Mercaptopurine Tablets, USP 50mg, a) 60-count bottle (NDC 49884-922-02), b) 250-count bottle (NDC 49884-922-04), RX only, Manufactured by Stason Pharmaceuticals, Inc., 11 Morgan, Irvine, CA 92618 for Prometheus Laboratories, Inc., 9410 Carroll Park Drive, San Diego, CA 92121
Failed Dissolution Specifications: Product found to be out of specification (OOS) during stability testing.
Nationwide
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-0249-2015