Surprisingly, chocolate is also a good delivery system, so chocolate products created specifically to deliver probiotics (instead of just throwing them in for marketing purposes) are a tasty and effective option, as long as they aren't loaded with too much sugar and fat. (Attune is a California company specializing in chocolate probiotic treats.) Fermented foods such as cheese, sauerkraut and kimchi are also a good source of probiotics.

CNN: Can supplements block benefits of probiotics?