Natural Factors Natural Factors - Magnesium Bisglycinate Plus L-Theanine - 125 mg, 90 vcaps
Natural Factors Magnesium Bisglycinate Plus L-Theanine - Combines 100 mg of the essential mineral magnesium with 125 mg of the amino acid L-theanine to temporarily promote relaxation without causing drowsiness. This non-GMO formula features magnesium bisglycinate, which is easy on the stomach and does not rely on stomach acid for absorption. 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. 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.
Price
Regular Canadian retail price: $21.48 CAD. Price Vault members pay below retail on this product. Member pricing is private and shown after a free opt-in, with no membership fee, no minimum order and no subscription.
In stock. Free shipping across Canada on orders over $89, flat $9.95 under that. 30 days to request a return, with return shipping paid by the customer. Ships from Victoria, BC.
Why people keep reordering it
- Adaptogen support
- Herbs traditionally used to help the body adapt to everyday stress.
- Steady energy
- Supports balanced energy without the spike and the crash.
- Calm focus
- Helps you stay even through demanding days.
Best suited to: wants fast calm and a mineral that builds, short on magnesium and short on patience, oxide magnesium has upset their stomach.
What the research supports
One capsule is 100 mg of magnesium and 125 mg of L-theanine. The label's higher dose is two capsules, which doubles both to 200 mg and 250 mg.
Magnesium trials use 200-400 mg; theanine trials use 100-400 mg daily.
- Stress (evidence: moderate, from randomized controlled trial)
- L-theanine crosses into the brain and raises alpha wave activity, the pattern linked to calm without drowsiness. Two capsules reach the 250 mg dose trials use for this.
- Muscle cramps (evidence: moderate, from randomized controlled trial)
- Muscles need magnesium to relax after they contract, and without enough they stay tense. Two capsules give 200 mg, the low end of doses used in cramp trials.
- Sleep (evidence: mixed, from randomized controlled trial)
- Magnesium quiets the nervous system and theanine raises calming brain waves, which is why both are taken at night, but trial results for sleep quality are inconsistent.
Read the literature: Stress on PubMed, Muscle cramps on PubMed, Sleep on PubMed.
Is it right for you
Worth it if
- Wants fast calm and a mineral that builds
- Theanine acts within 30 to 40 minutes while magnesium takes one to three weeks, so the two work on different clocks in one capsule.
- Short on magnesium and short on patience
- Two capsules cover 200 mg elemental magnesium and 250 mg theanine without running two separate bottles.
- Oxide magnesium has upset their stomach
- The magnesium here is bisglycinate only, so it absorbs without stomach acid and rarely loosens stools at 200 mg.
Look elsewhere if
- Anyone who needs a full 400 mg of magnesium
- Getting there takes four capsules and drags theanine up to 500 mg with it. A straight bisglycinate powder or capsule at 200 to 400 mg elemental per serving is the cleaner route.
- Wants theanine on its own during the day
- A 250 mg L-theanine capsule gives the full theanine dose in one swallow, with no mineral attached.
- Buying magnesium for bone or cramp support alone
- A single-ingredient bisglycinate gives more elemental magnesium per capsule and per dollar, since none of the capsule is amino acid you did not want.
What to expect
The theanine half shows up inside 30 to 40 minutes as mental tension letting go, then fades over a few hours. The magnesium half is not felt at all early on and turns up as fewer night cramps and steadier sleep after one to three weeks of daily use. Judge it on both clocks, not the first evening.
How it compares
- Compared with buying magnesium and L-theanine separately
- One bottle and a fixed 100 mg magnesium to 125 mg theanine ratio that already works at the two-capsule dose. The tradeoff: You cannot move one dose without moving the other, so more magnesium always means more theanine.
- Compared with the 250 mg theanine version of the same pairing
- 100 mg of magnesium per capsule against 40 mg, so two capsules reach a researched 200 mg magnesium dose instead of a token amount. The tradeoff: Half the theanine per capsule, so you swallow two to get to 250 mg.
Product details
- Medicinal ingredients
- Magnesium (bisglycinate), L-Theanine
- Ingredient form
- vcaps
- Strength
- 125 mg
- Servings per container
- 90
- Suggested use
- 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.
- Country of manufacture
- Canada
- Independent testing
- ISURA
- Certifications
- Non-GMO, Made in Canada
- Storage
- Store in a cool, dry place
- Brand
- Natural Factors
How to take it
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.
- Store in a cool, dry place away from direct light.
- Keep out of reach of children.
- Consult a practitioner if you are pregnant, nursing or on medication.
Ingredients
Each vegetarian capsule contains
- Magnesium (bisglycinate)
- 100 mg
- L-Theanine
- 125 mg
Non-medicinal ingredients
Vegetarian capsule (carbohydrate gum [cellulose], purified water), rice flour, vegetable grade magnesium stearate (lubricant), stearic acid, silica.
Free from
Contains no artificial colours, preservatives, or sweeteners; no dairy, sugar, wheat, gluten, yeast, soy, corn, egg, fish, shellfish, animal products, salt, tree nuts, or GMOs. Suitable for vegetarians/vegans.
Interactions and cautions
- Medications
- May interact with thyroid, sedative or immune medication. Review with your practitioner.
- Timing
- Separate from medications by 2 to 4 hours unless directed otherwise by a healthcare practitioner.
- Pregnancy and breastfeeding
- Consult a healthcare practitioner before use if pregnant or breastfeeding.
- General
- Use only as directed. Discontinue and consult a practitioner if you experience an adverse reaction.
This product is not intended to diagnose, treat, cure or prevent disease. Consult a healthcare practitioner before use. Free certified advisors are available at 1-888-386-1211, Mon to Fri, 9am to 5pm PT.
Questions about Natural Factors - Magnesium Bisglycinate Plus L-Theanine - 125 mg
- Is this the genuine, authentic product?
- Yes. It is identical to what you would pay full price for anywhere else, sourced through our authorized supplier relationships.
- How is the price below retail?
- We buy direct, with nobody in the middle taking a cut, and we sell it for close to what we paid. You see the price privately because you have unlocked the Vault.
- How fast does it ship?
- Orders placed before 12pm PT are processed the same day and ship within two business days. Shipping is free over $89, and a flat $9.95 under that.
- Can I return it?
- You have 30 days after it arrives to request a return. Product must be unused, in its original packaging, with proof of purchase, and return shipping is paid by you. Find it cheaper anywhere in Canada and we will match the price.