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May 25, 2013
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Theanine

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How does Theanine work?

Theanine has a chemical structure very similar to glutamate, a naturally occurring amino acid in the body that helps transmit nerve impulses in the brain. Some of the effects of theanine appear to be similar to glutamate, and some effects seem to block glutamate.

Are there safety concerns?

Theanine seems to be safe when used once per week for three weeks. It's not known if daily use for prolonged periods of time is safe.

Do not use theanine supplements if:
  • You are pregnant or breast-feeding.
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Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

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