Product Image

5-HTP 5-Hydroxytryptophan 100 mg

Natural Factors Stress-Relax
4.7
★ ★ ★ ★ ★
(960 ratings)
5-HTP 100 mg
Product Image
Score94

A high-value 120-count bottle of time-release 100 mg 5-HTP for consistent, long-term support.

How scoring works
Quantity:120 Tablet(s) • (120 servings)
Goals:
Sleep Support
Mood Support
Weight Loss
Stress Relief

Score 94

A high-value 120-count bottle of time-release 100 mg 5-HTP for consistent, long-term support.

How scoring works
$34.97($0.29 per serving)
Amazon
$ 34.97
Vitacost
$ 34.97
iHerb
$ 34.97
Report prices

Analysis

Sustained-release technology delivers 100 mg of botanical 5-HTP gradually to support consistent serotonin levels. The large 120-count bottle offers an impressive four-month supply, making it a very efficient option for long-term daily use. Including calcium phosphate provides structural integrity to the tablet and adds a foundational mineral base.

Controlled delivery is designed to minimize potential digestive discomfort while ensuring the active ingredient is available over several hours. This approach is well suited for individuals seeking steady emotional resilience and better sleep maintenance. A minimalist ingredient profile avoids the risk of multi-ingredient interactions common in larger blends.

Providing a reliable and gradual dose makes it a refined tool for maintaining neurotransmitter balance throughout the day or night. Sourcing from natural Griffonia simplicifolia ensures the quality and origin of the primary amino acid. The specialized tablet format is practical for those who prioritize steady metabolic availability.

Who is it for
  • Long-term daily supplement users
  • Individuals seeking bulk value
  • Those wanting sustained-release benefits
Best for
  • Steady mood maintenance
  • Overnight rest and sleep quality
  • Long-term affordability

Pros

  • Efficient 120-count supply
  • Sustained-release technology
  • Standard 100 mg dosage
  • Includes minor mineral support

Cons

  • Large bottle takes up storage space
  • Requires swallowing caplets
  • No additional conversion cofactors

Warnings

  • Consult a professional before use with SSRIs
  • Do not chew or crush sustained-release caplets
  • Monitor for drowsiness

Nutrient quality

93 Highest impact

Controlled-release technology optimizes the delivery of 100 mg of 5-HTP, supporting consistent serotonin levels over time. The inclusion of calcium phosphate provides minor nutritional support while ensuring the stability of the sustained-release caplet.

Ingredient transparency

100 Highest impact

Clearly listed active amounts and botanical sources ensure that consumers have full visibility into the formula's potency. Disclosure of the time-release mechanism and clear usage instructions contribute to a highly transparent labeling experience.

Customer satisfaction

92 Highest impact

Strong average ratings and a healthy review volume suggest that users find the sustained-release format to be both effective and dependable. Positive feedback regarding long-term mood and sleep stability indicates the product reliably meets user expectations.

Value for money

91 Highest impact

A price of $0.29 per serving provides good value for a bulk-sized supply of a specialized timed-release supplement. The combination of sustained delivery technology and reliable botanical sourcing justifies the cost for consistent daily use.

Report analysis

Goals

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

Utilizing time-release delivery for a standard 100 mg dose of 5-HTP supports the consistent production of sleep-regulating hormones. This format is particularly well-aligned for those seeking support for staying asleep throughout the night.

Natural plant-derived sources ensure high purity and consistent potency in each serving. The simple formula avoids common interactions and fillers, making it a focused and reliable option for evening use.

View goal →
Impact
Highest effect
A Goal FitA+ Strength of SupportC CoverageA Formula Quality

Supplying 100mg of plant-derived 5-Hydroxytryptophan in a time-release caplet supports a steady release of the serotonin precursor for balanced neurochemistry. This delivery method may help minimize the common digestive side effects associated with rapid absorption of this amino acid.

Focusing on a single, high-quality ingredient provides a targeted intervention for those specifically looking to support their serotonin levels. The simple profile is free of complex blends, making it easy to incorporate into a broader wellness routine.

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

5-HTP is delivered in 100 mg time-release caplets to support sustained satiety and help manage hunger signals. This gradual delivery format targets natural serotonin levels to curb cravings and improve consistency with calorie-restricted plans.

Increased serotonin availability supports feelings of fullness and helps reduce the tendency toward stress-induced eating. Natural Griffonia simplicifolia seed extract provides a reliable botanical source in a specialized delivery format for steady metabolic support.

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

A 100 mg dose of 5-HTP naturally derived from Griffonia seed supports serotonin production for balanced mood and emotional resilience. Time-release technology provides a steady supply of the active amino acid to maintain a calm state throughout the day.

Standardized seed extract ensures consistent potency in every sustained-release caplet. This clean formulation is designed for individuals seeking straightforward and high-quality support without the complexity of a multi-ingredient blend.

View goal →

Ingredients

IngredientAmount per serving
Calcium (Dicalcium Phosphate)
70 mg
5-HTP (Griffonia simplicifolia)
100 mg
Gluten Free Adults 18–50 Vegan Dairy Free Sugar Free Vegetarian
Report overview
B+ Active Ingredient Quality & BioavailabilityA+ Dose, Safety & Label TransparencyA- Value
Plant-derived 5-HTP is provided in a time-release format for gradual delivery throughout the day. The large bottle size offers a convenient supply of a standard 100mg dose.
Report alternatives