Zileuton Extended-Release Tablets, 600 mg, 120-count bottles, Rx only, Distributed by: Prasco Laboratories, Mason, OH 45040 USA; NDC 66993-485-32.
Failed Dissolution Specifications: Out of specification result for dissolution.
Nationwide in the USA.
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-1342-2019