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RECOVERY / PM
L-Theanine
Calm · Stress response · Sleep quality
200 mg
Part of RECOVERY / PM, taken at night.
Form, dose and role.
- What it is
- L-theanine is an amino acid found in tea leaves, studied for relaxation without sedation.
- Why DEXO chose it
- It supports a calmer mental state and the smoother wind-down that makes a nighttime routine realistic.
- Why this form
- L-theanine. Free-form L-theanine as used in human trials.
- Why this dose
- 200 mg per day matches commonly studied amounts.
- Its role in the system
- A four-week randomized trial at 200 mg/day — the amount in RECOVERY — reported improvements in stress-related and sleep-quality measures, and a 31-trial meta-analysis found evidence for improved choice reaction time after a single 200 mg dose.
The human research.
What researchers actually studied. Population. Dose. Duration. Outcome. The details that make a study useful.