Itrazen SB 65 mg Capsule is an antifungal medication containing Itraconazole, a triazole derivative known for its broad-spectrum activity against various fungal pathogens. It works by inhibiting the synthesis of ergosterol, a vital component of fungal cell membranes, thereby disrupting cell membrane integrity and leading to fungal cell death. This mechanism makes Itrazen SB effective in treating both superficial and systemic fungal infections.