* Enhanced Series * Refrigeration Optional * Since 1947 * 100% Dairy, Lactose and Milk Free * (No Casein) * 500 Million Microorganisms Per Use * Dietary Supplement * Suitable for Vegetarians Solgar"s Advanced Acidophilus Vegetable Capsules are a source of L. acidophilus, a beneficial microorganism that naturally resides in the lower digestive tract. This product is formulated to protect these organisms from stomach acidity, helping to maintain a health intestinal flora.