Things to Eat - Natural produce, high acidity and natural sugars (and all the fibre, vitamins etc. that come with it). For some reason anything with a high vitamin C content works well.
Ex:
Pineapple (long hailed as the cum-cure-all), Sweet Oranges, Pears, Tomatoes, Celery
Things to not eat:
Anything to smelly in aroma/processed.
Ex.
Garlic, Lots of onions, Asparagus, Beetroot, Alcohol (decreases production and dehydrates - kinda anal though), Tons of tough protein.
Basically drink lots of water, eat vegetables and fruit - the fiber will help your body to get the goodness. And dont go crazy on the fruit juice you buy from the store - it tends to have a lot of sugar/preservatives added, and other stuff that wont help ya.
good luck, im pullin for ya