In the Phillipines they use a probiotic wash that contains Lactobacillus (like in yogurt) in order to maintain healthy balance of organisms and prevent yeast infections and UTIs. I wasn't able to find it on a quick google search and don't have time to look much further but I've seen the bottle, it's while and hourglass-shaped with pink text, very unassuming-looking.
EDIT: I think this might be it:
http://www.lactacyd.co.uk/c.htm