This Swanson product is formulated with science and crafted with care. Our formula features Lactobacillus acidophilus in a non-gmo, acid-resistant supplement designed to withstand stomach acid, with each capsule delivering one billion viable organisms at time of manufacture to support microflora balance and healthy digestion. This shelf-stable probiotic requires no refrigeration and supports digestive system wellness and bowel health. The acid-resistant delivery technology helps ensure viability through the intestine, making it a convenient daily supplement for home, work, or travel. We carefully select and source ingredients and work only with trusted partners. Backed by over 150 years of combined experience, our team of pharmacists, scientists, nutritionists, and quality experts ensures every product is tested for guaranteed purity, potency, and reliability.