Natural Factors Stress-Relax

27 products

About the brand

Stress-Relax is Natural Factors' specialty supplement line, with products such as L-theanine, ashwagandha, melatonin, saffron, and sleep-oriented formulas. Natural Factors describes itself as a Canadian, family-run natural health products business operating for about 60 years.

Manufacturing

Natural Factors says it controls manufacturing from start to finish in facilities designed to manage water quality, air filtration, and cross-contamination risks; this is a parent-company statement.

Testing & transparency

Natural Factors says it tests ingredients for identity, potency, and purity and conducts in-house testing. It also describes ISURA third-party testing as part of its broader quality program; this does not establish that every Stress-Relax product carries a certification.

Brand analysis

out of 100

Natural Factors Stress-Relax shows strong customer validation and established coverage of several supplement categories. Confidence in quality and value remains limited because certification, testing, dosage, and policy details are not included.

Our brand assessment, separate from the median product score. Updated Aug 11, 2026.

Quality Assurance and Safety Record

Quality assurance remains uncertain because certifications, testing practices, and manufacturing controls are not shown. No negative safety record is supplied, but that absence supports only a cautious baseline.

Portfolio Quality Signals

Complete portfolio analysis coverage offers some visibility, but ingredient forms and doses are absent. The collection mix spans several products, yet direct product evidence is insufficient to confirm consistent quality.

Customer Validation

Strong customer validation comes from strong ratings and complete review coverage. Review recency and authenticity signals are missing, which limits confidence in the aggregate picture.

Value Positioning

Visible pricing appears moderate across the catalog. Missing dose and testing detail prevents a firm judgment about effective value.

Brand Execution

The collection mix appears broad, which gives the catalog reach but a less distinct shape. Product names, label presentation, and serving communication are not supplied, so execution cannot be confirmed directly.

Brand Trust Signals

Review activity suggests the brand has a real commercial footprint. Ownership, support, policy, and sales-channel details are not supplied, leaving business-level trust only partly established.

Market Presence

The catalog has an established presence across several supplement categories without relying on size alone. Its collection mix appears commercially credible, though aggregate information cannot show how durable that breadth is.

Country of origin: Canada
Parent company: Natural Factors
Specialties: stress-support supplements, sleep-support supplements, herbs and amino acids

Category
Other Nutrients 16 scored	17	82
Amino Acids 11 scored	11	80
Minerals 6 scored	6	80
Botanicals 2 scored	2	Not enough data
Vitamins 1 scored	1	Not enough data

Ingredients

Showing 1–10 of 10 ingredientsMost products first

Collection
Melatonin 11 scored	12	82
5-HTP 8 scored	8	80
Theanine 8 scored	8	81
GABA 5 scored	5	82
Calcium 3 scored	3	79
Magnesium 3 scored	3	81
Ashwagandha 2 scored	2	Not enough data
Eleuthero 1 scored	1	Not enough data
Rhodiola 1 scored	1	Not enough data
Vitamin B6 1 scored	1	Not enough data

27 of 27 products have a collection match. A product can appear in more than one group.

Median scores are out of 100, use the current product scores and need at least 3 scored products. Groups with fewer scores show “Not enough data”.

Products from Natural Factors Stress-Relax

Name	Score	Qnt	Srv	Form	Price	Price serving	Ingredients
Magnesium Citrate Tropical Drink MixNatural Factors Stress-Relax	90	8	75	Ounce(s)	$20.97	$0.27	Magnesium
Melatonin 3 mgNatural Factors Stress-Relax	87	90	90	Tablet(s)	$5.57	$0.06	Melatonin
Melatonin 3 mgNatural Factors Stress-Relax	87	180	180	Tablet(s)	$9.77	$0.05	Melatonin
Ashwagandha SensorilNatural Factors Stress-Relax	86	60	60	Capsule(s)	$13.27	$0.22	Ashwagandha
Pharma GABA 250 mgNatural Factors Stress-Relax	85	60	60	Capsule(s)	$34.97	$0.58	GABA
Suntheanine L-Theanine 125 mgNatural Factors Stress-Relax	84	60	30	Capsule(s)	$18.87	$0.62	Theanine
Melatonin 1 mgNatural Factors Stress-Relax	84	90	90	Tablet(s)	$4.87	$0.05	Melatonin
Melatonin 1 mgNatural Factors Stress-Relax	84	180	180	Tablet(s)	$8.37	$0.04	Melatonin
Pharma GABA 100 mgNatural Factors Stress-Relax	84	60	30	Capsule(s)	$19.59	$0.65	GABA
Melatonin 5 mgNatural Factors Stress-Relax	83	90	90	Tablet(s)	$8.37	$0.09	Melatonin
Tranquil SleepNatural Factors Stress-Relax	82	90	45	Softgel(s)	$26.57	$0.59	Theanine 5-HTP Melatonin
Pharma GABA 100 mgNatural Factors Stress-Relax	82	120	60	Tablet(s)	$40.59	$0.67	GABA
Tranquil SleepNatural Factors Stress-Relax	82	45	22	Softgel(s)	$13.97	$0.63	Theanine 5-HTP Melatonin
Suntheanine L-Theanine 100 mgNatural Factors Stress-Relax	81	120	60	Tablet(s)	$35.67	$0.59	Theanine
Magnesium Citrate Berry Drink MixNatural Factors Stress-Relax	81	8	75	Ounce(s)	$20.97	$0.27	Magnesium

Manufacturing

Testing & transparency

Categories

Ingredients

Products from Natural Factors Stress-Relax