Yes, I felt it while herxing badly.Once, even my daughter felt it.
For me it is a herx symptom as I treat constantly until I am in remission and then relapse(happened twice already).
I always have to have some antibacterial candy because I had extreme herpangina associated with strep throat and staphylococcus in my nose(for which I am now treated concomitantly with lyme and bart treatment), I do not recommend it though.You probably have some nice ginger or other candy in the health food store, wich are sugar free.Of course, detox and eat the GF SF DF diet too, because for me every cheat ends with bitter tears!
Question: are you treating now?
P.S.Flagyl and Tinidazol cause metallic taste in mouth!