L-theanine is a popular supplement with many claimed benefits that can be bought in the majority of health stores.
It’s an amino acid found in most types of tea and some mushrooms but is often sold as a tablet or powder.
There is still limited scientific research into the effects of L-theanine, but here we rundown some of its potential uses.
L-theanine Benefits
L-theanine is most commonly used to ease anxiety and aid relaxation without promoting drowsiness. A number of studies have found it does help people cope with stressful situations, and that it can even reduce resting heart rate.
Another common claim is that L-theanine boosts the immune system, and some studies have found that it can reduce the likelihood of some infections. Very little research has been done in this area, though.
Sleep quality can also be improved when L-theanine is taken before bed according to some research, and those who suffer from high blood pressure have used it to help control their symptoms when doing stressful tasks.
Effectiveness When Taken With Caffeine
Tablets containing a combination of caffeine and L-theanine are widely produced because the latter is believed to enhance the effects of the former on mental focus.
Studies have found that even moderate doses of the two substances can have a beneficial effect when participants undertake mental tasks.
Caffeine is, of course, a popular pre-workout supplement as this boost in focus can lead to improved performance - particularly when it comes to endurance.
And L-theanine is also believed to soften the crash feeling that sometimes follows a caffeine buzz.
How Much Should You Take?
There is little evidence on what the best dosage of L-theanine is, but it’s always best to consult a doctor before consuming extremely large amounts.
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