

⚡ Elevate your grind with calm, clean energy that keeps you winning all day.
Sports Research L-Theanine Supplement combines 200mg of purified L-Theanine with 100mg of organic caffeine and coconut MCT oil in easy-to-swallow liquid softgels. Designed to enhance focus, alertness, and relaxation without drowsiness or jitters, this premium, non-GMO formula supports sustained mental and physical performance. Manufactured in the USA under strict quality standards, it’s a top choice for professionals, students, and fitness enthusiasts seeking balanced, clean energy.


















| ASIN | B07MQWJYJ3 |
| Best Sellers Rank | #5,157 in Health & Household ( See Top 100 in Health & Household ) #3 in Sports Nutrition Endurance & Energy Herbal Products |
| Customer Reviews | 4.5 4.5 out of 5 stars (3,227) |
| Date First Available | January 14, 2019 |
| Is Discontinued By Manufacturer | No |
| Item model number | 023249012269 |
| Manufacturer | Sports Research |
| Product Dimensions | 2.13 x 2.13 x 4 inches; 3.53 ounces |
S**Y
My Go-To for Focused, Jitter-Free Energy — Been Using It for Years
I’ve been taking Sports Research L-Caffeine and L-Theanine for a couple of years now, and honestly, I don’t know how I managed my workday before finding this supplement. I work full-time in an office setting — lots of screens, constant emails, and the kind of mental fatigue that can really drag you down by mid-afternoon. I used drink a ton of energy drinks, but the spikes and crashes weren’t sustainable and made me feel wirey in a way that wasn't good long term. This supplement has completely changed that for me. Clean, calm energy is really the best way to describe it. Each capsule gives me a smooth, steady lift in energy and alertness, without any of the jittery or anxious side effects I’ve gotten from energy drinks. It kicks in gently, I'd say, after about 20 to 30 minutes and helps me stay sharp and productive for hours. There's no hard crash — just a natural taper back to baseline. What keeps me coming back to this product is how noticeably it improves my focus. Whether I’m diving into a spreadsheet, writing reports, or sitting through long meetings, I feel more dialed-in and mentally clear. Answers (most of the time right ones, ha!) come easy. It doesn’t feel like an artificial boost — just a better-functioning version of myself. The capsules are also incredibly easy to take. They’re small, smooth, and I’ve never had an issue with digestion, aftertaste, or lingering effects. That alone makes them easy to stick with daily with vitamin D supplement or magnesium. On top of that, I really appreciate the quality and transparency that Sports Research provides. The ingredients are clean, clearly labeled, and third-party tested. The product is vegan, non-GMO, and thoughtfully packaged — all things I’ve come to value after sticking with it for this long. Honestly, I like that it's not agro on the packaging. As an aside, I'm gonna take a leap and guess that the quality of the ingredients SR uses avoids any acrid smell. If you’re looking for something that supports real focus and mental clarity — without the wired feeling or the crash — this is it. After a couple of years of consistent use, I can confidently say this is one of the few supplements that actually delivers on what it promises. It's not the sort of supplement that will pep you up if you're not already getting adequate amounts of R & R, but it does add to your mental accuity if you need to focus. Highly recommended for anyone who wants to feel clear, calm, and focused throughout the day. One in the AM before work, maybe with a cup of Joe if you need it, and one at lunch is all you need to get the boost you need on a busy day. And at this price point, it's a pretty good return on investment. PS: they also produce a really good fish oil supplement, too!
M**A
Menopause SUCKS and sucks less by taking these.
This supplement has become an important part of my menopause health routine, and I can honestly say it’s been a game changer for my energy, focus, and overall well-being. The combination of L-Theanine, caffeine, and MCT oil provides a calm, steady boost without the jitters you get from coffee alone. A little advice... take these in the morning, not at night. They give you a clean, balanced energy that lasts throughout the day and helps you stay focused without crashing later on. I always keep an extra bottle on hand, thanks to my husband, just in case they sell out... that’s how much I rely on them. As with any supplement, I highly recommend doing your own research before starting. For me, these have been an excellent addition to my daily routine and have made a noticeable difference in my mood and energy levels.
A**T
Great Boost
I need my caffeine. Highly recommend for students/bar exam takers/attorneys. I bought this as a supplement for my coffee for the bar exam (and also used it during studying for the bar). I knew that I did not need any extra diuretic properties from coffee during the exam. This had less caffeine than my typical coffee, yet it made me more alert and able to focus than coffee. I assume it's a result of the L-Theanine. Seems to be high quality--friends who also had caffeine pills with twice as much caffeine reported that they felt more alert with this. Zero taste or smell, and relatively easy to swallow -- it is a relatively large soft gel. Now I keep them on hand for when I have to skip coffee for whatever reason or need an extra boost to get past the afternoon slump.
A**G
Lasts a little bit too long
I work a 12-hour night shift, and I am trying to avoid others sources of caffeine or chemicals to keep me awake and alert at night. I decided to give these a try because they have 200 mg of caffeine and L-Arginine. This tablet is a little bit large but is coated well and is easy to swallow. It also does keep you up all night. I have used it a few times and I prefer to take it before work, it does not give me jitters or the dump that straight caffeine gives you. You. However, I have noticed, according to my sleep score, that when I use this product I do not get enough REM sleep. Sleep. That is not a good thing, so I use it for the first day or so at work and then I don't use it for the rest of the week. Unfortunately, I find that when I do use this product I have a hard time going to sleep when I get home. I'm not sure that this is such a good idea for regular to use, but for us work shift where I did not get enough sleep. I will use this but not regularly anymore. As REM sleep is very important!
T**Y
Good buy
I have never used caffeine with l-theanine before and I'll say i am a fan. I am so impressed, I will buy it again. Why? Energy/Alert without the candy "high" feeling. High quality! I will recommenddddddd
T**Y
No jitters
I absolutely love this product! It's the first thing I take in the morning. I'm not ready for a cup of coffee the first thing in the morning, I need a while to move around and do a few things as does my stomach. This supplement fits the bill. I've been using it now every morning for the past 4 months and it works great for me, sometimes I even wait until noon before I even have my coffee and I forgot to say, absolutely NO jitters at all for me with this product.
S**I
Doesn't do anything to me. I feel it is simply being digested and ineffective.
I really wanted to like this product from this brand, but it simply doesn't do anything. I don't feel any different. It was a waste of money for me. However, the brand Zhou's Energy + Focus Pills has been absolutely awesome. I feel the clarity, focus and gentle energy rise without any caffeine jitters with pills from Zhou.
N**J
Customer for life
Customer for life. Zero jitters and anxiety. Great ratio of theanine to caffeine. 100mg caffeine is my max anyways. Provides excellent boost all day with it being subtle enough to fall asleep easily if taken at a common sense time during the day.
J**Z
I wake up at 5 AM and I start to work on my business. The first thing that I do when I wake up is to take 1 pill of this and it makes me focus on my work and be more energic
S**T
Rating: 2.5 out of 5 stars I was interested in this L-Theanine & Caffeine supplement for its potential to boost focus and energy without the jitters. While I noticed some positive effects, a few factors held me back from giving it a higher rating. Pros: Smoother energy: I did experience a less jittery energy boost compared to coffee alone. The L-theanine seems to take the edge off caffeine. Keto & Non-GMO: Appealing to those following specific diets and lifestyles. Cons: Dosage: It might be under-dosed for some. I didn't notice a strong focus effect in just one softgel. MCT Oil: Those sensitive to coconut products or on strict keto might need to consider this ingredient. Pricey: There may be more cost-effective options for getting L-theanine and caffeine. Overall: This supplement shows promise, but it wasn't quite the perfect fit for me. The concept of balanced energy is great, but the dosage, inclusion of MCT oil, and price point all left me slightly underwhelmed.
C**E
Muy buena vitaminas me han ayudado mucho
A**R
ماعمري حسيت بباور قد ماعطاني ذا اشيل اوزان ولا احس فيها مع انها ثقيلة
R**R
These vitamins are amazing! I love the way they make me feel so good! Since adding to my routine, I have watched my weight drop into numbers I have been trying to hit for years. It’s not magical but helps a lot. I usually take it as soon as I wake up with a large glass of water. Go to work, go to the gym 3x a week after work, and sleep well and I have the energy to do it! Clean, no crash! I feel superhuman! lol 😆
Trustpilot
2 weeks ago
2 months ago