You should eliminate all proccessed foods, wheat, gluten, red meat, dairy, high choline foods,and only drink water. Search for low choline diet, vegan, and low fodmap diet. Those will help.
Supplement like vitamin b2, zinc, chlorophyll, and probiotics like Florastor, and acidophilus might work (its a hit or miss with certain people.) And while on your restricted diet you must stick to it for months, progress comes slow.