Amino Acid
L-Theanine
Strong EvidenceRecommended Dose
100–200 mg daily
Timing
Morning with caffeine, or evening for relaxation
Mechanism of Action
Crosses the BBB and increases alpha brain wave activity. Modulates GABA, serotonin, and dopamine. Promotes relaxed alertness by reducing excitatory glutamate activity.
Side Effects & Safety
Very well-tolerated. Extremely rare reports of mild headache or dizziness. No known serious side effects.
Synergies
CaffeineAshwagandhaMagnesium Glycinate