My son is 23 years old. He has recurring episodes of vomiting, chills, fever and vomits bright green bile for hours/days at a time, usually once every month or two. He had his gall bladder removed 2 months ago and we thought that was the end of it but he is having another episode today. He takes Zofran, sertraline, Zoloft (for anxiety to calm his stomach) and Dexilant. He is unable to even take these meds during an episode because of the vomiting. The only condition he s been diagnosed with is Barrett s Esophagus. Any help or advice would be appreciated.