Vitamin A and vitamin AD generally refer to vitamin A soft capsules and vitamin AD soft capsules, which are different in composition, function and adverse reactions, as follows:

1, constitute

Vitamin A contains only vitamin A, which is a fat-soluble vitamin. Vitamin AD contains vitamin a and vitamin d and belongs to compound preparation.

2. Function

Vitamin A can maintain the integrity of skin mucosa, maintain and promote immune function and protect eyesight, and can be used to prevent and treat vitamin A deficiency such as night blindness, dry eye, keratomalacia and pachylosis. Vitamin AD can also promote the development of bones and teeth, and can be used to prevent and treat vitamin AD deficiency diseases such as night blindness, dry eye, rickets and rickets.

3. Adverse reactions

If you take too much vitamin A for a long time, it may cause serious rash, liver fibrosis, bone marrow suppression and other adverse reactions; If you take too much vitamin AD for a long time, it will lead to chronic poisoning, usually manifested as bone and joint pain, itchy skin, chapped lips, headache, nausea and so on.