I've seen cranberry supplements in shops and was wondering what they are taken for.

I had a glass of cranberry juice yesterday and am really sick today with rhinitis (constrant dripping nose and red eyes). I've had this before when taking cranberry and sometimes other fruit - which makes me think I have candida.

Does cranberry aggravate mercury or just candida?

Is there a way of testing for candida? I am trying to avoid fruit as much as possible because I usually get flare ups like this if I take some - but not always.