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 ARE YOUR VEGETABLE CAPSULES SOURCED?

Our vegetable capsules are made from tree fiber. Our Certificate of Analysis (CoA) verifies that no undesirable solvents are used to make our capsules. Solvent-free vegetable capsules offer superior digestibility and purity while providing beneficial fiber.

Vegetable capsules are a healthier alternative to solvent-tainted vegetable capsules, tablets, and animal-based gelatin capsules, all of which contain chemical preservatives and other contaminants.

DOES QUANTUM HAVE ANY MENOPAUSE-SUPPORT SUPPLEMENTS?

Quantum Women’s Power is formulated with powerful nutrients to support optimal functioning during menopause:

Libifem®. This fenugreek seed extract is clinically proven to support sexual health and promote menopausal comfort.*
LJ100®. Our Tongkat Ali ingredient is sourced from LJ100™, a standardized root extract of Eurycoma longifolia which consistently delivers evidence-based potency. Tongkat Ali root has a long history of safe use as a natural option for improving testosterone levels and supporting reproductive health.*
Women's Botanical Power Blend. This blend includes nutritive, zinc-rich pumpkin seed powder, hormone-balancing saw palmetto berry, and the energizing bioactive components from fermented cordyceps extract and American ginseng.*

WHEN SHOULD I TAKE MY SUPPLEMENTS?

The ideal timing depends on the specific supplement. If digestive upset occurs, try taking supplements after having a bite of yogurt, a teaspoon of nut butter, or a cracker. For specific recommendations, please refer to the label's recommended use and discuss it with a health professional.

WHAT ARE THE SHIPPING COSTS?

We are pleased to offer free ground shipping for supplement orders over $49.** Ground rate shipping cost is $6.95 for orders below $69. Expedited shipping costs are calculated based on service from our location in Austin, Texas, to your delivery location. The shipping cost will be calculated based on your order's weight and the shipping option you choose at checkout.

**Restrictions apply: Must be regular ground shipping within the contiguous USA. A flat rate of $19.95 shipping to HI and AK applies. Free shipping does not apply to certain heavy products. Please contact us directly for details.

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.

ARE THERE SUPPLEMENTS THAT CAN HELP ME SLEEP?

Clinical evidence supports the use of several different supplements for promoting restful sleep. These include:

Melatonin. This sleep-promoting hormone is naturally released by the body in the hours leading up to bedtime. Melatonin supplementation may help support a healthy sleep-wake cycle especially when you’re trying to realign your natural sleep rhythm due to shift work or jet lag. However, it’s important to use melatonin cautiously as scientists lack information on its long-term effects.
Magnesium. Magnesium deficiency is increasingly common and may cause nighttime symptoms like leg cramps. Easy for the body to absorb, magnesium glycinate is known for its calming properties and may promote relaxation and sleep. Research indicates that supplementing with magnesium may help some individuals fall asleep faster and stay asleep longer.
Lavender (Lavandula angustifolia). Essential oil components of English lavender, like linalool and terpineol, support sleep by reducing stress and activity in the central nervous system, lowering blood pressure, and potentially improving mood. Lavender has a long history of use in natural medicine for its calming properties and possesses limited risk for side effects. Lavender oil can be taken by mouth or administered through aromatherapy.
Valerian (Valeriana officinalis). This root extract contains many bioactive chemicals that can have moderate sedative and relaxing effects on the body. A possible mechanism by which valerian may improve sleep is by increasing the amount of gamma-aminobutyric acid (GABA), a calming neurochemical in the brain.11 Some studies have shown valerian to help people fall asleep faster and sleep more throughout the night.
L-theanine. An amino acid found in tea leaves, L-theanine is another substance that triggers the release of GABA.12 L-theanine naturally calms anxiety, enhances relaxation, and provides a safe natural sleep aid without drowsiness.13 L-theanine should be used carefully as it can interact with other medications.

Explore Quantum Nutrition Labs’ specially formulated sleep-promoting supplements at Supplements for Sleep.

HOW DOES THE SUBSCRIPTION PROCESS WORK?

When you sign up for our AutoSave Program, you’ll receive at least 10% off your subscription. Your savings increase to 15% if your subscription order totals $100 or a whopping 20% with a subscription order of at least $250.

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L-Theanine, Quantum

Product Benefits

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