What is the pregnancy category for Nifedipine?

Nifedipine is classified under pregnancy category C. This categorization indicates that studies in animals have shown an adverse effect on the fetus, but there are no adequate and well-controlled studies in humans, or that there are no studies conducted in either humans or animals. As a result, the use of nifedipine during pregnancy is permitted only if the potential benefits justify the potential risk to the fetus. This classification helps healthcare providers assess the risk versus benefit of prescribing nifedipine to pregnant patients.

The pregnancy categories A and B denote safer profiles for use during pregnancy, which does not apply to nifedipine. Option D, implying 'none' as a classification, doesn't reflect the established category classification for this drug and therefore would not be correct. Thus, the accurate category reflects the careful considerations necessary for prescribing this medication to pregnant individuals.