I had a Nissen in 2015 in Iowa...had all sorts of GI problems, Lost 50 pounds from 195, 5'10" male... Iowa could not figure out what was wrong...went to Mayo Minnesota..they diagnosed it in 3 tests over a few hours. Gastropaneisis...doc said my Nissen could not be undone as the problems would get worse.. He noted that 1 in 6 Nissens FAIL.. so living with it is the key..Gas, bloating, yes... vomiting. Occasionally... feeling as if food is caught somewhere and must be thrown up, sleeping tilted up so gravity does the stomach emptying...My friends say I am always grazing..eating small portions, no soft breads, no leafy greens unless chopped fine or blended.. no big pieces of anything except ice cream . I'm 82. It is a life changing event.. and few understand what you are going through ..I take the Nexium genaric, and Mirazapine.. to help me think I want to eat... feeling the best when the stomach is empty, like when you awaken, is not sustainable...Ken