Too anxious to focus on your daily activities?

September 9, 2012

Studies show Suntheanine may help

Everyone experiences episodes of butterflies or nerves, but when anxiety becomes so high that it begins to interfere with your everyday life, it may be time to take action. Signs of high anxiety may include neglecting your regular exercise routine, becoming more disorganized and increased procrastination.

Suntheanine (a purified form of the amino acid L-theanine from Japan) reduces those feelings of apprehension by promoting the production of alpha brain waves, a state often achieved by meditation where one is deeply relaxed and mentally alert.

A recent study assessed Suntheanine’s effects on the anxiety levels of healthy university students. Researchers found that highly anxious students who received 200 mg. of Suntheanine improved their ability to pay attention and had better reaction times compared to those who received a placebo. The heart rates of those receiving Suntheanine also decreased.

Suntheanine produces these benefits without increasing drowsiness, slowing reflexes or impairing concentration. Its effects are generally felt within 30 minutes and have been shown to last up to 8-12 hours. It also improves quality of sleep, without the risk of addiction or morning grogginess. Suntheanine can now be found in chewable tablets, capsules, beverages and other foods.

For more information about this study visit

Meet the Experts

  • Derek Timm, PhD, RDN

    Derek Timm, PhD, RDN is more than your typical nutrition expert. In addition to being a registered dietitian nutritionist, Timm has earned a PhD in nutrition science. He is also a Monash University FODMAP-trained dietitian with expertise in how a high FODMAP diet impacts the symptoms of IBS.

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