Nystatin Oral Suspension, USP 500,000 units/ 5 mL (NDC 66689-037-01 ) Rx Only, Manufactured by VistaPharm, Inc. Largo, FL 33771
Failed Impurites/Degradation Specifications: Test failure of single largest peak at 18 months.
Nationwide.
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-913-2013