PANTOPRAZOLE SODIUM
According to the official FDA enforcement report:
Discoloration: Firm received five (5) complaints stating that, "Tablets discolored darker than normal and have lighter-colored spots."
Pantoprazole Sodium, Delayed-Release Tablets, USP, 40 mg, 1000-count bottle, Rx only, Manufactured for: Camber Pharmaceuticals, Inc., Piscataway, NJ 08854, By: Hetero, Hetero Labs Limited, Unit V, Polepally, Jadcherta, Mahabubager-509 301, India, NDC 31722-713-10
Nationwide in the USA.
Official Source Provenance
Verified regulatory citation from U.S. FDA OpenFDA