30 vegetarian lozenges Item Catalog Number: 01961 Zinc stimulates the activity of about 300 enzymes1 and fortifies the immune system.2 Taking the best zinc lozenge is important for maintaining the body's natural defense system during the cold season—and throughout the year. Enhanced Zinc Lozenges provides a special "ionic formula" that delivers on the original promise of seasonal immune support. Immune Support for Seasonal Changes