Healthy Intestinal Flora No Refrigeration Necessary - Gluten Free Promotes Positive Probiotic Balance Supports Immune System Non-GMO A Dietary Supplement Vegetarian-Vegan Probiotics-Enzymes-Digestive Family Owned Since 1968 GMP Quality Assured NOW Stabilized Acidophilus is a real-time lab-tested Acidophilus. Because some strains of Acidophilus are more stable than other, scientists have developed a proprietary method that optimizes growth medium during fermentation. This method uses specific fermentation and drying techniques to ensure that each batch of Stabilized Acidophilus has the hardiest strains of this important probiotic. In addition, substantial overage are incorporated to guarantee full potency at room temperature for the entire life of the product. Finally, Stabilized Acidophilus is packaged in glass for maximum protection from moisture.