Probably many! Better to take capsules with high count bacteria (10 billion of more), and ones with more strains of good bacteria (B10- or more). More convenient and better than drinks. Save your money!
Pro mean with. and bio means life. Probiotics help the GI system digest food. Anti means against. So, if one takes excessive antibiotics (which are sometimes needed) they can kill off the good bacteria in our GI systems and we can have digestive problems. This can happen w/out antibiotics at times too. So, the probiotics replace the good bacteria that are missing or low. Look for a variety of strains.