<s>[INST] dear sir i had habbit of chewing tobbaco for last 12 yrs but from last 6 weeks i have quited and am sucessful in same. but now a days i ahve noticed some red patch on right side inside cheek which goes after using antiseptic mouthwash (hexidine) i am in pharma sector so has started some anibiotic cipro and also using til tale for mouth opening first itwas hardly 1 1/2 finger but now it is more than 2 finngers [/INST] Dear friend thanks for sharing your concern since you are in pharma sector you must be aware of a condition like oral sub mucous fibrosis where there is restricted mouth opening along with oral lesions.  Anti bionics like Cipro doesn't help in this.  I would suggest you to quit tobacco chewing completely because it can further aggravate your problem. Also it is nice to know that you have started taking care.  Meanwhile maintain good oral hygiene avoid spicy foodstuff.  Keep a close watch on the lesion and see for any progression in that, then you must report to dentist else it should recover on discontinuation of habit.  Keep a chewing gum in your mouth and keep chewing it. That promotes salivation. Thanks </s>