It is basic common knowledge that you need to take folic acid supplements during pregnancy preparation. The daily amount of folic acid supplement during pregnancy preparation is between 0.4 and 1mg. Ordinary daily diet cannot meet the requirement of folic acid supplementation, so you need to take folic acid tablets to supplement folic acid. Commonly used folic acid tablets are 0.4mg/tablet, also known as Silien, and Elavil, which contains 0.8mg of folic acid per capsule, both of which are commonly used during pregnancy preparation. It is recommended to take folic acid for 3 months during pregnancy preparation to help increase the level of folic acid in the body and to prevent neural tube abnormalities in the fetus. In addition to folic acid tablets supplementation, green leafy vegetables and animal liver also contain high levels of folic acid.