Lactobacillus acidophilus is a gram-positive bacterium with rounded ends, primarily found in the small intestine. It produces lactic acid, acetic acid, and other antimicrobial substances that help control harmful bacteria. This bacterium aids in balancing intestinal flora and suppresses the growth of undesirable microorganisms. By converting carbohydrates, like glycogen, into lactic acid, it helps maintain the intestinal pH. The material is provided as a neutral pH, off-white powder when dissolved in water.