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
for 18 months on the shelf, and protects viable microflora all the way to
Biophase 2: Bead passes safely through the acidic stomach environment
Biophase 3: Inner layer gently breaks down, releasing proprietary blend
of probiotics that helps support digestive health and immunity.