Beta glucan (yeast beta) and yeast extract are considered as best natural immune booster available in the market. Beta-Glucan is one of the natural immune booster product better known as a fantastically complex immune system intended to secure them against all interruptions into the body that may bring about damage. Environmental toxins, aging, stress among others are the factors resulting in weakening the immune system of human body. Beta-glucans (?-Glucans) contain a group of ?-D-glucose polysaccharides normally happening in the cell walls of yeast, cereal, bacteria, and parasites, with altogether contrasting physicochemical properties reliant on source. Beta-glucan is a polysaccharide that is found in normal source, for example, grain oats, yeast and mushroom. The physicochemical properties of beta-glucan differ contingent upon attributes of essential structure, including degree of branching, molecular weight and linkage type.