* 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 Plus Vegetable Capsules are a source of L. acidophilus and B. lactis, beneficial microorganisms that naturally reside in the lower digestive tract. This product is formulated to protect these organisms from stomach acidity, helping to maintain a healthy intestinal flora.