Sports Research Double Strength L-Theanine Supplement - Suntheanine Softgels for Focus, Relaxation & Alertness - Non-Drowsy Support Made with Coconut Oil, Non-GMO & Gluten Free - 200mg, 60 Count
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Arrives
Saturday, Aug 22
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Style: L-theanine
Features
- 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
Is Discontinued By Manufacturer : No
Product Dimensions : 2.13 x 2.13 x 4 inches; 0.48 ounces
Item model number :
Date First Available : February 24, 2015
Manufacturer : Sports Research
Best Sellers Rank: #990 in Health & Household (See Top 100 in Health & Household) #26 in Amino Acid Nutritional Supplements
#26 in Amino Acid Nutritional Supplements:
Customer Reviews: 4.4 4.4 out of 5 stars (15,046)
Brand Name: Sports Research
Primary Supplement Type: L-Theanine (Suntheanine(R))
Item Form: Softgel
Diet Type: Gluten Free
Product Benefits: Brain Health Support
Age Range Description: Adult
Container Type: Bottle
Dosage Form: Capsule
Model Name: Sports Research L-Theanine 200mg with Organic Coconut Oil - Double Strength Suntheanine L Theanine Supplement for Mood & Focus - 60 Softgel Capsules for Adults
Supplement Formulation: Individual Supplement
UPC: 023249010173
Manufacturer: Sports Research
Manufacturer Part Number: FG_LT
Model Number:
Unit Count: 60 Count
Item Weight: 13.61 g
Item Dimensions: 2.13 x 2.13 x 4 inches
Number of Items: 1
Total Servings Per Container: 60
Flavor: Unflavored
Special Ingredients: L-Theanine (Suntheanine(R))
Dose Release Method: Osmotic Release
Material Features: GMO Free
Specific Uses For Product: Brain
Allergen Information: Gluten Free
Color: No Color
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Aug 22
This item is non-returnable:
Non-returnable due to Food safety reasons
View our full returns policy here.
Non-returnable due to Food safety reasons
View our full returns policy here.
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Top Amazon Reviews
Style: L-theanine
I'm a fifty year old health care provider who will always remain skeptical of any nutritional supplement making bold, 'life-changing', or disease modifying claims or statements . I like to place my faith in conventional medicine, and prefer to see evidence of successful scientific studies before I feel comfortable recommending any product to a patient, friend, or family member. I purchased this Suntheanine Supplement on Amazon as an experiment a few weeks ago, and chose it mainly because of the overwhelming tide of other positive reviews. Over the past few months, I have been seeking a safe and 'natural' nutritional supplement to help me with some anger management and 'irritability' issues I sometimes have in my workplace environment. Patience with difficult people has never been one of my strengths, and my daily irritability is made all the worse by my caffeine consumption. To make a lengthy story shorter, I take a 200mg Suntheanine capsule one hour before work and--astonishingly--I am alert, focused, and relaxed throughout the course of my eight hour work day! I was stunned and pleasantly surprised that I had finally found a supplement that did exactly what it claimed---and more. I was elated and recommended the product to a fellow 'highly strung' colleague of mine who, after using Suntheanine for several days, informed me the product made him feel 'happy' and relaxed for the first time in a long time. It was important for me to have another health care professional confirm what I suspected and have the same-- or at least a similar--positive response to the same product. I had to rule out the role 'positive thinking' played in this experiment of mine. I have restricted my caffeine consumption a bit, but the oddest sensation I've noticed is that even after consuming copious amounts of coffee or caffeinated soda, I am still calm, alert, focused, and relaxed. I have read that theanine stimulates the production of nitric oxide in endothelial cells. This would cause blood vessels--particularly those in the heart--to dilate or relax. This action is important because many coffee, tea, and soda drinkers have related that theanine seems to work WITH caffeine to help promote concentration on mental tasks, inducing a state of alert calmness WITHOUT the unpleasant effects of caffeine overstimulation like; anxiety, irritability, repetitive behaviors,etc. Alpha brain wave activity increases and Beta brain wave activity decreases, but this is probably more than any of us needs to know about this supplements in vivo activity. Theanine is also purportedly effective in preventing certain forms of cancer, and may have some application in the future vs Alzheimer's disease. More studies need to be performed, but this is a supplement that obviously has multiple health benefits. It is for these and so many other reasons that I highly recommend this supplement for those seeking a unique product capable of inducing mental clarity and relaxation without inducing drowsiness. I am the same person I always was before Suntheanine, but these days I find that I am much more relaxed throughout the course of my hectic days at work. 5 stars for this life-changing supplement!
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Reviewed in the United States on April 30, 2017 by M.J.Lawicki
Style: L-theanine
I’ve had intense anxiety (social and general) for as long as I can remember. Years ago I turned to alcohol to help—a couple of drinks when I felt anxious, or before a social situation calmed everything down, and I felt as though I could manage. But it quickly spiraled out of control to the point where I wasn’t drinking and getting drunk, but instead “dosing” throughout entire days and evenings. The moment I’d try to stop the world would come crashing down and it became a choice between feeling “normal” by drinking something, or dealing with nonstop racing heart, shortness of breath and severe depression. Well the latter was absolutely horrible to live with, so I kept choosing the former. I was hiding liquor bottles in the house so I could pop back to a room and take a nip the moment I would start to feel overwhelmed. Obviously this wasn’t sustainable. My epiphany occurred when my senior dog had a seizure, and to cope, I begged my partner to go and pick up a pint of alcohol, just to get through the worry and fear (she’s okay now). I realized SOMETHING had to change. I read and did research and decided to try L-theanine. This brand was the first brand I tried. I began with 2, and then upped the dose each day until I found the perfect “sweet spot” for me at 1200mg*. That seems like a lot, but my brain had been depleted of natural anxiety defense for years. The day I took at the amount for the first time changed the entire course of my future. For once I was able to breathe, to think clearly, to feel calm and normal without a drop of alcohol. The effect lasted nearly 12 hours, and that night I slept like a baby. I tried it the next day, when that familiar anxiety and urge to drink crept up... and it worked again. Within the hour, my heart began to beat normally, and I was calm and content, and once again drifted off to sleep that night genuinely looking forward to waking up (a rare thing when you drink every night). So far I’ve been sober for three weeks, and I feel amazing. There are no sedation, stimulating or uncomfortable side effects, it kicks in within 30-60 minutes (depending on whether you’ve eaten), and one dose lasts me 12+ hours. I have zero urge to drink, I sleep great, my mood is amazing, and my typical ADHD brain is clear and focused! It’s my belief that when my brain finds equilibrium and begins to produce its own dopamine again (which I’ve read takes about 6 months for alcoholics and problem drinkers) that I’ll only need the L-theanine on difficult or stressful days. For someone who spent every waking moment suffering the pain of severe anxiety, I could really cry from joy for this mental, physical and emotional reprieve. For once I’m truly excited about the future. *1200mg is a high dose, and over the recommendations based on studies looking at changes in alpha waves (200-400mg). I am not a doctor or health practitioner, nor am I suggesting people follow my dosage right out of the gate. If you’ve never had substance abuse issues, you likely will not need such a high dose. Research and consult your doctor before adding any supplement, especially if you intend to take more than the recommended amount. I began with two (the highest recommended dose) and did not increase that dose until 24 hours later. I stopped at 1200mg because that was the dose that gave me the relief and results I was looking for; I do not intend to exceed that amount for myself in the future. Edit to Update: it’s over a year later, and I no longer drink, nor do I need to take Theanine (even in social situations!). My brain is clear, I’m genuinely happy, and so so glad I discovered this. Quitting drinking can be hard, but this absolutely saved my sanity and my life. I still will always keep a bottle on hand, and I can’t recommend it hard enough for folks desperately looking for aid. Good luck out there friends!
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Reviewed in the United States on June 20, 2021 by Genevieve Gerend Genevieve Gerend
Style: L-theanine
Makes me feel relaxed, and has improved my sleep
Reviewed in the United States on February 22, 2026 by Lina Solano
Style: L-theanine
I have dysautonomia, a neurological condition that, among other things, causes anxiety. I also have PTSD, which brings its own anxiety. So, I am doubly cursed. Regular medications were not really helping, so my integrative medicine specialist (who is also double board certified in endocrinology), asked me to start taking L-theanine (I just call it theanine). She prescribed the brand Thorne Research. Well, my life changed for the better because the theanine shut off my anxiety (I take 200 mg three times a day). My friends and family and doctors were surprised at how effective theanine is for me. I LOVE the stuff. However, Thorne Research is very, very expensive if you are taking 90 pills a month. So, I started searching for a more economical brand. After trying five others—none of which were as effective as Thorne Research's—I tried Sports Research. It has nearly the same effectiveness and is a close enough option that I have made the switch. The one thing that I dislike about this is that the pills are so large and are difficult for me to swallow at times. I also wish they had a 90-pill bottle to purchase. However, I am grateful it is offered via Subscribe and Save. After my two-bottle trial period, I have set up a regular order via Subscribe and Save. Theanine, if a good quality and actual dose version, such as Sports Research offers is a POWERFUL TOOL IN FIGHTING ANXIETY. I also love that it is not addictive, such as medications like Xanax, and it has no side effects.
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Reviewed in the United States on August 25, 2017 by Patricia M. Dashiell
Style: Sleep Complex w/Melatonin
These work well for temporary sleep issues! Easy to take and no taste. Will order again!
Reviewed in the United States on February 23, 2026 by D and A