KIRKLAND Signature, ULTRA STRENGTH ANTACID, Calcium Carbonate, 1000 mg, 265-count bottle, MANUFACTURED BY: GUARDIAN DRUG COMPANY, INC., 2 CHARLES COURT/DAYTON, NJ 08810, FOR: Costco Wholesale Corporation, 999 Lake Drive, Issaquah, WA 98027, NDC 63981-171-80
Presence of foreign substance: small metallic particles in chewable tablets.
U.S.A. Nationwide
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-0557-2026