Terconazole is an antifungal medication primarily used to treat vaginal yeast infections caused by Candida species. It works by inhibiting the synthesis of ergosterol, a key component of fungal cell membranes, leading to cell death. The drug is commonly administered as a vaginal suppository or cream, providing localized treatment with high efficacy. It is effective against both susceptible and some resistant strains of yeast, making it a valuable option in managing recurrent or persistent infections. Due to its targeted delivery, systemic absorption is minimal, reducing the risk of widespread side effects. Terconazole is typically prescribed for short-term use, with treatment durations ranging from three to seven days depending on the formulation.