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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. Tryptophan - Wikipedia

   en.wikipedia.org/wiki/Tryptophan

   Tryptophan (symbol Trp or W) [3] is an α-amino acid that is used in the biosynthesis of proteins.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.

5. 5-Hydroxytryptophan - Wikipedia

   en.wikipedia.org/wiki/5-Hydroxytryptophan

   5-HTP is produced from the amino acid tryptophan through the action of the enzyme tryptophan hydroxylase. Tryptophan hydroxylase is one of the biopterin-dependent aromatic amino acid hydroxylases. Production of 5-HTP is the rate-limiting step in 5-HT (serotonin) synthesis. 5-HTP is normally rapidly converted to 5-HT by amino acid decarboxylase. [1]

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

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

   L-theanine is an amino acid, a.k.a. a molecule that helps build protein in the body. It’s often talked about as being found in green tea, but it's also present in other herbal brews such as ...

7. What Is Low Testosterone & What Causes It? - AOL

   www.aol.com/low-testosterone-causes-125700734.html

   These drugs make it easier to get and maintain arousal by relaxing the smooth muscle in the penis, which increases penile blood flow. Our guide to the most common ED treatments explains more about ...