation relies on melatonin and 5-HTP, which are traditionally used to encourage sleep and relaxation. Although the inclusion of patented Suntheanine at 200mg provides a quality source of the amino acid, its focus-enhancing properties are likely diminished by the sleep-inducing effects of the other actives.

The enteric-coated softgel format ensures the delivery of these calming agents, but the physiological outcome is more likely to be drowsiness than sustained attention. This combination appears better suited for evening winding-down rather than daytime mental tasks.

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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
Enteric-coated softgels provide a standardized serving of the active amino acid alongside 5-HTP and Melatonin. Formula is designed to support relaxation and nighttime rest.
Melatonin · 3 mg OverallScore61
C- Active Ingredient Quality & BioavailabilityB+ Dose, Safety & Label TransparencyF Value
Softgel delivery combined with l-theanine and 5-HTP supports a calm transition to rest. Enteric coating might assist with the gentle delivery of certain active components.
B+ Active Ingredient Quality & BioavailabilityD+ Dose, Safety & Label TransparencyF Value
Specialized enteric-coated softgels deliver a gentle 30mg dose of 5-HTP along with melatonin and L-theanine for targeted sleep aid. This delivery system prioritizes user comfort by minimizing potential stomach irritation.
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