Shelf-Stable, Complete Probiotic for Healthy Digestion and MORE! Shelf-stable Complete Probiotic from webber naturals contains 3 Lactobacilli strains for small intestine care, and 2 Bifidobacteria strains for colon care. It’s specially designed to support immunity and healthy digestion by building healthy gut microflora throughout the digestive tract. Guaranteed to contain 5 BILLION ACTIVE CELLS – up to the time of expiry. No refrigeration is required, making this a great probiotic to take traveling, to work or for anyone with an active lifestyle.