 Prescription drugs taken during pregnancy such as streptomycin, tetracycline, some antidepressants, progestin, synthetic estrogen, and Accutane, as well as over-the-counter drugs such as diet pills, can result in teratogenic outcomes for the developing embryo/fetus.Additionally, high dosages of aspirin are known to lead to maternal and fetal bleeding, although low-dose aspirin is usually not harmful.Newborns whose mothers use heroin during the gestational period often exhibit withdrawal symptoms at birth and are more likely to have attention problems and health issues as they grow up.