Not to disregard what the other person said, but the only problem with "yakult" is that it is full of sugar, and bacteria loves sugar. Yakult defeats the purpose of getting rid of the bacteria by all the sugar it has in it. Your best bet is to eat plain yogurt (boring yes, but that is better than all the sugar).
According to Dr. Andrew Weil, he says to eliminate sugar from your diet and add some raw garlic, a potent antifungal and antibacterial agent. As an alternative to antibiotics, he also recommends using tea tree oil suppositories or douche with tea tree oil. Make a 10 percent solution (about one and a half tablespoons of tea tree oil to a cup of warm water). Discontinue if you find that this treatment causes irritation.
Regarding probiotics, the best products on the market contain a new strain, Lactobacillus GG, that has been shown to get into the intestinal tract when you swallow it. The brand, Culturelle, has this particular strain. You can find it at CVS, Walgreens, etc. I am not a doctor, but I have been studying health my whole life. I hope this helps!!!