L-theanine is a naturally occurring amino acid most commonly found in tea leaves, particularly green tea, and is known for its potential calming effects. While caffeine can lead to increased alertness and focus, L-theanine promotes relaxation without causing drowsiness, making it a popular supplement among those seeking to enhance their mental performance while also managing stress. It is believed to work by influencing the production of neurotransmitters, such as serotonin and dopamine, which can positively affect mood and cognitive function.
Many users report that L-theanine may enhance the benefits of caffeine, leading to improved focus and reduced feelings of jitteriness when consumed together. This unique combination is often sought after by students and professionals during periods of intense concentration or study. As a dietary supplement, L-theanine is available in various forms, including capsules, powders, and tea, allowing individuals to choose the method that best fits their lifestyle. Typically, dosages range from 100 to 400 mg per day, depending on the intended effects and individual tolerance.