Which of the following conditions is considered teratogenic in pregnancy?

Finasteride is recognized as a teratogenic agent in pregnancy, meaning it can lead to developmental abnormalities in a fetus when exposure occurs during pregnancy. It is primarily used to treat conditions such as androgenetic alopecia and benign prostatic hyperplasia, but it is contraindicated in women who are pregnant or may become pregnant, as it can interfere with the development of male genitalia in a male fetus.

Vitamin D, calcium supplements, and some antibiotics are typically not classified as teratogenic. While certain antibiotics can have specific implications during pregnancy, many are considered safe and are prescribed to treat infections that could pose risks to both the mother and the fetus. It's crucial for healthcare providers to evaluate the safety and potential risks of all medications during pregnancy, but finasteride's specific mechanism and potential effects on fetal development distinguish it as a teratogenic substance.