Propolis is produced by bees and used to seal and disinfect the interior of the cell. It is known since ancient times for its beneficial anti-inflammatory and anti-viral properties.
Echinacea is a traditional pharmaceutical herb, whose activity is directly related to the treatment of the common cold. Moreover, it has remarkable antibiotic, antibacterial and anti-inflammatory action. Vitamin C is valuable in strengthening immune system during periods of cold, while having antioxidant and stimulating action.
Zinc is essential to the development of leukocytes, which protect against viruses and bacteria, thus helping to fight infections.