Chronic Bad breath. In hyderabad!

I’ve had chronic bad breath for over 10 years. I notice a persistent white coating mainly on the back of my tongue, which returns quickly even after cleaning. The smell is strong, sometimes fecal or metallic, and does not improve with brushing, mouthwash, or mints. I’ve already been tested for Helicobacter pylori and other gut issues, and results were negative. I would like evaluation for posterior tongue biofilm and anaerobic bacteria, and guidance on proper treatment. • It’s worse in the morning • Water gives only temporary relief • Coating is mainly at the back of tongue • Halitosis (oral cause) • Tongue coating / bacterial biofilm • Gum disease (even mild) • Tonsil stones (hidden cause sometimes) • Dry mouth Tip (important) Ask specifically if they can: • Do a tongue scraping + bacterial assessment • Suggest antibacterial treatment (like chlorhexidine or zinc-based rinses) • Check if you need a tongue microbiome Any clinic available in Hyderabad