3. L-Theanine Benefits
Let’s check out the main benefits of supplementing L-Theanine.
1. L-Theanine Improves Focus
L-Theanine is often supplemented due to its focus-boosting benefits.
If you combine it with caffeine (100 mg of caffeine with 200 mg of L-Theanine), your focus should improve even more. 
Actually, another similar study found that this powerful nootropic combo can provide benefits in just 30 minutes after you take it. 
Because of those reasons, L-Theanine has become one of the most popular nootropics on the market.
2. L-Theanine Helps With Stress
Another reason for supplementing L-Theanine is its power to help us deal with stress and anxiety.
There are several studies that prove the anti-stress properties of this amino acid.
Actually, one study found that supplementing L-Theanine increases relaxation without causing any drowsiness, which makes it an (almost) perfect supplement. 
I also found 5 controlled trials (104 participants) which found that L-Theanine proved very effective for people in stressful situations. 
But that’s not all.
3. L-Theanine Control Blood Pressure
Supplementing L-Theanine can be beneficial for people who have increased blood pressure.
I found a study which focused on observing healthy people that experienced high blood pressure during challenging tasks. 
What did the study find?
Well, L-theanine proved helpful once more.
Actually, it effectively controlled the blood pressure increase in the participants.
4. L-Theanine Might Improve Sleep
I’m sure you wonder how can a compound increase our focus and improve our sleep at the same time?
Well, let me explain.
A study found that people who were given L-Theanine supplement for 6 weeks reported improved and more restful sleep.
Another study showed that supplementing 250-400 mg of L-Theanine improves the quality of our sleep. 
While I wouldn’t recommend using L-Theanine as the only ingredient for improving sleep, it helps out to supplement it during the day or drinking a cup of green tea in the evening.