Chicken liver contains iron 13. 1 mg, and protein 16.6 mg. Chicken liver is rich in heme iron, zinc, copper, vitamin A and vitamin B, which is a good choice for iron supplementation. Liver is rich in cholesterol, which will increase if it is eaten for a long time, and chicken liver contains a lot of vitamin A. If it is eaten too much, it will be acutely poisoned and have symptoms such as headache, dizziness, nausea, vomiting and diarrhea. It's okay to eat occasionally, but it's definitely not good to eat every day. It is recommended not to eat it every day, 2-3 times a week is enough.