Nystatin is a medication that is used to treat various fungal infections, including thrush, diaper rash, and ringworm. It belongs to the group of drugs called antifungal agents. Although nystatin is a well-known medication, there are other synonyms used by healthcare professionals to refer to this drug. Some of these synonyms include Mycostatin, Nilstat, Fungicidin, and Nystex. These drugs contain the same active ingredient as nystatin and are used to treat the same types of fungal infections. However, they may differ in terms of strength, dosage, and formulation. It is important to talk to a healthcare professional before using any medication to ensure that it is appropriate for your specific condition.