i treat myself with rose canina (dog rose) tea and honey.

Also ginger tea.

There is wide use of Tribulus terrestris tea where i live. I do gargle with a brew if it, but be careful not to swallow it because its toxic. Just gargle with it and spit it. It's very good for local treatment of ulcers and aphtae. Also the infusion brew goes bad quite quickly, so it has to be disposed and new brew to be prepared.