Vitamin A and vitamin D are essential nutrients for children's growth and development. Both of them can promote the absorption of calcium and enhance immunity, and at the same time, they can obviously promote the baby's height growth, visual development, intellectual development and anemia prevention. Because the deficiency of vitamin A and vitamin D is still common in infants in China, it is suggested that infants should be supplemented with vitamin AD every day after birth to ensure their physiological needs and meet the needs of growth and development.

However, there are still some doctors and parents of children who have doubts about vitamin AD, and think that it is a "three-point poison", and they are worried that long-term vitamin AD supplementation will be excessive, so many parents choose vitamin AD as a health food instead of or take a supplementary way.

So, can vitamin AD be taken for a long time?

The concept of drugs is misunderstood.

Drugs are generally divided into prescription drugs (RX) and over-the-counter drugs (OTC). Among them, prescription drugs can only be prepared, purchased and used by medical practitioners. In contrast, over-the-counter drugs can be purchased without a doctor's prescription and used according to the drug label and instructions, so over-the-counter drugs are safer.

In other words, over-the-counter drugs are safe and effective drugs that have been proved by long-term clinical application, and can be used to treat and prevent diseases, and non-professionals can also use them safely.

According to the current classification of OTC drugs, it can be divided into class A (red OTC logo) and class B (green OTC logo). Both Class A and Class B OTC drugs can be purchased in pharmacies, and Class B OTC drugs are safer. In addition to selling in pharmacies, it can also be sold in supermarkets, hotels, department stores and other places.

The vitamin AD drug mentioned in this paper belongs to Class B OTC, which is the drug with the highest safety level. Can be used for promoting children's growth and development (skeletal development, height growth, visual development, immune function, etc.). ) and prevent diseases caused by nutritional deficiency (such as rickets, night blindness, dry eye, iron deficiency anemia, etc. However, some medical workers still have doubts. Since it is a drug, do infants need to take it for a long time?

In fact, as mentioned above, Class B OTC is safe, effective and easy to purchase. Compared with other OTC and prescription drugs, it is safer. Consumers can buy drugs directly from pharmacies or pharmacies, hotels and supermarkets without a doctor's prescription, and the compliance of long-term use and the convenience of purchasing drugs are better.

Class B OTC drugs are very common in our life, such as some buccal tablets for clearing throat and moistening lung, chewable tablets for invigorating stomach and promoting digestion, etc., which are widely used in clinic. Vitamin AD drops also belong to Class B OTC drugs. The contents of vitamin A and vitamin D meet the recommended daily intake of infants recommended by Nutrition Society. It is a preventive nutritional supplement medicine that can be taken for a long time, which can effectively prevent common nutritional deficiency diseases of infants and young children at an early stage, reduce the risk of illness and maintain the normal growth and development of children.

The drug instructions were misread.

Not all drugs have their own "three-point toxicity", and many so-called toxicity are caused by the usage, dosage, course of treatment, precautions, contraindications and so on that are not marked in the instructions.

For example, the instructions of vitamin AD drops are marked as "chronic poisoning caused by long-term overdose", which is taken out of context by many medical workers and parents of children as "long-term use = poisoning". In fact, this is a typical misunderstanding of the instructions!

In fact, both "long-term" and "excessive" conditions must be met at the same time, so there may be a risk of chronic poisoning. However, the method of taking 1 capsule every day marked in the instructions refers to the normal daily demand of infants. There is no risk of poisoning as long as the dosage is taken strictly according to the instructions. So to what extent will long-term "overdose" be poisoned?

The textbook Pediatrics defines the toxic dose of vitamin A and vitamin D:

Acute vitamin A poisoning: more than 300,000 units per dose; Chronic poisoning: 50-65438+100000 units/day, taken continuously for more than 6 months.

Take 20,000-50,000 IU of vitamin D every day for several weeks or months.

Therefore, the difference between the daily 1 vitamin AD drops and the toxic dose is 108,000 miles. If you stop taking medicine because you are worried that you will be poisoned every day, infants are prone to vitamin AD deficiency and even cause diseases.

A number of authoritative international and domestic guidelines suggest that newborns should be given preventive vitamin AD after birth to maintain growth and prevent rickets and other diseases. For example, authoritative guides such as Diagnosis, Treatment and Prevention of Vitamin A Deficiency, Recommendations for Prevention and Treatment of Vitamin D Deficiency and Vitamin D Deficiency Rickets, and Recommendations for Feeding Premature Infants and Low Birth Weight Infants after Discharge all recommend the normal daily preventive doses of vitamin AD: vitamin A 1500-2000 IU and vitamin D 400-800 IU.