Well at Walgreens Sodium Chloride Ophthalmic Ointment USP, 5%, 3.5 g tubes, Distributed by: Walgreen Co. 200 Wilmot Rd., Deerfield, IL 60015. NDC 0363-9050-00.
Presence of Particulate Matter: Brown spots observed on the inside of the tube of product, identified as tin with trace copper, which are the base of the materials of construction for the tube.
Nationwide within United States and Puerto Rico
https://www.accessdata.fda.gov/scripts/ires/index.cfm?Product=D-0860-2020