The average Nystatin cash price is about $22.45 for a supply of: Ointment 100000 UNIT/GM 30 Tube. Get our free Nystatin coupon and be eligible to receive a discount. You can reduce your Nystatin cost by up to 75% with our free Nystatin discount card. Bring it to a participating pharmacy near you to save on your prescription medication.Nystatin is an antifungal drug that is used to prevent the growth of fungi. Nystatinhas a very mild effect onthe body and is suitable for treating candidiasis outbreaks. This is because unlike other prescription medicines, Nystatin will not destroy the good bacteria that in found in the gut.