Is drinking yakult good for diarrhea?

Fermented milk. Yakult is a probiotic dairy product made by fermenting a mixture of skimmed milk with a special strain of the bacterium "Lactobacillus casei Shirota." The product has almost twice as much sugar per 100grams as Coca Cola or orange juice (18 grams versus 10grams). There are probably less caloric ways to get your dose of probiotics.