Hi, I have gone through your query and can understand your concerns. It looks like dry mouth, white tongue and bad breath are all inter-related issues and dry mouth is the cause for other symptoms. Dry mouth or Xerostomia can occur due to causes like severe dehydration, side effects of medications if you take any, salivary gland dysfunction, nerve damage supplying salivary glands, oral infections like thrush, Sjogren s Syndrome etc. Dry mouth can cause reduced flushing of debris from the mouth leading to increased infection causing bad breath and whitish tongue is due to overgrowth of yeast causing Oral Thrush. You should consult an Oral Physician and get evaluated. - As of now for dry mouth chew sugar free chewing gums. - Drink plenty of water. - Avoid regular mouthwash and use specialized mouthwash that are formulated for dry mouth patients like Biotene. - You can also instil artificial saliva drops. - Suck tart candies as it also stimulates saliva flow. For whitish tongue you can gargle with Nystatin mouthwash and such Clotrimazole lozenges. Hope this information helps. Let me know if I can assist you further. Thanks and regards, Dr. Honey Nandwani Arora