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2. What You Should Know Before Taking a L-Theanine ... - AOL

   www.aol.com/know-taking-l-theanine-supplement...

   Tea's combination of caffeine and L-theanine can give you a calm yet alert mental state that could help boost productivity and effectiveness,” Ingram explains, citing a 2021 study on caffeine ...

3. Theanine - Wikipedia

   en.wikipedia.org/wiki/Theanine

   The name theanine usually refers to the enantiomer L-theanine, which is the form found in tea leaves from which it is extracted as a powder. [4] [6] The right-handed enantiomer, D-theanine, is less-studied. Theanine is sold as a dietary supplement and is considered to be safe at doses up to 250 milligrams (mg) by the US Food and Drug ...

4. The Exact Right Time to Take L-Theanine - AOL

   www.aol.com/lifestyle/exact-time-l-theanine...

   The bottom line: While L-theanine may have the potential to enhance your life and benefit your health in certain areas, “always discuss your individual potential risks and benefits of starting a ...

5. 7 Ways to Improve Your Sleep Hygiene & Get a Good Night's Rest

   www.aol.com/7-ways-improve-sleep-hygiene...

   L-theanine. An amino acid in tea leaves, L-theanine reduces anxiety and promotes relaxation without sedation. Keep in mind that each of these has pros and cons, and more research is needed to ...

6. Aromatic amino acid - Wikipedia

   en.wikipedia.org/wiki/Aromatic_amino_acid

   Tryptophan is the precursor to 5-hydroxytryptophan and then serotonin, tryptamine, auxin, kynurenines, and melatonin. [6] Tyrosine is the precursor to L-DOPA, dopamine, norepinephrine (noradrenaline), epinephrine (adrenaline), and the thyroid hormone thyroxine. It is also precursor to octopamine and melanin in numerous organisms. [6]

7. Tryptophan - Wikipedia

   en.wikipedia.org/wiki/Tryptophan

   Tryptophan contains an α-amino group, an α-carboxylic acid group, and a side chain indole, making it a polar molecule with a non-polar aromatic beta carbon substituent. Tryptophan is also a precursor to the neurotransmitter serotonin, the hormone melatonin, and vitamin B 3 (niacin). [4] It is encoded by the codon UGG.