DESC: Garden of Life's Primal Defense is a probiotic blend containing Homeostatic Soil Organisms( HSO ) (live enzymes, vitamins and minerals) designed to optimize the digestive terrain, bowel and immune system function. Primal Defense is the PRIMARY building block of the Garden of Life Products and should be taken by everyone interested in this program. Please choose from the sizes below:180 caplets (Large size) Retail Price $77.95 on sale for $54.5790 caplets (Small size) Retail Price $44.95 on sale for $31.4745 caplets (Trial Size) Retail Price $24.95 on sale for $17.4781 gm powder (Small size) Retail Price $44.95 on sale for $31.47