What is a teratogenic drug?

A teratogenic drug is specifically defined as a substance that can cause developmental abnormalities or damage to a fetus when a pregnant individual is exposed to it. This includes various types of birth defects, which can affect physical structures, function, and overall development of the fetus. Understanding that teratogenic effects can occur at different stages of pregnancy is crucial for midwifery practice, as certain drugs may pose higher risks at specific times during fetal development.

The other statements describe characteristics that do not relate to teratogenicity. For example, while some drugs may be deemed safe for certain trimesters or may effectively treat pregnancy-related conditions, this does not qualify them as teratogenic. Moreover, the concept of having no side effects is generally unrealistic for any pharmacological agent, as all medications can potentially have adverse effects, particularly in sensitive populations such as pregnant individuals.