Bio-Strath is known to work by having a favourable effect on the physiological functions of the human body. It has been demostrated specifically to strengthen resistance to colds, flu and illness, accelerate recovery following illness or debilitating disease and help regain and sustain good health. It is believed that Bio-Strath has an effect on our Lymphocytes or white blood cells which make up an important part of our immune system. Bio-Strath works most effectively when the immune system is at its weakest.