Nystatin oral suspension is most appropriately prescribed for:

Nystatin is a topical polyene antifungal that binds ergosterol in the fungal cell membrane; it is used for oropharyngeal candidiasis, is not absorbed systemically, and acts locally in the mouth.Other options: Bacterial abscesses need antibiotics/drainage; herpes labialis needs an antiviral (acyclovir); aphthous ulcers are managed with topical corticosteroids.Key exam takeaway: Nystatin = topical antifungal for candidiasis; think ergosterol-targeting polyene.