Theanine is an amino acid found in tea that is also used in dietary supplements. This segment from the eMedTV Web site explores how theanine supplements may work and offers more information on their uses, potential effects, and effectiveness.
Theanine supplements may be beneficial for Alzheimer's disease, anxiety, and high blood pressure. This eMedTV resource covers other possible benefits of theanine and explains how the amino acid may work for these conditions.
There are no known theanine side effects at this time. As this eMedTV page explains, however, this may reflect a lack of theanine studies large enough to find side effects; it probably does not indicate that theanine really is free of side effects.
A maximum safe theanine dosage has not been established at this time. This article from the eMedTV archives discusses theanine dosing in more detail and explains how to find a supplement from a trustworthy manufacturer.
Theanine supplements are used for various conditions, but a common question is, "Is theanine safe?" This eMedTV Web page explores the safety of theanine. Warnings and precautions on who may not be able to safely take the supplement are also included.
Blood pressure medications and stimulants could cause drug interactions with theanine. This section of the eMedTV library describes some of the problems that may occur as a result of combining these medicines with theanine supplements.
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