PENICILLIN G POTASSIUM
According to the official FDA enforcement report:
Labeling: Label Mix-Up; Some vials of Cefazolin for Injection, USP 1 gram were incorrectly labeled as penicillin G potassium for Injection, USP, 20 million Unit
Buffered Penicillin G Potassium for Injection, USP 20,000,000 Units (20 million units), For IV use, Sterile, Rx Only, Manufactured in Austria by Sandoz GmbH for Sandoz Inc. Princeton, NJ 08540, NDC: 0781-6136-94.
Nationwide in the USA
Official Source Provenance
Verified regulatory citation from U.S. FDA OpenFDA