GSE Immunobiotic is a dietary supplement based on Grapefruit Seed Extract, Biosterine® (a phytocomplex composed of Holy Basil and Salvia officinale, titrated to contain 40% rosmarinic acid), Uncaria tomentosa, and Boswelia serrata. The components of Grapefruit Seed Extract may contribute to the body's microbial balance. Extracts of Holy Basil, Salvia, and Uncaria support the immune system. Directions for use: It is recommended to take 1 or 2 tablets a day, preferably after main meals, to be swallowed with water or other liquid.