Tag: L theanine effects

According to a study published in the journal *Nutrients*, the amino acid L-theanine, which is abundant in matcha, has sleep-enhancing properties. So, why do I feel sleepy after drinking matcha? The phenomenon is often attributed to the calming effects of L-theanine counteracting caffeine's stimulation, a mild caffeine crash, or even individual sensitivity.

Scientific studies show that L-theanine is rapidly absorbed by the body, typically beginning to have an effect within 30 to 60 minutes after ingestion. So, while you may not feel the full impact immediately, the calming benefits of L-theanine start working relatively quickly.