Calcium citrate tetrahydrate USP powder, 100 gm container, MasterPharm, 115-02 Liberty Ave, Richmond Hill, NY 11419, (866) 630-5600
Lack of Processing Controls (lack of assurance of conformity to specifications).
Nationwide in the U.S.
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-1418-2020