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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 ...
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 ...
“Research suggests that L-theanine may help support stress management, sleep and potentially weight management,” says Colleen Tewksbury, PhD, RD, LDN, national spokesperson for the American ...
Alpha-GPC – L-alpha glycerylphosphorylcholine has been studied only in the context of cognitive performance alongside other substances such as caffeine. [34] Choline bitartrate – Choline bitartrate is a tartaric acid salt containing choline (41% choline by molecular weight). One meta-analysis found choline bitartrate to be ineffective at ...
Dr. Brian Licuanan, board-certified clinical psychologist, offers expert advice to ensuring good quality sleep over the holidays, which can pose challenges. 5 sleep tips to get better rest during ...
Sleep disorders are an area that can produce stress and mental health issues. Relaxation may help reduce insomnia in those who have sleeping disorders. Those with insomnia may even give up sleeping aids just by practicing relaxation techniques. [47] Avoiding unnecessary medication or sleep aids may help health.
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