Folic acid is taken by women of childbearing age and supplementation can be used to prevent malformations in fetal neural tube development. If you have vomiting symptoms as soon as you take folic acid, consider that it is not a problem of folic acid itself, but may be due to early pregnancy reaction, which can be relieved by the following methods: 1. It is recommended to crush folic acid and put it into water or rice. Folic acid, as a common drug in early pregnancy, usually does not have adverse reactions in the digestive system. If you still vomit after crushing folic acid, you can take folic acid directly into rice, that is, take it together with rice, which can alleviate the adverse reactions; 2, early pregnancy reaction occurs in the morning, you can put the time of taking folic acid at noon or half an hour before dinner, which can also alleviate the symptoms of vomiting when taking folic acid, and usually drink ginger water can also alleviate early pregnancy reaction; 3, for people who are not well adapted to folic acid tablets, you can drink ginger water. People who can not adapt well to folic acid tablets can eat more food containing folic acid, such as green leafy vegetables.