Echinocandins are a class of antifungal medications primarily used to treat infections caused by fungi, particularly Candida and Aspergillus species. They work by inhibiting the synthesis of beta-(1,3)-D-glucan, an essential component of the fungal cell wall, leading to cell lysis and death. These drugs are often administered intravenously and are considered effective for patients with compromised immune systems or those who are resistant to other antifungal treatments. Common examples of echinocandins include caspofungin, micafungin, and anidulafungin.