If youāre like me, getting a good nightās sleep can be a challenge. Itās not unusual for me to get up and down three or four times a night. L-theanine, a natural product, effectively counters insomnia and addresses issues with concentration, sleep apnea, anxiety, and more.
Although relatively new to the US market, L-theanine has been safely used in Japan for decades. Present in green and black teas. Tea is a native plant of East Asia. In 1964, authorities approved adding L-theanine to all foods, including herbal teas, soft drinks, chocolatesāexcept for baby foods.
Many Americans have sleep issues. The Centers for Disease Control classifies lack of sleep as an actual public health problem. Sleep deprivation correlates with car accidents, industrial mishaps, and various medical conditions. People who donāt get enough sleep are more likely to suffer from high blood pressure, diabetes, depression, cancer, and even a shorter life.
The age-old question is, how much sleep does a person need? Small children should sleep 10-12 hours a day; teenagers need 9-10 hours a day and for adults, 7-8 hours a day is optimal.
How Can I Get L-theanine In My Diet?
The good news is that adding L-theanine to your diet is not difficult.
Pills or powder, or tea?
Green and black tea naturally contain L-theanine. According to the University of California at Berkeley, L-theanine alters the levels of some neurotransmitters and has a calming effect that counteracts the caffeine in the tea. The combination of caffeine plus L-theanine aids in accomplishing mental tasks and produces a feeling some call āalert calmness.ā
So how much L-theanine is there in a cup of tea? University of Bristol researchers studied the l-theanine content in a cup of regularly brewed commercial tea. They discovered that longer brewing times led to higher quantities of the amino acid, but on average:
- A typical 200 ml cup of brewed black tea contained 24.2 mg of l-theanine (+ or ā 5.7 mg)
- A typical cup of brewed green tea contained 7.9 mg (+ or ā 3.8 mg)
L-theanine supplements are typically available in doses of 200 mg.
In another study, researchers in the Netherlands, measuring brain wave activity of test subjects, learned that anxiety was significantly reduced after drinking only a couple of cups of tea.
If youāre not a tea drinker ā or you canāt drink it without adding a lot of sugar, which you donāt want ā pills containing L-theanine may work better for you.
Health food stores and more mainstream stores like GNC are good sources to find the pill form of L-theanine. You can also easily get capsules online. I really like this patented form of L-Theanine by Sports Research as I feel happier, relaxed, calm, alert, and focused just after a few days of taking it.
How Does It Work?
L-theanine is a water-soluble amino acid and it increases levels of dopamine and GABA (Gamma-aminobutyric Acid) in the brain. The brain produces GABA naturally. GABA relieves anxiety, improves mood, and may reduce the symptoms of PMS and ADHD, according to Web MD.
Like Valium, L-theanine affects GABA activity, and L-theanine may also affect dopamine and serotonin levels in the brain.
The GABA found in l-theanine may also be effective for high blood pressure and motion sickness. It’s also demonstrated to enhance test performance without causing agitation, unlike coffee.
L-theanine is widely regarded as very safe. While generally safe, some users may experience headaches, gastrointestinal symptoms, or dizziness as rare side effects. There is no information about the safety of its use during pregnancy.
L-theanine for Sleep
How much L-theanine should you take for sleep?
The L-theanine sleep aid dosage is usually listed as 100-200 mg. That amount can be taken 2-3 times a day. As mentioned, one dose is about the equivalent of 10 cups of tea. Another source recommends 200-250 mg. As you can imagine it is quite impossible to get an overdose of L-theanine from drinking tea š
There is evidence to suggest that people who suffer from sleep apnea (a breathing disorder that interrupts a personās sleep) can benefit from L-theanine. According to How Stuff Works, L-theanine found in green tea works great for sleep apnea. The study showed using L-theanine indicated that it was helpful in improving the reduced performance that results from fatigue and sleep apnea.
The best way to get to sleep and stay asleep is to be in a relaxed state. How does L-theanine induce relaxation? One way is that it reduces sympathetic nervous system activation in stressful situations.
- When stressed, the human body goes into āfight or flightā mode. Under stress, heart rate, blood pressure, respiration, pupil dilation, and perspiration increase, preparing the body for fight or flight.
- Chronic stress overactivates the sympathetic nervous system, risking cardiovascular disease and dementia.
L-theanine for Anxiety and Other Issues
A number of studies around the world have shown definite benefits to taking L-theanine for insomnia, but thatās not the only benefit. You can take L-theanine for anxiety, stress and more, according to a number of studies cited in Berkely Wellness:
- The Journal of Physiological Anthropology reports that Japanese college students were given L-theanine, resulting in decreased anxiety. They also noted that blood pressure didn’t rise as much under stress when taking L-theanine compared to a placebo.
- A Canadian study reported in Alternative Medicine Review found that L-theanine was given to boys who had ADHD (Attention Deficit Hyperactivity Disorder) and resulted in better sleep.
- Graduate students in Japan who took L-theanine reported less anxiety despite being assigned stressful pharmacy jobs, compared to students given a placebo, as reported in Pharmacology, Biochemistry, and Behavior.
- The Journal of Clinical Psychiatry reported an Israeli study showed that L-theanine decreased the symptoms of anxiety and assisted antipsychotic treatment for schizophrenics, aged 19-55.
L-theanine also has antioxidant properties. Antioxidants protect the body from harmful free radicals, which are molecules that can proliferate in the body and lead to heart disease, arteriosclerosis, and cancer.
In 2010, Dr. Michael Ritsner of the TechnionāIsrael Institute of Technology published an article in the āJournal of Clinical Psychiatryā that concluded that when 400 mg of L-theanine was added to an existing pharmacotherapeutic regimen, it produced a statistically significant reduction in the symptoms of anxiety. A 2007 study in “Biological Psychology” by Dr. Kiriya Kimura of Nagoya University found L-theanine supplementation reduced heart rate and stress hormone levels. (Source: Livestrong)
Conclusion
If conventional methods fail and you donāt want to take a prescription medication, consider L-theanine as a sleep aid. Green or black tea is readily available in most grocery stores. L-theanine is available in pill form, accessible online or at health-food stores like GNC (General Nutrition Center).
