Lindens Pro Billion Daily Capsules each contain a huge 1 billion (1,000,000,000) viable colony-forming units of bacteria, neatly encapsulated in a vegetarian capsule for ease of use. Known as friendly bacteria, lactobacillus acidophilus is what is known as probiotic bacteria. These bacteria play an important role in healthy digestion, helping break down food as it passes through the gut, but can often be depleted, particularly after courses of antibiotics. Often found in probiotic yoghurts, live cultures of lactobacillus acidophilus can help you support your gut flora, the friendly bacteria that help you get the best out of your food. Take one capsule per day with a little water. This product does not require refrigeration.