With so many great Best Suntheanine to pick from, like those from brands such as Natural Factors,Doctor’s BEST,Sports Research,365 by Whole Foods Market,Swanson, it can be tricky for customers to decide what to buy. But after extensive research, we’ve discovered the stand-out Best Suntheanine currently on the market.
Our team rigorously tested numerous products available to consumers. The one that stands at the top of our list is Natural Factors Best Suntheanine, thanks to its impressive performance and features. Below you’ll find more of our top-rated picks, along with insightful analysis from our seasoned experts. Check out their thoughts before making your purchasing choice. With this guide backing your decision, you’re sure to end up with a Best Suntheanine you’ll love.
Editor's Choice
Natural Factors Suntheanine L-Theanine 100 mg - Health Supplement for Calm Outlook - L-Theanine
Premium Pick
Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free,
Top 10 Best Suntheanine
We researched and compared the top products in the Best Suntheanine category to provide you with these recommendations.
1. Natural Factors Suntheanine L-Theanine 100 mg - Health Supplement for Calm Outlook - L-Theanine
- Supplement with Suntheanine L-Theanine: This chewable dietary supplement supports a calm, relaxed outlook without causing drowsiness
- Calm Sleep Support: This supplement is formulated to support high-quality sleep and relaxed sleep, aiding in restful nights for productive days
- Supplement for Calming Support: For calm sleep support, chew 12 tablets 3 times per day or as directed by a health professional
- Sleep Health Support: This calm sleep support supplement is free from dairy, wheat, gluten, yeast, soy, egg, fish, shellfish, animal products, salt, tree nuts, and GMOs
- About Natural Factors: Natural Factors is a family-owned B-Corp, Carbon Neutral, and 3rd Party with direct ownership of all manufacturing stages to ensure the highest quality supplements
2. Doctor's Best L-Theanine Contains Suntheanine, Helps Reduce Stress & Sleep, Non-GMO, Gluten Free,
- DOCTORS BEST L-THEANINE CONTAINS SUNTHEANINE: a patented form of the amino acid L-theanine. The amino acid L-theanine, that can be found in green tea, is the ingredient that gives tea drinking its calming effects
- RELAXATION AND FOCUS SUPPORT: L-Theanine supports relaxation and a sense of calm without causing drowsiness or loss of focus. This amino acid found naturally in tea helps support healthy stress response, focus and memory
- COGNITIVE ENHANCEMENT: amino acid found in tea that is considered a natural cognitive enhancer, improving memory, focus, and attention span by promoting a calming effect while maintaining alertness
- FOCUS & MENTAL CLARITY: helps to improve alpha brain wave activity, supporting focus, attention, and cognitive performance. Ideal for staying calm under pressure at work or at home
- NATURALLY CALMING: calm and stay sharp with help from 150 mg of natural L-theanine; has been shown to help with relaxation and stress relief without making you sleepy. It helps you stay calm and mentally balanced all day
3. Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation &
- ALERT & CALM: L-Theanine, commonly found in the flavonoid herbal green tea, is used as an ayurvedic substitute for those who want the antioxidant benefits of green tea but without caffeine. Encapsulated in a once-daily liquid softgel, our L-Theanine supports feelings of relaxation, calm, focus, and alertness*
- DOUBLE THE SUPPORT: To optimize your potential and give the utmost support, our L-theanine 200 mg amino acid softgels provide double the amount of L-theanine green tea extract commonly found in energy supplements in a convenient max-strength formula
- PATENTED SUNTHEANINE: Formulated with patented and clinically researched Suntheanineyou get all of the alertness and relaxation (+ the increase in alpha brain waves) without the jitters or crash of caffeine, energy pills, or energy drinks*
- PREMIUM INGREDIENTS: We hold all of our supplements to a higher standard. Rest assured that your L-Theanine is crafted using 100% organic coconut oil and an entirely non-GMO verified, gluten-free and soy-free product. Manufactured in the USA in cGMP-compliant facilities
- THE SPORTS RESEARCH DIFFERENCE: Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every bodyinside and out
4. Whole Foods Market, L-Theanine 100 MCG 60 CT
- 60 count L-Theanine supplement
- 100mg per capsule
- Supports healthy stress response without drowsiness
- Premium quality meets rigorous standards
5. Natural Factors Stress-Relax Suntheanine L-Theanine 125 mg, Non-Drowsy Stress Support for Mental
- Non-drowsy peace of mind: Feel calm and stay sharp with help from 125 mg of natural L-theanine; Fast-acting support for physical and mental relaxation
- Calm and focused: Promotes calmness and helps stimulate an overall sense of relaxation; Perfect for working through daytime stress and relaxing at night
- Natural ingredients: Suntheanine is a pure source of L-Theanine, an amino acid found in green tea and processed for maximum calming effects
- Two capsules: Take 1-2 times daily; Vegan, non-GMO, non-habit-forming and free of gluten and soy
- Third-party certified: Independently tested for GMOs and over 700 contaminants using advanced technology such as mass spectrometry to ensure purity and potency
6. Swanson Amino Acid Double Potency Suntheanine L-Theanine 200 Milligrams 60 Veg Capsules
- Double potency L-theanine supplement
- Delivers 2 mg per capsule
- Promotes balanced wellbeing
- OUR QUALITY COMMITMENT: For nearly 5 years, Swanson has delivered science-backed health products worldwide. Each wellness supplement is made in our GMP certified facilities, and our purity and potency testing includes independent third-party labs.
- Per GMP guidelines, most products are formulated for 24 months from the date of manufacture. Liquids and probiotics are formulated for 12 months.
7. BESTVITE Double Strength Suntheanine L-Theanine 200mg – Patented & Clinically Studied – 120
- CLINICALLY STUDIED PATENTED INGREDIENT: Suntheanine is a high-purity, L-isomer form of the amino acid theanine, produced via a patented fermentation process that mimics the natural process in green tea leaves.
- FOCUS AND RELAXATION SUPPORT: Suntheanine can help support mental alertness and focus. It can also support relaxation and stress without causing drowsiness.*
- PURE FORMULA: Bestvite Suntheanine contains no stearates, is non-GMO, gluten-free, and vegan. Each capsule contains 200 mg of Suntheanine.
- BESTVITE QUALITY: All Bestvite products are manufactured in the USA in accordance with GMP standards and undergo 3rd-party testing before release.
- NSF GMP CERTIFIED FACILITY: Bestvites facility is NSF/ANSI 455-2 Dietary Supplements Good Manufacturing Practice (GMP) certified. Earning GMP certification from NSF verifies that a manufacturing facility has the proper methods, equipment, facilities, and controls in place to produce dietary supplement products.
8. Sports Research L-Theanine 200mg with Organic Coconut Oil | Suntheanine Supplement for Focus,
- ALERT & CALM: L-Theanine, commonly found in the flavonoid herbal green tea, is used as an ayurvedic substitute for those who want the antioxidant benefits of green tea but without caffeine. Encapsulated in a once-daily liquid softgel, our L-Theanine supports feelings of relaxation, calm, focus, and alertness*
- DOUBLE THE SUPPORT: To optimize your potential and give the utmost support, our L-theanine 200 mg amino acid softgels provide double the amount of L-theanine green tea extract commonly found in energy supplements in a convenient max-strength formula
- PATENTED SUNTHEANINE: Formulated with patented and clinically researched Suntheanineyou get all of the alertness and relaxation (+ the increase in alpha brain waves) without the jitters or crash of caffeine, energy pills, or energy drinks*
- PREMIUM INGREDIENTS: We hold all of our supplements to a higher standard. Rest assured that your L-Theanine is crafted using 100% organic coconut oil and an entirely non-GMO verified, gluten-free and soy-free product. Manufactured in the USA in cGMP-compliant facilities
- THE SPORTS RESEARCH DIFFERENCE: Founded in Southern California in 1980, Sports Research is a family-owned business born from a passion for fitness and wellness. Our goal is to embrace the sport of life through research-backed products created for every bodyinside and out.
9. NOW Foods Supplements, L-Theanine 200 mg with Inositol, Stress Management*, 120 Veg Capsules
- STRESS MANAGEMENT*/PROMOTES RELAXATION*: Promotes relaxation without the drowsiness or negative side effects associated with other calming agents*
- HEALTHY VASCULAR FUNCTION*/WITH INOSITOL: Formulation includes inositol, a member of the B-vitamin family that is essential for brain and nervous system health*
- CLASSIFICATIONS/CERTIFICATIONS: Vegan, Kosher, Non-GMO
- GMP Quality Assured: A-rated, third-party certification means that every aspect of the NOW manufacturing process has been examined. Our in-house laboratories are ISO/IEC accredited for laboratory testing including for stability, potency and product formulation.
- Packaged in the USA by a family owned and operated company since 1968
10. BESTVITE Double Strength Suntheanine L-Theanine 200mg – Patented & Clinically Studied – 60
- CLINICALLY STUDIED PATENTED INGREDIENT: Suntheanine is a high-purity, L-isomer form of the amino acid theanine, produced via a patented fermentation process that mimics the natural process in green tea leaves.
- FOCUS AND RELAXATION SUPPORT: Suntheanine can help support mental alertness and focus. It can also support relaxation and stress without causing drowsiness.*
- PURE FORMULA: Bestvite Suntheanine contains no stearates, is non-GMO, gluten-free, and vegan. Each capsule contains 200 mg of Suntheanine.
- BESTVITE QUALITY: All Bestvite products are manufactured in the USA in accordance with GMP standards and undergo 3rd-party testing before release.
- NSF GMP CERTIFIED FACILITY: Bestvites facility is NSF/ANSI 455-2 Dietary Supplements Good Manufacturing Practice (GMP) certified. Earning GMP certification from NSF verifies that a manufacturing facility has the proper methods, equipment, facilities, and controls in place to produce dietary supplement products.
Peter
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