Understand your green poop symptoms with Buoy, including top 10 causes and Make sure you drink plenty of water and fluids (Gatorade, Pediatlyte) to Top Symptoms: nausea, stomach bloating, bloating after meals, vomiting, pain below . Jul 22, Learn what causes green poop and when you should be worried. After a day or so everything should go back to normal – no need for a doctor visit. Alcohol consumption is another common reason for green poop. Oct 3, Find out what causes green stool, what it means and what to do next. Consumption of large quantities of coffee and alcohol can cause a It clears off after a few days and the stool color should change to brown or yellow.