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Moderating alcohol intake is recommended since excessive consumption can negatively affect Vitamin B12 levels
This is because a related chemical - L-carnitine - appears to interfere with thyroid hormones
If you havent recently eaten when taking L-theanine, you may feel the effects a bit more quickly and intensely (similar to drinking caffeine with a meal versus on its own/on an empty stomach)
Rare: mild nausea (brief, self-resolving)
Carnitine Inborn Errors Metabolism Molecules
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