Opsonin Pharma Ltd. is one of Bangladesh’s established pharmaceutical companies, beginning its journey on March 3, 1956, as Opsonin Chemical Industries. In 1962, it started manufacturing injectable medicines, followed by nationwide distribution expansion in 1980. The company began exporting medicines to Southeast Asia and the Middle East in 1985. In 2005, it adopted its current name, Opsonin Pharma Ltd., marking another milestone in its growth.