This document discusses antifungal antibiotics and how they work. It notes that there are few systemic antifungal options and lists common fungal infections they can treat, including ringworm and thrush. It describes the different types of antifungal medicines from topical to intravenous. Antifungals work by killing fungal cells or preventing growth by targeting differences in fungal and human cell membranes and enzymes. Examples of antifungal classes and medicines are provided, along with details on specific antifungals like griseofulvin and polyenes such as nystatin and amphotericin B.