🚚
Reliable
Shipping couriers
Premier Research Labs
L-Theanine, 60 caps
$19.95
🛡 Secure checkout
🚚 Efficient delivery
🌿 Quality products
Premier L-Theanine - Promotes Calm, Focus, and Mental Clarity *
Premier L-Theanine - Promotes Calm, Focus, and Mental Clarity *
Mood Support Supplement
- Supports calm and relaxed mood while enhancing mental clarity and focus.*
- May improve concentration, cognition, and sustained attention during demanding routines.*
- Encourages healthy sleep patterns without causing fatigue or overstimulation.*
- Clean-label, excipient-free formulation designed for safe, effective support.*
Premier L-Theanine provides evidence-based, high-potency support for calm focus and balanced mental clarity. Each vegan-friendly capsule delivers 200 mg of L-theanine, a standardized and stabilized active constituent, carefully processed to ensure consistent efficacy. Backed by clinical research, this supplement promotes relaxation, mental clarity, and focus without drowsiness or overstimulation.*
Why Choose Premier L-Theanine?
Clinically Relevant Dosing: Delivers 200 mg of L-theanine per capsule, the precise amount used in clinical studies for safe and effective support.*
Clean Label Commitment: No non-nutritive ingredients, fillers, binders, or synthetic excipients-just targeted support.
3rd Party Tested: Ensuring purity, potency, and consistent efficacy.
Vegan-Friendly: Non-GMO, gluten-free, soy-free, and manufactured in a GMP-certified facility.
Caffeine Synergy: Smooths caffeine peaks for sustained, focused energy without jitters.*
L-Theanine’s Mechanism of Action
L-theanine supports alpha brain wave activity, promoting a calm yet attentive mental state. By influencing neurotransmitters like glutamate, GABA, and serotonin, L-theanine helps maintain focus and clarity while managing stress. It also interacts with NMDA receptors to support calm focus without overstimulation.*
Product Pairings for Comprehensive CNS Support
For a complete approach to stress relief and relaxation, pair Premier L-Theanine with Tranquinol®, which features Suntheanine®, Affron®, magnesium malate, and synergistic botanicals for more comprehensive CNS support.*
Learn More About L-Theanine
L-Theanine: A Unique Functional Amino Acid in Tea - Front Nutr. 2022
Effects of L-Theanine on Stress-Related Symptoms - Nutrients. 2019
A Randomized Study on AlphaWave® L-Theanine - Neurol Ther. 2021
Analysis of Sleep-Support Supplements - Nutrients, 2023
L-Theanine for Athletes - J Int Soc Sports Nutr, 2019
L-Theanine and Caffeine Effects - J Physiol Anthropol, 2012
Unit Size: 60 plant-source capsules
Properties: no added stearates, vegan, gluten free, non-GMO, soy free, heavy metal tested, potency verified, purity verified
Contraindications: If pregnant, lactating, taking medications, or managing a medical condition (such as low blood pressure), consult your healthcare professional before use. L-Theanine may interact with sedatives or blood pressure medications.
Ingredients
Serving Size 1 Capsule Servings Per Container 60L-Theanine 200 mgOther Ingredients: Organic Rice Concentrate, Plant-Source Capsules (cellulose, water), Organic Rice Bran
- SKU PRL244
- Brand Premier Research Labs
Why shop with us
Wellness, delivered with care
📩
Customer Support
Available to assist you
🌿
High Grade
Quality sourced
🔒
Secure Checkout
Encrypted payment
Why this product
Built for everyday wellness
Premium Quality
Carefully selected ingredients from trusted suppliers.
Lab Tested
Verified purity and potency you can trust.
Sustainable
Responsibly packaged with the planet in mind.
Our promise
Natural wellness you can feel good about
Every product we carry is chosen with the same care we'd give our own families — clean ingredients, honest labels, and formulas that support real routines.
Complete your routine
You may also like
Pure Encapsulations
Adrenal
$19.75
Solstice Medicine Company
Bi Yan Pian
$20.80
White Tiger
Melazandra
$30.25
KPC Granules - Formulas
Chai Hu Gui Zhi Tang Granules, 100g
$27.99
Finding recommendations…
Recently viewed
Pick up where you left off
Browse products to see your recently viewed items here.
Questions
Product FAQ
The quality speaks for itself — this is exactly what I was looking for in a natural wellness product.— Verified customer