Identify a common antifungal medication that is considered safe in pregnancy.

Clotrimazole is a common antifungal medication often deemed safe for use during pregnancy. This safety profile makes it a preferred choice when treating fungal infections in pregnant individuals. It belongs to the imidazole class of antifungals and primarily works by inhibiting fungal cell membrane synthesis, effectively stopping the growth of fungi.

The reason for clotrimazole's safety in pregnancy is supported by its low systemic absorption when applied topically, thus minimizing potential exposure to the developing fetus. It has been widely studied and used in pregnant populations without significant evidence of teratogenic effects.

In contrast, medications like fluconazole and ketoconazole carry potential risks. Fluconazole, even in low doses, has been associated with congenital malformations when used in pregnancy. Ketoconazole is not usually recommended during pregnancy due to concerns over its safety profile.

Terbinafine also raises caution as its safety during pregnancy is not well-established, and it may have adverse effects on fetal development.

Therefore, clotrimazole stands out as a safe and effective antifungal option for pregnant individuals, allowing healthcare professionals to treat infections while minimizing risks to both the mother and the fetus.