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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Availability:
Only 2 left in stock, order soon!
Arrives
Sunday, Dec 7
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Size: 60 Count (Pack of 1)
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
Brand: Sports Research
Flavor: Unflavored
Primary Supplement Type: L-Theanine (Suntheanine(R))
Unit Count: 60 Count
Item Form: Softgel
Item Weight: 3.2 ounces
Item dimensions L x W x H: 2.13 x 2.13 x 4 inches
Special Ingredients: L-Theanine (Suntheanine(R))
Diet Type: Gluten Free
Product Benefits: Brain Health Support
Is Discontinued By Manufacturer : No
Product Dimensions : 2.13 x 2.13 x 4 inches; 3.2 ounces
Item model number :
Date First Available : February 24, 2015
Manufacturer : Sports Research
Best Sellers Rank: #570 in Health & Household (See Top 100 in Health & Household) #10 in Amino Acid Nutritional Supplements
#10 in Amino Acid Nutritional Supplements:
Customer Reviews: 4.4 4.4 out of 5 stars 14,795 ratings
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Sunday, Dec 7
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
Size: 60 Count (Pack of 1)
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
Size: 60 Count (Pack of 1)
Style: L-theanine
High quality, natural L-Theanine. Great for focus, sleep, or just taking that edge off. I've used the product both during the day and before bed and it works fantastic for me with zero side effect. I only take it as needed and not daily and it's my go to supplement for such. If you've never tried L-Theanine before but we're recommended to try it then this is your best bet no doubt
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Reviewed in the United States on November 12, 2025 by Justin Smith
Size: 60 Count (Pack of 1)
Style: L-theanine
This product is a great alternative for drinking caffeine. It makes you awake, focused, and great before a workout. Especially in the morning when you need that caffeine boost.
Reviewed in the United States on November 21, 2025 by Carlyle Williams
Size: 60 Count (Pack of 1)
Style: L-theanine
These supplements are so subjective but whatever … I feel smarter taking them so … at my age I will take advantage of any advantage of that makes sense. May need to up the dosage:)
Reviewed in the United States on November 14, 2025 by Brittany Ingham
Size: 60 Count (Pack of 1)
Style: L-theanine Sleep Complex
If you’re looking to avoid Melatonin and want a more natural sleeping agent this is your bestie. Great brand, I have many of their vitamins, wish Costco sold this one too so I could get more bang for the buck but still a great product!
Reviewed in the United States on November 12, 2025 by Samantha Skye Chavez
Size: 60 Count (Pack of 1)
Style: L-theanine
Tiene un efecto muy agradable, yo lo tomo a medio día después del ejercicio, lo recomiendo totalmente, y como un tip ya todo pueden consultar en chatgpt
Reviewed in the United States on November 11, 2025 by G H R
Size: 60 Count (Pack of 1)
Style: L-theanine
So I bought this to help me sleep and to lower my cortisol levels. The first night I didn’t sleep at all! I was up for 2 days. It energized my brain and made me feel super focused but not at all sleepy. I have ADHD and it honestly feels like a natural Adderall. I don’t take ADHD medication so this was a HUGE win! I LOVE it!! I tell everyone about this. My brother who also has ADHD said the same thing. It really helps him focus too! We take this in the morning. Bee pollen has somehow been helping me with insomnia. So maybe try that if this doesn’t work. And if this keeps you up at night, try it in the morning and see if it helps you during the day!
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Reviewed in the United States on October 3, 2025 by Nicole
Size: 60 Count (Pack of 1)
Style: L-theanine
I have taken one and feel more focused and relaxed. These are a great find. I don't like to take supplements. These aren't bogged down with ingredients. I will recommend them to family.
Reviewed in the United States on November 3, 2025 by F. Buchanan