<s>[INST] hi i have been taking these tabs recofast & deoxyl 500, 2 a day for 5 days. I took these for the dust allergies. th course is over but i still hav th running nose & sneezing. while i was taking it, I found my tongue turning yellow in few areas.. Im scared.. what could be the cause of it.. plz let me know.. Thanks. [/INST] helo thanks for consulting at hcm..it could be becz of the medicines u took, so clean ur tongue with a soft brush and not vigorously,, also do salt water saline gargle thrice daily,,also can use betadine gargle, if prblm persists visit ur local dentist,,hope it helps,,tc </s>