1,3 1,6 beta glucan is more commonly referred to as Beta glucan.Beta glucan is on of the most intensely studied immune support products ever discovered. Research dating back to the 1940's has documented its immune support characteristics. Beta 1,3 1,6 glucan is classified as an immunomodulator. Immunomodulator's have the ability to regulate the immune system. To learn more on how to compare beta 1,3 1,6 glucan products and identify them visit here.