Mexico seizes suspicious Keytruda in raid to dismantle counterfeit medication ring

Mexican federal authorities seized vials labeled as Keytruda during a raid to dismantle a counterfeit medication ring, with five vials found in a March operation alongside other illicit drugs and items. Merck, the drug's manufacturer, cannot confirm the vials' authenticity, and the high cost of Keytruda has driven counterfeit production, leading to patient harm.