FDA Pregnancy Categories
Category D
There is positive evidence of human fetal risk based on adverse reaction data from investigational or marketing experience or studies in humans, but potential benefits may warrant use of the drug in pregnant women despite potential risks.
Example drugs: lisinopril, alprazolam, losartan, clonazepam, lorazepam
https:// www.drugs.com/pregnancy-categories.html
i.e. If you take these drugs during pregnancy your child is really fucked. But what about the trace amounts stored in the body if taken before becoming pregnant.