Our homeopathic cold remedy is made with a unique zinc gluconate formula. Zinc is a micronutrient that's essential to human health. In a well-formulated cold remedy, zinc gluconate facilitates the effective release of zinc ions which shorten the common cold. Scientific theory suggests that zinc reduces the duration of common cold symptoms by directly inhibiting rhinovirus binding and replication in the nasal mucosa. All cold-eeze cold remedy products release zinc ions in your mouth that inhibit the cold virus' ability to replicate, which shortens your cold.