Cymbalta (duloxetine) is a serotonin-norepinephrine reuptake inhibitor (SNRI) that may help modulate neurological symptoms in Visual Snow Syndrome by enhancing neurotransmitter signaling and potentially reducing cortical hyperexcitability. By increasing serotonin and norepinephrine levels in the brain, it can potentially mitigate sensory processing abnormalities and provide symptomatic relief for visual and neurological disturbances associated with the syndrome.