Natrol® Probiotic Acidophilus BioBeads® Dietary Supplement - 30. Strengthens the body's natural defense†. Guaranteed 2 billion live cultures‡. Helps maintain a healthy digestive tract†. Helps ease occasional stomach discomfort†. 30 beads. Strengthens the body's natural immunity†. Superior, triple-shell protection. Natrol® probiotic acidophilus BioBeads® are uniquely protected by an advanced triple shell that ensures viability through all three biophases: Biophase 1: targeted-release technology helps guarantee BioBeads potency on the shelf, and protects viable microflora all the way to ingestion. Biophase 2: bead passes safely through the acidic stomach environment unharmed. Biophase 3: inner layer gently breaks down, releasing proprietary blend of probiotics that helps support digestive health and immunity.† No egg, fish, crustacean shellfish, tree nuts, wheat, peanuts, artificial flavors, or preservatives. ‡At time of manufacture. Guaranteed 2 billion live cultures‡. 1 800 2-NATROL (800 262-8765).