Our intelligent shoppers have voted probiotics 15 by Nature Sciences as our #2 pick. This is a premium probiotic containing 15 Billion Live cultures. The reason this probiotic is so great is because it contains the top quality strains, without any of the lower quality stuff like most of the other companies. This product will help those suffering from bloating, constipation, gas or indigestion. A very strong product in that it contains the right amount of CFU, and very strong science to back it up. Though the reviews were stellar and ingredients are pure, the lack of medical endorsement led this product to come in a close second place on our top picks.