Hisun Pharmaceuticals

Hisun Pharmaceuticals, officially known as Zhejiang Hisun Pharmaceutical Co., Ltd., is a major global player in the pharmaceutical industry. Founded in 1956 in Taizhou, Zhejiang Province, China, the company has grown from a local chemical factory into one of the world's leading manufacturers of Active Pharmaceutical Ingredients (APIs) and finished dosage forms. It specializes in therapeutic areas such as anti-infectives, oncology, cardiovascular, and animal health.

While the bulk of its manufacturing capacity remains in China—where it operates extensive facilities for fermentation, chemical synthesis, and biological drugs—Hisun has expanded its international footprint. In the United States, Hisun Pharmaceuticals USA serves as a strategic hub for commercialization and development. The brand is recognized for its vertical integration, controlling the production process from raw ingredients to final tablets and capsules, ensuring compliance with global standards like the FDA and EMA.