###Human: My problem of bad breath persists even after teeth cleaning. What to do? ###Assistant: Hello. The white coating on your tongue is mostly due to bacteria and debris. And, it seems that you might have a dry mouth. All this must be causing bad breath. Clean or scrape your tongue regularly, maintain proper oral hygiene, drink a lot of water and even empty stomach will cause bad breath, so have food regularly on time. Do mouth rinse with lukewarm water and salt or lukewarm water and a bit of mouthwash diluted in the water. But, better to avoid continuous use of mouthwash as this itself can cause dry mouth sometimes, and discoloration of teeth. Get a consultation from a dentist regarding dry mouth, to rule it out. If you have dry mouth, a Sialogogue (to increase salivary flow) will be prescribed by the dentist. Do not worry. You will be fine. If possible, send me a picture of your tongue and teeth.