I have fatty liver but no alchol, no hepititis, not over weight chlosteral good, severe nausea for several years, taking phenergan (promethazine) have GI app. In six wk?

Are you diabetic? Nausea over several years raises the possibility of gastroparesis (sluggish stomach emptying) that often accompanies diabetes of longstanding. Diabetes, as you may glean, is an independent risk factor for fatty liver, along with the other risks you mentioned: alcohol, obesity, high cholesterol.

Related Questions

Fatty liver, no diabetes, no alchol, no hepititis, severe nausea any answers, phenergan (promethazine) and temasipan only meds?

Obesity could be. Obesity could be the cause in the absence of diabetes. Change your diet. Avoid processed foods avoid high fat foods. Read more...
Diet. Fatty likely from non alcoholic fatty liver. This is likely from too much sugar in diet. This is likely from processed foods. Try more organic diet. If drinking soda, try holiday from these beverages.
https://articles.mercola.com/sites/articles/archive/2015/11/11/non-alcoholic-fatty-liver-disease.aspx.