1, prevent night blindness and vision loss, and help to treat various eye diseases (vitamin A can promote the formation of ocular photosensitive pigments);

2. It has the function of resisting respiratory infection;

3. Help the immune system to function normally;

4. You can recover as soon as possible if you are sick;

5, can maintain the health of the tissue or organ surface;

6, help to get rid of age spots;

7. Promote development, strengthen bones and keep skin, hair, teeth and gums healthy.

8, can treat dry eye, keratomalacia, dry skin. In addition, it is also effective for burns, frostbite and ulcers.

Foods rich in vitamin A: spinach, carrots, apricots, red peppers, egg yolks, cod liver oil, tomatoes, pumpkins, ribs and animal livers.

Excessive intake of vitamin A can cause poisoning syndrome. According to research, infants taking vitamin A will cause acute poisoning if the dose exceeds 300,000 international units at a time. If you ingest 50,000-654.38+million international units every day for about 6 months, chronic poisoning may occur.

Extended data:

Consequences of vitamin a deficiency:

1, which can cause night blindness in severe cases;

2, it can lead to the decline of cellular immunity;

3, the skin is easy to dry, keratinized hyperplasia, desquamation, and the nails are streaked, tarnished, locusts are cracked, and hair is easy to fall off.

4. When vitamin A is deficient, the balance between osteoblasts and osteoclasts is destroyed, or the bone hyperplasia is caused by the enhancement of osteogenic activity, or the formed bone is not absorbed. If pregnant women lack vitamin A, it will directly affect fetal development.

Baidu encyclopedia-vitamin a