Hi sir.....     Bad breathe is due to soft and hard deposits(plaque and calculus) ,decayed tooth,gum infection (gingivitis)or infection of supporting tissues of your teeth( periodontitis), sometimes Gastric problem like GERD also cause bad breathe in your mouth.....Eventhough you brush there is always some inaccessible areas in your teeth that need to be cleaned(scaling and polishing) by proffesional dentist in a dental clinic.. eventhough you use  strong mouth wash, it wont give better results if you have these above mentioned problems in your mouth ..

U just need to go for scaling and polishing

Hi...Get your teeth cleaned and start using mouthwash.

Bad breath may be due Gerd, but it not causes serious bad breath, so you should go for scaling. There is no medicine required.