Theanine

Lower anxiety/stress

Mood lift +56%

Less stress markers

Lower anxiety/stress markers

Reduced stress response

Anxiety↓; sAA↓

Stress markers↓; BP↓

Anxiety↓; HR↓

Mood/anxiety: improved

Sleep/stress/pain: improved

Sleep onset −24 min

Sleep quality improved

Attention + fast RT

Working memory + accuracy

Alertness, -tiredness

Inflammation↓, immunity↑

Flu protection↑ 73%

Faster sleep onset

Longer sleep +45min

Better sleep quality

Attention/working memory ↑

Memory recall modest ↑

Attention/RT +15–50 ms

Memory accuracy +

faster, sharper attention

−30 to −150 ms

Alertness/attention +ms

Alertness/stress −tiredness

Alertness/RT −28ms

Stress markers ↓

Relaxation/alertness ↑

Attention speed/accuracy

+15–20 ms

Distraction/alertness

Alertness, less fatigue

Reaction time, +15–20 ms