Persistent bad breath that improves temporarily with eating and water but keeps recurring is commonly due to dry mouth, post-nasal drip, coated tongue, sinus issues, or gastric causes like silent gastritis or H. pylori infection. Lack of heartburn does not rule out silent reflux.
Next Steps
Get a dental check-up to rule out hidden gum or tooth issues, and consult a physician for evaluation of H. pylori (breath or stool test), sinus problems, and basic blood tests if needed. Adequate hydration and assessment for reflux may be advised.
Health Tips
Drink water frequently, avoid long fasting, maintain regular meals, and continue tongue cleaning gently. Avoid smoking, excess spicy foods, and self-starting antacids or antibiotics without medical advice.