Natural Factors RegenerLife, Sleep Better with Melatonin, L-Theanine & Botanicals, 60 Tri-Layer Tablets supplement bottle
Natural Factors

RegenerLife, Sleep Better with Melatonin, L-Theanine & Botanicals, 60 Tri-Layer Tablets

What We Researched
7 active ingredients analyzed · 13 inactive ingredients decoded · 5 brand certifications checked · 2 retailers compared · Last updated: Mar 2026
76
Product Score Fair
88
Brand Score Good

Product Analysis

Transparency Excellent

Supplement Facts

IngredientAmount% DV
Calcium (as dicalcium phosphate dihydrate) 90 mg 7%
L-Theanine 200 mg **
Passionflower (Passiflora incarnata)4:1 Extract (herb top) 20 mg **
Valerian (Valeriana officinalis)4:1 Extract (root and rhizome)(standardized to 0.25% valerenic acid)(equivalent to 80 mg dried root and rhizome) 20 mg **
5-HTP (Griffonia simplicifolia) (seed) 15 mg **
Hops (Humulus lupulus)5:1 Extract (strobile) 10 mg **
Melatonin (non-animal source) 10 mg **
Bioavailability Good

Absorption Rating

  • Calcium (as dicalcium phosphate dihydrate) Fair
  • L-Theanine Good
  • Passionflower (Passiflora incarnata)4:1 Extract (herb top) Good
  • Valerian (Valeriana officinalis)4:1 Extract (root and rhizome)(standardized to 0.25% valerenic acid)(equivalent to 80 mg dried root and rhizome) Good
  • 5-HTP (Griffonia simplicifolia) (seed) Good
  • Hops (Humulus lupulus)5:1 Extract (strobile) Poor
  • Melatonin (non-animal source) Fair
Other Ingredients Excellent

Fillers & Additives

  • Dicalcium Phosphate Dihydrate
  • Microcrystalline Cellulose
  • Turmeric powder (color)
  • Hypromellose
  • Hydroxypropyl Cellulose
  • Magnesium Stearate (Vegetable Grade)
  • Stearic Acid
  • Croscarmellose Sodium
  • Silica
  • Gum Acacia
  • Vegetable Juice (Color)
  • Maltodextrin
  • Citric Acid
Efficacy Poor

Dosage Analysis

  • Calcium (as dicalcium phosphate dihydrate) 90 mg Under-dosed
  • L-Theanine 200 mg Effective
  • Passionflower (Passiflora incarnata)4:1 Extract (herb top) 20 mg Under-dosed
  • Valerian (Valeriana officinalis)4:1 Extract (root and rhizome)(standardized to 0.25% valerenic acid)(equivalent to 80 mg dried root and rhizome) 20 mg Under-dosed
  • 5-HTP (Griffonia simplicifolia) (seed) 15 mg Under-dosed
  • Melatonin (non-animal source) 10 mg Effective

Supplement Facts

Ingredient Amount % Daily Value
Calcium (as dicalcium phosphate dihydrate) 90 mg 7%
L-Theanine 200 mg **
Passionflower (Passiflora incarnata)4:1 Extract (herb top) 20 mg **
Valerian (Valeriana officinalis)4:1 Extract (root and rhizome)(standardized to 0.25% valerenic acid)(equivalent to 80 mg dried root and rhizome) 20 mg **
5-HTP (Griffonia simplicifolia) (seed) 15 mg **
Hops (Humulus lupulus)5:1 Extract (strobile) 10 mg **
Melatonin (non-animal source) 10 mg **

Other Ingredients

Inactive ingredients used in manufacturing. All rated for safety.

Dicalcium Phosphate Dihydrate Generally_safe

It is used as a filler or bulking agent.

Microcrystalline Cellulose Safe

Adds bulk to small-dose supplements to make tablets/capsules a manageable size.

Turmeric powder (color) Unknown
Hypromellose Safe

Forms vegetarian capsule shells. Dissolves easily in the stomach.

Hydroxypropyl Cellulose Safe

Binds tablet ingredients and can form tablet coatings.

Magnesium Stearate (Vegetable Grade) Generally_safe

It is used to prevent ingredients from sticking to manufacturing equipment.

Stearic Acid Safe

Helps ingredients flow smoothly through manufacturing equipment.

Croscarmellose Sodium Safe

Helps tablets break apart and dissolve quickly in the stomach.

Silica Safe

Prevents ingredients from clumping and improves powder flow.

Gum Acacia Safe

It is used as a thickener, binder, or emulsifier.

Vegetable Juice (Color) Safe

It is added to supplements to provide color.

Maltodextrin Generally_safe

Helps carry and stabilize active ingredients. Provides bulk.

Citric Acid Safe

Adds tartness and acts as a natural preservative. Also aids in ingredient stability.

Price Comparison

Price History

Tracked across major retailers. Updated periodically.

$21$20$19$18$17 Mar 12 $19.00
iHerb

Prices shown at time of last check. Click a retailer to see current price. GoodSupp is not affiliated with any retailer.

Brand Trust Report
Natural Factors

Founded 1950 · Coquitlam, British Columbia, Canada · 390 products · naturalfactors.com

Certifications

5 certifications
B Corp Certified Verified Source
Usp Verified Verified Source
Fda Gmp Inspections Verified Source
Non Gmo Project Verified Source
Usda Organic Verified Source

Transparency

4 claims
Third Party Testing Claim — Verified Source
Testing Lab Disclosure — Verified Source
In House Testing — Verified Source

Violation History

5 incidents
Prop 65 Lead2025-10-31Source
Recall Hi Potency B Complex, RevitalX, Super Multi® IRON FREE2024-07-19Source
Lawsuit Products labeled as containing glucosamine sulfate did not contain the ingredient.2021Source
Prop 65 Lead2016-01-13Source
Recall Natural Factors L-Arginine 500mg2006-04-05Source
Related Supplements
Frequently Asked Questions
Is Natural Factors RegenerLife, Sleep Better with Melatonin a good supplement?

Natural Factors RegenerLife, Sleep Better with Melatonin, L-Theanine & Botanicals, 60 Tri-Layer Tablets received a product quality score of 76/100 in GoodSupp's independent analysis, suggesting some areas that could be improved. The product contains 7 active ingredients Of the 13 inactive ingredients, 9 are rated safe and 0 are flagged for review. The manufacturer, Natural Factors, holds a brand trust score of 88/100 with 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project.

What are the ingredients in Natural Factors RegenerLife, Sleep Better with Melatonin?

Natural Factors RegenerLife, Sleep Better with Melatonin contains 7 active ingredients: Calcium (as dicalcium phosphate dihydrate) (90 mg), L-Theanine (200 mg), Passionflower (Passiflora incarnata)4:1 Extract (herb top) (20 mg), Valerian (Valeriana officinalis)4:1 Extract (root and rhizome)(standardized to 0.25% valerenic acid)(equivalent to 80 mg dried root and rhizome) (20 mg), 5-HTP (Griffonia simplicifolia) (seed) (15 mg), Hops (Humulus lupulus)5:1 Extract (strobile) (10 mg), and 1 more. Each ingredient's dosage, form, and safety rating is analyzed independently in GoodSupp's full product breakdown.

Is Natural Factors RegenerLife, Sleep Better with Melatonin safe to take?

Natural Factors RegenerLife, Sleep Better with Melatonin, L-Theanine & Botanicals, 60 Tri-Layer Tablets has been analyzed for ingredient safety across all its components. Always consult your healthcare provider before starting any new supplement, especially if you take medications or have underlying health conditions.

Is Natural Factors a trustworthy supplement brand?

Natural Factors receives a brand trust score of 88/100 based on GoodSupp's independent analysis of certifications, regulatory history, and transparency practices. Founded in 1950 and headquartered in Coquitlam, British Columbia, Canada, the company offers 390 products in their lineup. They hold 5 verified certifications including B Corp Certified, Usp Verified, Fda Gmp Inspections, Non Gmo Project. Third-party certifications are independently verified and indicate the brand meets specific quality, purity, and manufacturing standards. Note: Natural Factors has 5 historical regulatory incidents on record, which are factored into the trust score.

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Disclaimer: GoodSupp provides independent supplement quality analysis for informational purposes only. Scores are generated algorithmically based on ingredient profiles, brand certifications, and public records. This is not medical advice. Always consult a healthcare professional before starting any supplement regimen. Product data is sourced from manufacturer labels and public databases. GoodSupp is not affiliated with any supplement brand.