Hi, there are many causes of Halotosis or bad breath. First of all is plaque accumulation. Please visit a dentist
for complete oral examination. You may require scaling. If your oral hygiene
is good, there may be other reasons for the condition. They are tonsillitis
, lung disorders, Improper digestion, gastritis etc. All these causes need to be ruled out. Hydrogen peroxide
in diluted state is good as a mouth wash. Other options are Chlohex mouthwash an Plax mouthwash. Take care!