Hello,
Bad breath, also called halitosis, is typically caused by
bacteria that grow in your mouth. Short-term bad breath may be associated with tonsillitis, gastroenteritis,acid reflux, diabetic ketoacidosis, or sinus infection. Chronic halitosis may be caused by poor oral hygiene, gingivitis (gum disease),oropharyngeal infections or a dental abscess.
These antibiotics are useful only if bad breath is caused due to infections.If the cause is other diseases then antibiotics are not useful.