Vitamin C generally refers to vitamin C. Folic acid should not be taken with vitamin C because it tends to lose its own effect. Folic acid is a B vitamin, often widely found in animal and plant foods, such as chicken liver, pork liver, lettuce, beets, spinach, etc. Folic acid is easily destroyed in an acidic environment. If folic acid is taken with vitamin C at the same time, a large amount of vitamin C will accelerate the excretion of folic acid and cause a decrease in the concentration of folic acid, resulting in less folic acid being absorbed by the body, thus reducing the effect of folic acid. Therefore, folic acid should not be taken at the same time as vitamin C. If it is necessary to take both, it is recommended to try to space them out by more than half an hour. Folic acid itself is involved in the maturation process of red blood cells, and if deficient it can cause megaloblastic anemia. Folic acid also plays an important role in the growth and development of the fetus, including the maturation of the neural tube and the refinement of other brain functions. In addition, folic acid during pregnancy can reduce the probability of eclampsia in pregnant women, as well as prevent cardiovascular disease due to elevated homocysteine, and therefore, pregnant women should pay attention to folic acid supplementation.