Influenza is described as a specific acute viral respiratory disease characterised by fever, coryza, cough, headache, malaise, and inflamed respiratory membranes. Flu-Guard is a unique formulation designed to help prevent cold and flu by stimulating the body's defences against many of the common flu viruses. Flu-Guard contains homeopathic potencies of the most recent influenza virus variants and its formula is regularly updated to include the current viral strains. Flu-Guard is designed to be taken each month on a repeating dose during the time when the viruses are at their most active. It may be used by all members of the family.