1, vitamin A is involved in the visual function of eyes. People can see things around them clearly in the dark mainly by rod-shaped optic cells on the retina of the eye, and rhodopsin contained in rod-shaped optic cells is a compound formed by the transformation of vitamin A.

2. Vitamin B 1 can maintain the activity function of nerve and heart, regulate gastrointestinal peristalsis and promote growth and development. Vitamin B2 is also called riboflavin. Vitamin B2 plays an important role in metabolism.

3. Vitamin C plays an important role in the production of antibodies and red blood cells, and it can also prevent scurvy. Vitamin C exists only in fresh fruits and vegetables. Because vitamin C is delicate, the maturity, storage conditions and storage time of fruits and vegetables will affect its vitamin C content.

3. Vitamin D can regulate the metabolism of calcium and phosphorus in the body, thus making it easier for the intestine to absorb calcium and phosphorus, thus maintaining the concentration of calcium and phosphorus in the blood and making bones and teeth develop normally.

Extended data:

Precautions:

1, avoid taking it before meals: taking vitamin B 1 after meals is most beneficial to its absorption. Because vitamin B 1 is water-soluble, if taken on an empty stomach, it will be quickly absorbed into the blood, and then excreted through the kidney before being used by the human body, thus making the drug unable to fully play its role.

2. Avoid using it together with aminophylline (an alkaline drug): Vitamin B 1 is unstable in alkaline environment, and will decompose rapidly, which will damage it and reduce its efficacy or even fail.

3. Avoid using it with medicinal charcoal: Vitamin B 1 can be adsorbed by medicinal charcoal, thus reducing the efficacy. If combined application is needed, vitamin B/KLOC-0 can be taken orally for 2-3 hours before taking medicinal charcoal.

4. Avoid drinking alcohol: Because alcohol can damage gastrointestinal mucosa, hinder the operation function of intestinal mucosa, and then reduce the absorption and utilization of vitamin B 1.

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