Natural Factors Natural Factors - L-Theanine - 250 mg 250 mg, 90 vcaps
Natural Factors L-Theanine - 250 mg - L-theanine to temporarily promote relaxation and mental clarity. L-theanine is found naturally in green tea and has long been known to promote relaxation in green tea drinkers. It can also be made for supplementation through a natural fermentation process that mimics its production in green tea leaves. L-theanine is absorbed quickly and provides a noticeable effect within 30–40 minutes of supplementation. It is transported directly to the brain, where it stimulates the alpha brain waves associated with an awake yet relaxed state of mind. L-theanine provides relief from symptoms of occasional and daily stress, helping to calm the nerves and focus the mind. L-theanine is a fantastic option for adults looking to improve symptoms of occasional and daily stress using a non-drowsy and non-habit-forming supplement.

Price
Regular Canadian retail price: $22.68 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 $75. 30-day returns. Ships from Victoria, BC.
See member pricing on Natural Factors Natural Factors - L-Theanine - 250 mg
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: stress resilience, steady energy, calm focus, adrenal support.
What the research supports
- Handle stress better (evidence: moderate, from rct, systematic review)
- Adaptogens like ashwagandha help you feel less frazzled on busy days.
- Steadier energy (evidence: mixed, from clinical trial)
- Some people feel more even energy and less fatigue, though results vary.
Read the literature: Handle stress better on PubMed, Steadier energy on PubMed.
Product details
- Active ingredient
- Natural Factors - L-Theanine - 250 mg
- Ingredient form
- vcaps
- Strength
- 250 mg
- Servings per container
- 90
- Suggested use
- As directed on label
- 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
Take 1 to 2 capsules daily with food, or as directed by your healthcare 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.
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 - L-Theanine - 250 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?
- Forty-two years of supplier relationships let us price below what stores charge. You see it privately because you have unlocked the Vault.
- How fast does it ship?
- Orders placed before 2pm ET ship the same business day from our Canadian warehouse. Shipping is free over $75.
- Can I return it?
- Unopened products can be returned within 30 days. Find it cheaper anywhere in Canada and we will match the price.