Why L-Theanine and Caffeine Are The Ultimate Power Couple

Our promise of whole-body support for an active lifestyle is rooted in meticulous research and an extensive R&D process. Because it’s not enough to assemble the finest ingredients—we also want to amplify their effectiveness. That’s why all DOTE formulas are based on our unique bioactive combinations. L-theanine and caffeine is the dynamic pairing that led us to craft our Power supplements.

Whether you’re rising with the sun to train for a marathon, hitting a PR at the gym, cranking out pitch decks, or simply fighting off jet lag—you need a supplement that works as hard as you do. 

You’ll never settle for less than an extraordinary outcome. We won’t either.

Let’s take a closer look at how these two ingredients work together to increase and sustain energy levels.


L-theanine is an amino acid found primarily in mushrooms and green and black teas. Amino acids are needed for vital processes in the body, like building proteins and synthesizing hormones and neurotransmitters.

As Western cultures’ consumption of green tea rises, more research is being done into L-theanine’s benefits. The results of these studies have led many, including ourselves, to take advantage of the amino acid’s effects through L-theanine supplements.

Studies presented evidence that green tea influences psychopathological symptoms (e.g., reduction of anxiety), cognition (e.g., benefits in memory and attention), and brain function (e.g., activation of working memory seen in functional MRI).

Benefits you’ll find from incorporating L-theanine in proper dosages into your diet include:

  1. Improvement in mood

  2. A reduction of stress and anxiety-like symptoms

  3. A reduction in heart rate

  4. Improvement in cognitive and brain function

You can use L-theanine for sleep, high blood pressure, focus, memory, and your overall mood. L-theanine in your diet and life is worth exploring; it can be the nourishment that you need to get you through your seemingly never-ending to-do list. 

If you’re stepping into a meeting that can benefit from some clear focus or settling in for the day and need a peaceful night’s sleep for the next, L-theanine can help you reach the goals you’ve set for yourself.

Taking L-theanine is generally considered safe and hasn’t been linked to severe adverse effects. 


Caffeine; the natural and supportive stimulant you may be more familiar with. 

Whether you start your day with a black coffee because of its antioxidant-rich makeup or a pre-workout to ease the fatigue of your intense workouts, caffeine is an aspect of your life that you’ve come to know and love. 

Caffeine is a stimulant naturally found in the fruit, leaves, and beans of coffee, cacao, and guarana plants that increases activity in your brain and nervous system.

The effects of caffeine have been heavily researched, and time after time, studies confirm its abilities to enhance physical, cognitive, and psychomotor functioning (how your body responds to environmental triggers). 

Caffeine can improve alertness and vigilance during mental and physical fatigue, making it a restorative pick-me-up that allows individuals to continue surpassing their limits.

Caffeine is also recognized as a supplement that can aid in recovery from intense physical activity. Exercise burns off loads of glycogen, yet caffeine promotes glycogen resynthesis, which is needed for recovery. 

Post-exercise caffeine consumption and carbohydrate intake stimulate glycogen build-up, promoting faster recovery times. Compare caffeine and recovery to the growth of your plants; the more they grow, the more water they use, and the less water they have. You re-water your plants to give them more to work with as they continue to thrive; this is similar to caffeine’s support for your working body.

Your body and brain can only do so much without the proper support.

Here are the benefits you’ll find from incorporating proper amounts of caffeine into your diet:

  1. Increased alertness, energy, and ability to concentrate

  2. Reduced risk of several chronic diseases

  3. Post-workout recovery

Caffeine’s benefits bring great intrigue, but alongside its benefits come side effects that make many hesitant to incorporate the stimulant into their diets. You should consider your sources and dosages to obtain optimal benefits along with receiving medical advice.

DOTE products are formulated after thorough research into our ingredients’ properties. We prioritize sourcing the most potent, effective, and skillfully grown natural ingredients to bring the best product we can to you. 

L-Theanine and Caffeine Together


L-theanine and caffeine have benefits in their own respects, yet their effects in combination have only recently been considered.

In studying how L-theanine and caffeine work when combined, researchers found results that elite performance seekers should note. ​​L-theanine and caffeine can have an incredible impact on your cognition. The two substances on their own have a lesser impact that isn’t as effective.

In tandem, L-theanine and caffeine improve both speed and accuracy of performance for tasks that demand attention-switching (multitasking). The combination of ingredients also reduces susceptibility to distracting information in tasks that require information retention (memory). 

Results cemented previous evidence, suggesting that L-theanine and caffeine in combination are beneficial for improving performance on cognitively demanding tasks. Cognitive tasks are those that require the mental capacity to process, discern, and recall new information. Strong cognitive performance allows for success in all fields. Conclusions on caffeine and l-theanine dosages for anxiety and cognitive performance were done using 50 mg caffeine combined with 100 mg L-theanine.

Not only is the duo beneficial in brain function, but research suggests the combination helps with body regulation. Caffeine and theanine were shown to suppress body weight increase and fat accumulation. Combining caffeine and L-theanine for weight loss may bring positive results.

While caffeine stimulates, L-theanine calms, creating an experience that gives you focus when in need without jitters that promote anxiety and disrupt you when falling asleep.

DOTE Distinction

We formulated Power supplements with this supportive duo in mind.

As we set out on our journey to unequivocally create the tools that encourage whole body support for an active lifestyle, it’s imperative that we find the best combinations of support that nature has to offer.

Power was thoughtfully designed to support those with the DOTE mindset. For those who see no limits in what they can accomplish each day yet refuse to compromise their state of mind, Power is their support.

Each Power capsule contains a smarter, cleaner, and healthier energy boost. Inside Power, you’ll find four natural ingredients, including a precise blend of caffeine and L-theanine. 

Designed by DOTE to set you up for success, Power prevents spikes and crashes so you can experience peak performance and enhanced concentration without overstimulation.