Sigma Healthcare Limited operates as a pharmaceutical wholesaler, distributor, and pharmacy franchisor in Australia and internationally. It offers intellectual property and support services to stores operating under the Chemist Warehouse, My Chemist, Amcal, and Discount Drug stores. The company owns retail pharmacies; and provide retail support services to network of pharmacy members, dose administration aid services, and the provision of third- and fourth-party logistics services to pharmaceutical manufacturers and other supplier partners. Further, the company offers products online. The company was founded in 1912 and is headquartered in Clayton, Australia.