I have had candida for a long time and have been working to get rid of it so I can't have any fruit/sugar at all and I just finished my second Liver Flush (without the apples). From what I have heard the apples just help to "soften" the stones and help them to come out more easily. Epsom Salts are safe to consume (I was also scared to take them, I have only ever soaked in them and didn't know it was safe to swallow). It doesn't taste good, like chemicals, but I didn't feel sick/nauseous after drinking them. I also only used lemons instead of grapefruit. I'm sure I would probably have better results if I could use apples, but I can't right now, so I'm doing the best I can with what I have to work with and I am still getting results. I got hundreds of little tiny stones out last time. This time I got fewer stones, but the ones I got out, were bigger than before. The anti-candida program that I am following wants me to do 5 flushes total, so I have 3 more to go. It is a little weird, but safe.
Here is the version I tried.
Good luck! http://www.modernherbalist.com/liver.html