Respiratory diseases continue to be a significant global health concern, driving demand for effective treatments that help relieve symptoms, improve lung function, and support patient recovery. Zhejiang Haizhou Pharmaceutical offers a diverse portfolio of respiratory-related pharmaceutical ingredients, including Potassium Guaiacol Sulfonate, Guaifenesin, Acetylcysteine, Ambroxol Hydrochloride, and Bromhexine Hydrochloride, which are widely used as expectorants and mucolytic agents to facilitate airway clearance. The portfolio also includes Pentoxyverine Citrate and Dextromethorphan Hydrobromide for cough suppression, Chlorphenamine Maleate for allergy-related respiratory symptoms, and Oseltamivir, an important antiviral used in the treatment of influenza infections. Leveraging more than 50 years of expertise in pharmaceuticals and fine chemicals, Haizhou Pharm combines advanced manufacturing capabilities, stringent quality management systems, and internationally recognized regulatory compliance to provide reliable APIs, intermediates, and custom manufacturing services that support the development of high-quality respiratory therapies for global healthcare markets.