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L-Theanine

nootropics · Calm focus · anxiety · sleep · caffeine synergy

Strong evidence

L-Theanine is a non-protein amino acid found in green tea. It promotes alpha brain waves associated with relaxed alertness. Pairs exceptionally well with caffeine for calm, focused energy.

⏱️ Timing & dosage for L-Theanine

Best time to take

Morning with coffee/caffeine, or bedtime for sleep; flexible timing

Suggested dose

100–200mg; pair with 50–100mg caffeine for best effect

✅ Benefits of L-Theanine

  • Alpha wave promotion (relaxed alertness)
  • Anxiety reduction without sedation
  • Caffeine synergy — smoother energy
  • Sleep quality improvement
  • Blood pressure reduction

⚠️ Side effects & risks

  • Very safe — widely consumed in tea for centuries
  • May cause mild drowsiness in some at high doses

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⚕️ Medical Disclaimer: Nothing on Stack Ritual constitutes medical advice. The information provided is for educational purposes only. Always consult your doctor or a qualified healthcare provider before beginning, changing, or stopping any vitamin, supplement, or wellness regimen.