Just a quick note to say hi! Ambra75 I have had hiatial hernia since my late 20s and have been on previcid for near 20 years as I am 45. I too have started to experience burning on the tip of my tounge as well as into my gums rather in my lips on the inside of my mouth. Very frustrating. Ive read that folic acid helps and have tried it myself with some relief but not complete. Tramadol for me seems to get rid of the burn but only temperarory. Believe me I can empathise with your frustration.