Homeopathy is a unique system of medicine that aims to promote good health by stimulating the bodys own natural healing ability. It is a non-drug therapy based on the principle of 'like cures like.' Flu-guard is the homeopathic version of the flu vaccination containing vaccines from 2008 -2012 and is used to enhance the natural immune system response to the flu without the evasive needle prick. Just a couple of sprays in your mouth 3 x day for 3 days each month over the winter season will help support your immune system to fight off winter flu bugs. This product can be used in conjunction with the flu vaccination.