What can help with a sore tongue?

I take the amino acid Lysine for them in high doses. L-Lysine is an essential vitamin-amino acid that along with other aminos (L-Carnitine, L-Taurine) people with autoimmune disorders and thyroid typically have. Powdered alum (used for pickling) put on the white sores on the tongue can help take away the pain; sometimes a potassium tablet will, but I'm still searching for why, other than I know I am run down usually when I get them and usually have a fluctuation in my hormones, too. I to get recurrent staph and fungal infections, so don't rule that out either. Alum or powdered akaline (like alka seltzer crushed up) helps with pain, not a cure.. Picking them off or squeezing them helps them disappear faster I think.