I suffered with burning mouth, tongue, and two for over 3 years and tried many things. Finally was diagnosed with gastritis with hyperplasia, reflux ( acid and bike) and Barrett’s esophagus. Treatment with high dose ppi ( tried Prilosec now take Nexium 40 mg twice daily, sucralfate 20 ml 3 times day before meals and at bedtime, and baclofen 5 mg 3 times a day plus 4th one at bedtime. Took 30 days of treatment for me to see slight improvement. After 60 days able to stop pregabalin and pain pills. I am burning pain free many hours. When pain comes thru during day I take a chewable pepsid complete. It takes patience but I am back to feeling more like myself!