After pregnancy, pregnant women’s body enzymes have certain changes, the metabolic process of certain drugs have a certain impact. Drugs are not easy to detoxification and excretion, there can be accumulation of toxicity, in the early stages of pregnancy when fetal organs are formed, the drug has a certain impact on the fetus, so the cold is best not to take drugs. However, everything is divided into two, pregnant women with a certain risk of medication, is not completely unhelpful. For example, early pregnancy need to supplement folic acid, pregnancy need to supplement vitamin drugs, etc., can meet the mother-to-be and the baby for nutritional intake needs. At the same time, some of the disease itself on the fetus, the mother’s impact is far more than the impact of drugs, then you should weigh the pros and cons, under the guidance of the doctor, the rational use of drugs.