Taking 2.5mg olanzapine is not recommended for pregnancy, and the risk of this drug to pregnancy is uncertain. Olanzapine is an antipsychotic drug that is commonly used to treat schizophrenia, mania, and other psychiatric disorders. Olanzapine is a pregnancy Category C drug, which means that there are no adequate experimental studies to prove its effect on pregnancy and its safety is uncertain, so it should only be taken during pregnancy if the benefit of taking the drug is greater than not taking it. Olanzapine may affect the development of the fetus, so to be on the safe side, pregnancy is not recommended while taking 2.5mg Olanzapine. For women with reproductive requirements, it is better to control the condition and wait for it to stabilize and stop taking the drug before getting pregnant.