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Xu H et al
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Glutathione is the most powerful antioxidant produced by the body
May Support Lean Muscle Maintenance Maintaining lean muscle gets harder with age
However, much of the research has illustrated that such an effect is a negation of caffeines ability to raise blood pressure rather than an ability of L-theanine to take a persons blood pressure down below its normal resting state.26 Also, in some research looking at L-theanine in isolation (or, more specifically, in mango sorbet), no effect on blood pressure was observed.27 It appears that L-theanine should be mostly safe for most people, but its always a good idea to talk to your doctor before introducing any new supplement into your regimen
