@claremac: Burning Mouth Syndrome may have many causes to experience flares. I am a NET cancer patient and while researching a possible treatment, a fellow NET patient recommended L-Lysine 1000mg taken orally. It is an amino acid and she reported that it prevented the burning mouth syndrome. She took L-Lysine with each dose of the chemo treatment.
If you check with your doc they may recommend the correct dosage for your circumstances. Hope this helps!
PS: If you have tried L-Lysine, I would love to learn the dosage & what reaction to the symptoms you experienced. Best to you…. Bette