Queisser Pharma is a German pharmaceutical company headquartered in Flensburg, specializing in the development, production, and marketing of a wide range of health and wellness products. These include dietary supplements, over-the-counter medicines, medical devices, and cosmetics, sold under prominent brands like Doppelherz, Protefix, Stozzon, Ramend, Litozin, and Tiger Balm. The company distributes its products globally, with a significant international presence.