Hi.. Welcome to HEALTHCARE MAGIC.. I have gone through your query and can understand your concerns.. As per your complain bad breath can occur due to a number of causes and acid reflux and gastric problem is a common cause. It can also be due to Oral and dental infection, Sinusitis, excess intake of high aroma foods like onion and garlic, poor Oral hygiene, tonsil stones etc.. In case if the bad breath is due to Acid reflux Probiotics can however help.. You can take plenty of Yoghurt and Lactobacillus Acodophillus supplements containing capsule for improvement.. You should also maintain a good Oral hygiene.. Gargle with flavored antiseptic mouthwash and chew flavored sugar free chewing gum.. Limit intake of onion and garlic especially in raw form.. Drink plenty of water.. Clean your tongue also daily using a tongue scraper.. Brush your teeth twice a day.. In case if there is still no improvement consult an Oral Physician and get evaluated and a proper clinical examination and treatment of underlying cause relive the symptoms.. Hope this information helps.. Thanks and regards. Dr.Honey Nandwani Arora.