 [ Symptoms ] could mouthwash cause high blood pressure [ Disease ] get a full mouth scaling done from a dentist start using antibacterial mouthwash example listerine twice daily for two weeks this is the best for stinking mouth bad breath halitosis another method for cure of bad breath is saline mouth rinse take a small cup of lukewarm water and add 14th teaspoon of salt in it and rinse thrice daily for 10 days you must get the cause identified treating the root cause will give a permanent solution for bad breath if the halitosis remains evenafter the use of mouthwash for two weeks consult a dentist online for further treatment