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.* 
Regular Price: $19.95 Sale Price: $14.96 ea - 25% Off
In stock
25% OFF
$14.96
$19.95
Item:
12851
L-Theanine, Quantum

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.* 

L-Theanine, Quantum

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

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.

WHAT IS THE HISTORY OF QUANTUM NUTRITION LABS (QNL)?
QNL was created by Dr. Robert Marshall, Ph.D., CCN, who practiced clinical nutrition for more than 30 years and hosted “HealthLine Now,” a radio show that helped listeners with their health and wellness goals. His whole foods approach to dietary supplementation, which included avoiding nonnutritive excipients and other common, commercially used additives, were, and still are, the foundation of our clean, high-quality, wellness products.

The philosophy behind our “quantum” approach to nutrition is that all living organisms possess a bioenergetic field that transcends physical matter. This biofield can be invigorated by whole food nutrients and phytochemicals that support the body's bioenergetic field, cellular health, and overall functioning. By exclusively utilizing the purest natural ingredients to create our products, Quantum Nutrition Labs aims to harmonize your body with the natural world and help you live your healthiest, most vibrant life.

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.
HOW DOES THE SUBSCRIPTION PROCESS WORK?
When you sign up for our Subscribe & Save 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.
WHEN WILL I RECEIVE MY ORDER?
We ship most orders within 24 hours of order submission (excluding weekends/holidays) and deliver most ground shipments within 5-7 business days. Exceptions may apply. Please allow additional days for transit during inclement weather conditions and holidays.
WHAT ARE EXCIPIENTS?
Excipients are binders, fillers, and "glues" that are added to many supplements to prevent clumping of powdered ingredients and improve efficiency in manufacturing. Typically, excipients do not have nutritional value and their ingestion can cause adverse effects, toxicity, allergic responses, and drug interactions.

At Quantum Nutrition Labs, we do not use any non-nutritive excipients in the manufacturing of our products. Our products are designed to provide pure, clean nutritional supplementation without any toxic tagalongs that can harm the body.

Quantum Nutrition Labs offers capsules, powders, and liquid supplements, but not tablets. This is because tablets almost always require non-nutritive binding agents to manufacture. When you choose a Quantum Nutrition product, you can be assured that its contents are pure.

WHAT ARE THE SHIPPING COSTS?
We are pleased to offer free ground shipping for supplement orders over $99.** Ground rate shipping cost is $9.95 for orders below $99. 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. Canada will require either FedEx International Economy or FedEx International priority services and cannot be shipped to PO boxes. A flat shipping fee of $32.95 will be charged for FedEx International Connect+ shipments and $54.95 will be charged for FedEx International Priority. Free shipping does not apply to certain heavy products. Please use Contact Us page directly for details.

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