How to Use theanine in a Sentence

theanine

noun
Definition of theaninenext
  • Green tea is a source of the amino acid of the amino acid L-theanine, a compound that's linked to alertness and mood-enhancement.
    — Zee Krstic, Good Housekeeping, 6 Jan. 2020
  • Matcha is also loaded with l-theanine, an amino acid found in black tea, green tea, and mushrooms.
    — Ola Faleti, chicagotribune.com, 17 Apr. 2021
  • It is also known for having L-theanine, which can help reduce the risk of Alzheimer's or Parkinson's disease.
    — Sudiksha Kochi, USA TODAY, 19 June 2021
  • One is an amino acid only found in tea, called l-theanine, which in the last decade has been added to drinks that promote focus and concentration.
    — Ben Guarino, The Denver Post, 2 May 2017
  • That’s the logic behind Zeno’s formula, as L-theanine is proven to enhance focus and calm.
    — Benjamin Adams, Forbes, 10 Sep. 2021
  • Cinnamon can help control blood sugar and theanine and caffeine in chai tea can help to keep us focused during the day.
    — Lisa Drayer, CNN, 14 Dec. 2021
  • Our caffeine-free mixture of chromium, seaweed extract + L-theanine does the trick.
    — Amber Smith, Discover Magazine, 3 Dec. 2022
  • And while researchers continue to evaluate the capacity of the amino acid l-theanine, also found in tea leaves, to...
    — Aleksandra Crapanzano, WSJ, 11 June 2020
  • There are different levels of L-theanine depending on which type of true tea is consumed.
    — Sudiksha Kochi, USA TODAY, 19 June 2021
  • Green and black tea are rich in anti-aging polyphenols and contain theanine, an amino acid that promotes relaxation.
    — Lisa Drayer, CNN, 14 Mar. 2022
  • Borgwardt said the benefits are likely not the consequence of a single component but linked to the presence of both caffeine and L-theanine.
    — Katie Hunt, CNN, 21 May 2020
  • Suntheanine is a form of L-theanine that helps promote relaxation without any drowsiness.
    — Andrea Navarro, Travel + Leisure, 17 Mar. 2021
  • The amino acid L-theanine and caffeine are also found in green tea — a combination that promotes brain function and energy.
    — Spoon U, Teen Vogue, 29 July 2017
  • The drinks include hemp extract, American ginseng, L-theanine, and schisandra.
    — Brierley Horton, al, 14 Jan. 2020
  • If that isn’t cool enough, this matcha also provides drinkers with plenty of L-theanine, which is a natural amino acid found in tea that promotes calmness and prevents caffeine jitters.
    — Kevin Cortez, Popular Mechanics, 5 Oct. 2022
  • The new line features two gummies: the Energy provides a jitter-free buzz with L-theanine and green tea leaf extract, while the six milligrams of melatonin in the Sleep formula encourage sleep.
    — Anna Haines, Forbes, 28 Oct. 2021
  • The ingredients in these treats include chamomile, passionflower, and L-theanine.
    — The Salt Lake Tribune, 8 May 2022
  • Pepsi chose to use l-theanine, a workhorse ingredient in relaxation drinks.
    — Elizabeth Lopatto, The Verge, 13 Jan. 2021
  • Its illuminating complex combines golden silk essence, Japanese pearl and theanine to combat the damage that comes with dry skin.
    — Grooming Playbook, The Salt Lake Tribune, 26 May 2022
  • A cup of decaffeinated tea, rich in stress-reducing theanine, is a perfect bedtime ritual.
    — By Sheah Rarback, miamiherald, 30 May 2017
  • Those researchers attributed the benefits to the combination of L-theanine (a compound found naturally in tea leaves) and caffeine.
    — Brierley Horton, Ms, Better Homes & Gardens, 15 May 2020
  • An amino acid concentrated in certain teas (such as green tea), L-theanine has been shown to promote alpha brain waves, which are the same relaxing waves that occur during meditation.
    — Amy Capetta, Woman's Day, 19 May 2022
  • Because of this, some research indicates that supplementing with L-theanine can help protect against oxidative stress.
    — Amy Capetta, Woman's Day, 19 May 2022
  • Green tea has less caffeine than coffee, is a rich source of the antioxidant epigallocatechin gallate, or EGCG, and also contains the amino acid theanine, which may help reduce stress and promote calm feelings.
    — Lisa Drayer, CNN, 16 Apr. 2020
  • Among the many health benefits of this ancient, powdered version of green tea is L-theanine, which recent studies have found can increase mental clarity, cognitive function and relaxation.
    — Amy Drew Thompson, orlandosentinel.com, 5 Mar. 2021
  • Tea is one of the healthiest beverages around; most natural blends are loaded with antioxidants, a moderated amount of energy-boosting caffeine and an amino acid known as L-theanine.
    — Zee Krstic, Good Housekeeping, 21 Nov. 2022
  • Where coffee used to be a standard choice, natural ingredients such as l-theanine and lion's mane mushroom are now being utilized due to their brain boosting capabilities.
    — Amber Smith, Discover Magazine, 15 Jan. 2023
  • Leaves are harvested after several weeks of shaded growth that encourage a higher production of chlorophyll, which creates that beautiful color along with that of L-theanine and caffeine.
    — Amy Drew Thompson, orlandosentinel.com, 5 Mar. 2021
  • Green tea in particular has less caffeine than coffee, is a rich source of the antioxidant epigallocatechin gallate, or EGCG, and also contains the amino acid theanine, which may help reduce stress and promote calm feelings.
    — Lisa Drayer, CNN, 6 Nov. 2020
  • In the past, my veterinarian recommended L-theanine supplements for anxiety and glucosamine chewable for joint pain.
    — Cathy M. Rosenthal, San Antonio Express-News, 14 July 2022

Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'theanine.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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