Megadophilus® is step one in Natren's three-step custom probiotic system. This Lactobacillus acidophilus probiotic product provides support to the small intestine. Lactobacillus acidophilus prefer to reside along the walls of the small intestine, where most of the digestive process takes place. Acidophilus is also a resident beneficial bacteria in the oral cavity, vaginal tract, and part of the urinary system. Available in dairy, or vegetarian/vegan appropriate dairy free probiotic formulas, each serving of Megadophilus® provides a minimum of 2 billion colony forming units (cfu) of: Lactobacillus acidophilus, DDS-1 super strain in the dairy cultures OR Lactobacillus acidophilus, NAS super strain in the dairy free vegetarian/vegan cultures. Natren's Megadophilus® was the first genuine probiotic, ushering in the entire category of dietary probiotic supplements and introducing the term "probiotic" to North America. Natren was the first company to introduce a single strain concentrated Lactobacillus acidophilus powder requiring continuous refrigeration. Prior to the introduction of Megadophilus®in 1983, Lactobacillus was a catch all phrase for low potency, questionable and often outright inferior products including yogurt tablets, sweet acidophilus milk, and liquid acidophilus. Natren founder and probiotic pioneer Natasha Trenev identified, isolated and concentrated an effective single strain of acidophilus, and developed a system to keep the live bacteria's potency viable by packaging it in a glass bottle with a tin lid, and demanding refrigerated handling throughout distribution. Natren Megadophilus®is also revolutionary in that the live bacteria are kept in their original culturing medium, or supernatant. Natren's Megadophilus® probiotic supplement is recommended for adults and children over two years of age. Megadophilus® can support: Optimized digestion* , General wellness* Digestion of dairy products by assisting with lactose metabolism* , Small intestine health*, 100% potency guaranteed through the printed expiration date when stored under the conditions stated on the label. NATREN MEGADOPHILUS PRODUCT AVAILABILITY : DAIRY - Loose Probiotic Powder , A note about dairy based probiotics: Dairy milk is one of the original foods that these bacteria thrive on, which is why they are called Lacto bacilli, meaning milk bacteria. [Ayurveda, a Hindu system of traditional medicine used in India for over 5000 years, is devoted to using dairy products, as milk is considered the pure love of the cow for her calf. Ayurvedic doctors and pharmacists highly recommend dairy products to their patients. Natren is one of the few custom probiotic manufacturers to still use dairy as a growth medium for beneficial bacteria.