Can't have nutritional yeast; it has high niacin (vitamin B3) count

Nutritional yeast has a lot of niacin (vitamin B3), which can be bad for your liver. I have stage 1 fibrosis, and since I went vegan, my levels have actually gotten better and are slowly reversing my fatty liver. I've noticed a lot of health improvements, but my doctor wants me to stay away from processed vegan foods, turmeric, red yeast rice, green tea extract, vitamins A and B, and kava kava, but that's just me.