Pregnancy Drugs FDA classifies drugs into five categories based on the magnitude of their effect on the fetus: Pregnancy A Adequate number of well-controlled human studies have shown no adverse effects on the fetus in early pregnancy (and no indication of such effects in late pregnancy). Pregnancy B Animal studies have failed to show an adverse effect on the embryo, but there is a lack of sufficient number of well-controlled human studies to confirm this; or animal studies have shown a possible adverse effect on the embryo, but there are sufficient number of well-controlled human studies showing no adverse effect on the fetus during pregnancy. Pregnancy C Although animal studies have shown that the drug may have adverse effects on the embryo, there are no sufficient number of well-controlled human studies to confirm this; however, due to therapeutic needs, the drug should be used in pregnant women on balance, even if there is a potential for such effects. Pregnancy D The drug is known to be potentially harmful to the fetus from ‘adverse reaction’ information obtained from market research or information feedback, or from human studies; however, due to therapeutic needs, the drug should be used in pregnant women even if there is such potential, on balance. Pregnancy X Where the drug has been shown to cause embryonic malformations from animal or human studies and/or ‘adverse reaction’ information from market research or feedback, or from human studies, and the drug is known to be potentially harmful to the fetus, it is clear on balance that the drug should not be used in pregnant women, even if required for therapeutic reasons. The drug should not be used in pregnant women, even if it is necessary for treatment. The relationship between psychiatric medication and pregnancy and fetus is listed as follows: 1. All antipsychotics: pregnancy C except clozapine, which is pregnancy B; 2. 3, anti-anxiety (sleeping) drugs: benzodiazepines (Valium) such as alprazolam, eszopiclone, clonazepam, lorazepam, etc., are pregnancy D, zolpidem (Synthroid) is pregnancy B; 4, mood stabilizers: lithium carbonate, carbamazepine, sodium valproate, pregnancy D, lamotrigine, pregnancy C; 5, treatment of dementia drugs: AriZen, Esnon, are pregnancy C. According to domestic and foreign expert opinion If you are pregnant while suffering from a mental illness, you can follow the following instructions: 1. When you are pregnant, you can use antipsychotics or antidepressants (excluding methylphenidate and paroxetine), and generally speaking, there are no teratogenic problems. 2, the general anti-anxiety (sleeping) drugs of the tranquilizer class are teratogenic, you can choose zolpidem (Sinox). 3, lithium carbonate, carbamazepine, sodium valproate may be teratogenic, or can be changed to lamotrigine.