Hey, I have had a white tongue too, for ages, and its almost definitely due to my candida infection. other sympotms include irritability and tiredness, bloating, constipation and other digestive problems, vaginal thrush, urinary tract infections etc. basically this is caused by too much yeast and Sugar in the body, and can be caused by Antibiotics , taking the contraceptive pill, or just eating too much sugar. i'm currently on a diet to get rid of it, where i'm not eating any Sugar or yeast at all for three months. its also important to take probiotics such as acidopphilous capsules and eat lots of sugar-free yoghurt. ask you doctor and/or homeopath for advice, especially if you have any of the other symptoms.