1 interaction related to alpha waves
L-theanine, an amino acid from green tea, produces a relatively quick sense of calm focus by increasing alpha brain-wave activity and gently nudging GABA and other neurotransmitters. Ashwagandha works more slowly, modulating the stress (HPA) axis over weeks of daily use. Because they act through different pathways on different timescales, they are commonly stacked for stress, and there is no known harmful interaction. Importantly, no human trial has tested the combination itself, so the pairing is a mechanistic rationale rather than a proven synergy.
