Kinetics of L-Theanine Uptake and Metabolism in Healthy Participants Are Comparable after Ingestion of L-Theanine via Capsules and Green Tea. - Scheid, Lisa; Ellinger, Sabine; Alteheld, Birgit; Herholz, Hannes; Ellinger, Jörg; Henn, Thomas; Helfrich, Hans-Peter; Stehle, Peter (Journal of Nutrition, 2012)