The function and main treatment of the two drugs are the same, both are used for the prevention and treatment of vitamin A and D deficiency, such as rickets, night blindness, pediatric hand and foot twitching, in terms of usage and dosage are almost the same, both are once a day, one capsule at a time, in addition, both have adverse effects, also almost similar, long-term use or overdose can The early manifestations of chronic toxicity are swelling and pain in the bones and joints, itching of the skin, and dryness and cracking of the lips and mouth. Therefore, both drugs should not be taken in excess, and should not be taken for a long time. Therefore, these two drugs are almost the same in terms of efficacy, indications and adverse reactions, and it is not possible to say which one is better.