L-Theanine

L-Theanine is an amino acid found naturally in green tea that promotes alpha brain wave activity — associated with a state of calm, focused alertness without sedation. Unlike benzodiazepines or other anti-anxiety medications, L-theanine does not cause drowsiness or cognitive impairment. It works synergistically with caffeine (the natural combination in green tea) — reducing caffeine's anxiety-inducing effects while preserving its focus benefits. Clinical studies show it reduces stress responses and anxiety within 30–60 minutes of ingestion.

Women with anxiety, stress, difficulty concentrating under pressure, or those who want calm focus without drowsiness.

100–200 mg L-theanine daily. Can be taken as needed for acute stress (works within 30–60 minutes) or daily for consistent effect.

Acute calming effects within 30–60 minutes. Long-term anxiety reduction with daily use over several weeks.

Extremely safe — one of the best-tolerated supplements available. May cause mild headache in some people.

Generally considered very safe. Check with doctor if taking blood pressure medications (may have additive blood-pressure-lowering effect).