• Each capsule delivers 100 mg magnesium bisglycinate and 125 mg L-theanine, helping daily stress melt away with a relaxed, clear-headed feeling in about 30–40 minutes.
• Magnesium supports 300+ enzymatic reactions and helps maintain healthy bones, teeth, muscles, nerves, and energy metabolism.
• L-theanine crosses the blood-brain barrier to promote an awake, relaxed state, delivering calm focus within about 30 minutes.
• Vegetarian, non-GMO capsules that are gentle on the stomach, do not cause drowsiness, and support daily stress management without habit formation.
Popular Searches
Top Brands
Available in store
Natural Factors, Magnesium Bisglycinate 100mg plus L-Theanine 125mg, 90VCaps
Size
90
vegetarian capsules
UPC
627765028676
Best Before
03/2029
69 people have viewed this item in the last 7 days
About this item
Suggested Use
Recommended adult dose: All claims except promote relaxation: 1 capsule daily or as directed by a health care practitioner.
Promote relaxation: 2 capsules daily or as directed by a health care practitioner.
Promote relaxation: 2 capsules daily or as directed by a health care practitioner.
Ingredients
Each vegetarian capsule contains:
L-theanine
125
mg
Magnesium (bisglycinate)
100
mg
Non-medical Ingredients:
Vegetarian capsule (carbohydrate gum [cellulose], purified water), rice flour, vegetable grade magnesium stearate (lubricant), stearic acid, silica.
Description
Let your daily stress melt away with our easy-to-absorb combination of magnesium and L-theanine. Natural Factors Magnesium Bisglycinate plus L-Theanine can help you feel relaxed and clear-headed while providing a source of magnesium for proper muscle function.
Magnesium is an essential mineral required as an enzyme cofactor in more than 300 metabolic reactions throughout the body. It helps maintain healthy bones, teeth, muscles, and nerves and is needed to metabolize nutrients into energy. L-theanine is found naturally in green tea and has long been known to promote a sense of calm in tea drinkers. L-theanine is absorbed quickly and transported directly to the brain, where it stimulates the alpha brain waves associated with an awake yet relaxed state of mind. It provides a noticeable effect within 30–40 minutes of supplementation, helping to relieve symptoms of occasional and daily stress, calm the nerves, and focus the mind.
Magnesium plus L-Theanine is made with magnesium bisglycinate, a form that is gentle on the stomach and does not require stomach acid for absorption. Each vegetarian capsule contains 100 mg of magnesium and 125 mg of L-theanine, allowing for the flexibility of 1–2 capsules daily. This non-GMO formula does not cause drowsiness and is a fantastic supplement for people who want to manage daily stress in a non-habit-forming way.
- Helps to temporarily promote relaxation.
- Magnesium helps maintain proper muscle function, including the heart muscle, and the body’s ability to metabolize nutrients and support normal electrolyte balance.
- Helps in energy metabolism and tissue formation, and in the development and maintenance of bones and teeth.
- Magnesium Bisglycinate is easy on the stomach.
Frequently Asked Questions
What is Natural Factors Magnesium 100mg + L-Theanine 125mg and what is it for?
Natural Factors Magnesium 100mg plus L-Theanine 125mg is a relaxation and stress support supplement combining two complementary calming nutrients in one vegetarian capsule. L-theanine is an amino acid found in green tea that promotes alpha brain wave activity within 30 to 40 minutes without causing drowsiness. Magnesium bisglycinate supports muscle relaxation, nervous system balance, and sleep quality. Together they are designed for adults who want calm, focused relaxation without sedation — suitable for daytime or pre-sleep use.
How do L-theanine and magnesium bisglycinate work in this formula?
L-theanine 125mg promotes alpha brain wave activity, associated with a calm yet alert mental state. Human studies show effects begin within 30 to 40 minutes of ingestion. Unlike GABA or sedative herbs, L-theanine does not impair cognitive function or cause drowsiness. Magnesium bisglycinate 100mg is a chelated form of magnesium bonded to glycine, which enhances absorption and reduces the laxative effect associated with magnesium oxide or citrate. Magnesium supports GABA receptor activity and helps regulate the nervous system's stress response. The combination addresses both the mental and physical dimensions of stress.
Who should take Natural Factors Magnesium plus L-Theanine and how is it used?
Designed for adults experiencing daily stress, mental tension, difficulty relaxing, or mild sleep disturbances who prefer a non-sedating solution. For relaxation support, take 2 capsules per day; for general use, take 1 capsule per day. Gentle on the stomach — magnesium bisglycinate does not cause the digestive discomfort associated with other magnesium forms. People with kidney disease should consult a physician before taking magnesium supplements. Not recommended as a substitute for prescription anxiety or sleep medications without medical guidance.
What distinguishes Natural Factors Magnesium plus L-Theanine from other relaxation supplements?
The combination of magnesium bisglycinate and L-theanine targets both the physical (muscle and nervous system) and mental (alpha wave) dimensions of relaxation simultaneously — a dual-action approach less common in single-ingredient magnesium or theanine products. Magnesium bisglycinate is a superior-absorption form that avoids laxative effects, unlike magnesium oxide which is found in many cheaper products. L-theanine at 125mg per capsule is at a dose shown in human studies to be effective for alpha wave promotion. Natural Factors manufactures this product in their own British Columbia facility with non-GMO raw materials.
What is Natural Factors, and is it a trustworthy supplement brand?
Natural Factors is a Canadian-owned supplement manufacturer founded in 1948 and headquartered in Coquitlam, British Columbia. One of North America's largest supplement makers, it operates over 1,000 acres of certified organic farmland in BC's Okanagan Valley and manufactures in-house at Health Canada-licensed, FDA-inspected facilities. Every product is third-party tested through ISURA for over 800 contaminants including pesticides and heavy metals. Natural Factors is also B Corp certified, meeting rigorous environmental and social standards.
What is Natural Factors and is it a reliable Canadian supplement brand?
Natural Factors is one of Canada's largest supplement manufacturers, founded in 1955 by Jack and Rona Katz in British Columbia and still 100% Canadian family-owned. The company controls every production stage from raw material sourcing to finished product. Its facility holds TGA certification from Australia's Therapeutic Goods Administration, one of the world's strictest supplement manufacturing standards. All products are ISURA certified — independently tested for 800+ contaminants including pesticides and heavy metals — and Natural Factors conducts four rounds of product testing, double the industry average of two.
What sets Natural Factors apart from other supplement brands?
Natural Factors' most distinctive quality is vertical integration: the company grows its own raw herbs on 1,000+ acres of certified organic farmland in BC's Okanagan Valley, then processes and manufactures in-house. Most supplement brands source raw materials from external suppliers with no direct agricultural control. Natural Factors also uses ISURA third-party testing, a Canadian standard that screens for over 800 contaminants, well beyond typical heavy-metal panels. B Corp certification further reflects a documented commitment to environmental and social accountability, not just a marketing claim.
What makes Natural Factors different from other Canadian supplement manufacturers?
Natural Factors holds TGA certification from Australia's Therapeutic Goods Administration — one of the world's most rigorous pharmaceutical manufacturing standards, rarely earned by Canadian brands and far exceeding most North American certification requirements. Its ISURA testing program screens every product for 800+ contaminants, and it conducts four rounds of quality testing per product versus the industry standard of two. The company also operates its own farm in the Okanagan Valley for select botanical ingredients — a level of vertical integration uncommon among supplement manufacturers — and has been family-owned for over 70 years.
The information provided above is for reference purposes only and has not been reviewed or approved by Health Canada. It does not constitute medical advice and should not replace consultation with a qualified healthcare professional.
Caution
Keep out of the reach of children.
Disclaimer
You should not use the information or services on this Site to diagnose or treat any health issues or for prescription of any medication or other treatment.
Always check the product label or packaging prior to using any product. If there are discrepancies, customers should follow the information provided on the product label or packaging.
Natural Factors, Magnesium Bisglycinate 100mg plus L-Theanine 125mg, 90VCaps
Size
90
vegetarian capsules
UPC
627765028676
Best Before
03/2029
69 people have viewed this item in the last 7 days
$21.49
Quantity
Not enough inventory in stock
Purchase limit exceeded
In-Store Purchases
In stock at LIFEPLUS Natural Health
#1825 - 4720 Mcclelland Rd, Richmond, BC
Free in-store pickup available
Ready by
Tomorrow, Aug 29
⏱️
Shipping Options
Available to ship
Estimate Ship Date
Tomorrow, Aug 29
⏱️
Metro Vancouver
Free Shipping Over $69
Within Canada
Free Shipping Over $99
United States
Mainland China
Starting from $9
