SynNutra GastroChill, aka “G-Chill,” is a unique 2-in-1 supplement that combines the focus-enhancing stress-reducing benefits of SynChill with the digestive properties and ulcer management of GastroMend. G-Chill contains natural, active serotonin precursors for mood and composure support, plus high-potency, gut-protective plant extracts and vitamins. G-Chill can be fed regularly or 2-4 hours before stressful events.