Quigley Manufacturing

Quigley Manufacturing is a pharmaceutical manufacturing company based in Lebanon, Pennsylvania, specializing in the production of over-the-counter (OTC) healthcare products. As a subsidiary of ProPhase Labs (formerly The Quigley Corporation), the company is best known for manufacturing the Cold-Eeze brand of zinc gluconate lozenges. The facility is a state-of-the-art plant capable of large-scale production of lozenges and other oral solid dosage forms under strict Good Manufacturing Practice (GMP) standards. In addition to supporting its parent company's internal brands, Quigley Manufacturing provides contract development and manufacturing organization (CDMO) services to external pharmaceutical and consumer health firms. Its operations focus on high-volume manufacturing, packaging, and quality control for cough, cold, and nutritional supplement products.