1. Chicken liver, pork liver and other animal offal and lean meat are rich in vitamin B1.

2. Milk, soybeans, and green leafy vegetables are rich in vitamin B2.

3. Vitamin B3 is widely found in liver, milk, eggs, vegetables, yeast, mushrooms, broccoli, whole grains and some fruits.

4. Vitamin B5 is widely present, especially in liver, milk, eggs, vegetables and all protein-containing foods.

5. Vitamin B6 is widely found, especially in liver, milk, egg yolks, vegetables, fish, whole grains, and beans.

6. Vitamin B7 is widely found, especially in liver, milk, egg yolk, vegetables, yeast, fruits, and brown rice.

7. Vitamin B12 comes from animal foods, including liver, egg yolk, meat, shellfish, milk and dairy products. Extended information

Vitamins are a type of trace organic substances that humans and animals must obtain from food to maintain normal physiological functions. They play an important role in human growth, metabolism, and development. Vitamins neither participate in the formation of human cells nor provide energy to the human body.

Vitamins are a class of organic compounds necessary to maintain good health. This type of substance is neither a raw material for body tissue nor a source of energy in the body, but a type of regulatory substance.

Reference material: Baidu breaks it open-vitamin B