Erica White writes in her Beat Candida Cookbook:
…When die-off occurs simply as a result of starting the diet and taking the vitamins, you need to do something to alleviate the symptoms. Make sure you drink plenty of water, and you can also take vitamin C to what is known as ‘bowel tolerance levels’ – in other words, until it causes you to have a loose bowel motion. When the body is full of toxins (and also when it is fighting an infection or an allergy), its tissues will soak up vitamin C like a sponge, so you can sometimes take very large amounts before it causes a loose stool. The next day you will usually find that it takes a little less, and so on.
Remember, ‘bowel tolerance level’ will be different for everyone. Some may reach it at 2 grams of vitamin C, others will need considerably more than this. Remember too that your own tolerance level will differ depending on your current health status.