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L-Theanine, Quantum

Supplement

Find your Zen with L-theanine: Promotes calm, focus, and balanced energy naturally.

Stay Calm Under Pressure: Helps maintain a calm mindset during stressful moments.*

Boost Mental Clarity: Supports focus and concentration, even on the busiest days.*

Encourage Restful Sleep: Promotes relaxation and supports healthy sleep patterns without drowsiness.*

Clean and Effective: Free from unnecessary additives or fillers, this formula is designed for consistent safety, purity, and effectiveness.*

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Product Benefits

Calm, Focus, and Clarity for Active Lifestyles
Find your Zen with the clinically studied benefits of L-theanine—an amino acid from green tea leaves that promotes calm, focus, and mental clarity without the drowsy side effects Quantum L-Theanine delivers 200 mg dosage of L-theanine in every capsule, a clinically relevant dose used to support a balanced stress response, promote a positive mood and mindset, and boost cognitive performance.*

This clean-label L-theanine supplement is ideal for adolescents (12+) and adults seeking reliable support to maintain focus, composure, and balanced energy throughout busy days. With Quantum L-Theanine, you get trusted, targeted benefits for staying sharp and composed—whether managing stress, enhancing focus, or supporting relaxation.*

Why Choose Quantum L-Theanine?

Clean Label Commitment: Free from fillers, synthetic additives, and unnecessary ingredients—just pure, targeted support.
Third-Party Tested: Verified for purity, potency, and consistent efficacy.
Vegan-Friendly: Non-GMO, gluten-free, soy-free, and manufactured in a GMP-certified facility.
Caffeine Synergy: Smooths out caffeine’s energy peaks, delivering sustained focus while calming the jitters.*

What Makes Our L-Theanine Quantum?
Quantum L-Theanine is a clean-label supplement designed for purity and effectiveness. It is sourced from trusted suppliers and is 100% free from non-nutritive ingredients, binders, or excipients.

How Does It Work?

Quantum L-Theanine™ promotes calm and focus by:

Encouraging Alpha Brain Waves for a Zen State of Mind:
L-theanine promotes alpha brain wave activity, fostering a state of calm, focused alertness—like the mental clarity achieved during meditation. This helps you concentrate and stay composed, even in demanding situations.*
Influencing Neurotransmitters for a Balanced Stress Response:
L-theanine plays a key role in mood stability, focus, and cognitive performance by supporting neurotransmitters like GABA, dopamine, serotonin, and glutamate. This balance helps calm overstimulation while promoting emotional resilience and mental sharpness, even under pressure.*
Enhancing Caffeine Synergy for Sustained Focus:
L-theanine works compatibly with caffeine to smooth energy highs, reduce jitters, and maintain long-lasting focus. Together, they provide calm, steady energy, helping you stay productive without the crashes often linked to caffeine alone.*

FAQs

What are the benefits of Quantum L-Theanine?
Quantum L-Theanine™ promotes calm, focus, and mental clarity, helping to maintain a balanced stress response and healthy sleep patterns.*

Is it safe for adolescents and older adults?
Yes! Quantum L-Theanine™ is safe for adolescents (12+) and older adults, making it a versatile supplement for supporting calm and focus across all ages.*

How does it work with caffeine?
L-theanine complements caffeine by smoothing energy peaks and reducing jitters, creating sustained focus and calm energy without overstimulation.*

What is the recommended dose for L-theanine?
The clinically studied dose for adults and adolescents is 200 mg daily, typically in one or two divided doses.*

Can Quantum L-Theanine™ be taken daily?
Yes, Quantum L-Theanine™ is formulated for safe, daily use to support relaxation, focus, and a balanced stress response.*

Ingredients

Serving Size 1 Capsule
Servings Per Container 60

L-Theanine 200 mg

Other Ingredients: Organic Rice Concentrate, Plant-Source Capsules (cellulose, water), Organic Rice Bran

Recommended Usage

Quantum L-Theanine Recommended Use

Adults: Take 1 capsule, 1-2 times daily with meals or as directed by your healthcare professional.

Adolescents (12-18): Take 1 capsule daily with meals or as directed by a healthcare professional.

Product FAQ

HOW CAN I MAKE CHANGES TO MY ORDER?

Once your order is placed and you have received an order confirmation, we are unable to change your order to add or remove items. To purchase additional products, you will need to place a new order. You may cancel your order before shipment by calling 1-800-370-3447.

WHERE ARE QUANTUM SUPPLEMENT INGREDIENTS SOURCED?

Quantum Nutrition Labs (QNL) meticulously sources all of its ingredients, accepting only those that meet the highest quality standards for identity, purity, strength, and composition. We strive to procure sustainably produced botanicals and innovative nutrient blends to deliver the best, most bioavailable ingredients for each of our products.

Once received, all raw materials are held in a 10-day quarantine for an in-depth inspection. We test samples from every shipment lot in our state-of-the-art, USP-certified laboratory. After ingredients are proven to be safe, pure, and free of contaminants, they are moved into the manufacturing phase of supplement development.

HOW ARE YOUR SUPPLEMENTS TESTED?

We guarantee the quality and consistency of every supplement we offer by using cutting-edge testing equipment and practices and running multiple tests on each ingredient, including:

Heavy metal testing
Microbial testing for contaminants
Microscopy to evaluate botanical identity
High-performance thin layer chromatography, which looks at levels of active phytochemicals within a plant

At QNL, our rigorous testing protocols guarantee that our products are free from toxins, pesticides and herbicides, and steroid and antibiotic residues.

In addition to performing in-house testing, we engage numerous third parties to validate the quality of our products. Our manufacturing facility is certified by independent testing agencies like USP and NSF. Many of our products are further certified by the Non-GMO Project, OU Kosher, and USDA Organic.

Lastly, the vitality of the ingredients tested is screened using energetic assessment methods based on an applied kinesiology method known as the Bi-Digital O-Ring Test, developed by Dr. Yoshiaki Omura.1 This method has been an integral part of QNL’s ingredient sourcing and formulation development.

WHAT MAKES D3 GOLD DIFFERENT FROM OTHER VITAMIN D3 SUPPLEMENTS?

Our expertly crafted Vitamin D3 Gold is a cleaner, more effective option compared to other vitamin D3 supplements in a few ways:

We use a natural source of vitamin D3 that does not contain common allergens like peanut or soybean oil.
We do not use any chemical additives such as added coloring agents, flavors, or magnesium stearate.
Vitamin D3 Gold is delivered in a fat-soluble base (extra virgin olive oil) for improved absorption.
Vitamin D3 Gold provides 1,000 mg of vitamin D3 in a single drop.

WHAT IS THE QUANTUM PLANT MULTI-VITAMIN?

Quantum Plant Multi-Vitamin is a pure, plant-based, all-in-one daily supplement that offers a complete array of essential vitamins and minerals to support brain, bone, immune, and cardiovascular health while supporting pH balance with its plant-based, alkalinizing ingredients.* This multi-vitamin is made up of organic, non-GMO fermented greens and whole-food ingredients for maximum bioavailability and absorption with no added synthetics. For additional information, check out our Quantum Plant Multi-Vitamin blog post.

DOES QUANTUM TEST FOR STABILITY?

Yes, we test our products at a wide range of storage conditions, including stressed conditions to simulate advanced degradation scenarios that can include relative humidity up to 75% and temperatures as high as 104 degrees Fahrenheit to ensure the product remains stable when stored as directed on the label.

We also use nitrogen or argon flushes on many products to remove oxygen from their storage containers, extending the shelf-life. We also add moisture desiccants to keep the product dry.

Furthermore, we store our products in our exclusive VioliteTM containers. These dark violet-colored, polyethylene bottles are designed to prevent radiation damage to the ingredients by blocking light wave frequencies between 450 and 720 nanometers.

ARE QUANTUM NUTRITION SUPPLEMENTS GMO-FREE?

We use organic, non-GMO raw ingredients in our supplements whenever possible. The following formulations have been certified by a trusted non-profit organization called Non-GMO Project Verified:

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L-Theanine, Quantum

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