What to do if i may have bad breath?

Many things..: But you first need to determine the cause.. Is it dental, diet, gastrointestinal, sinus in nature ? You need to first have a dentist examine your teeth and gums for any cavities and periodontal disease. After those items are addressed, you can see a gastroenterologist in regards to acid reflux and your diet. Hope this info helps get your social life back on track...

Tonsillolioths: I would only add to the original reviewer that food particles caught in the crypts of the palatine tonsils is a common cause of a bad odor in the mouth.