Hi , am using bactron on my lip and it went into my mouth , and now i have toothache only the teeth on the side where i apply the medicine. ?

Somewhat concerning: I am unaware of any reports of bactroban (mupirocin) causing an issue with dentition. The only issue might be a reaction to the medication, which would prompt stoppage of the medication. If taking the medication for an infection then it may be a sign of spread of the infection, so i would seek medical advice with a visit to your primary care physician.

Visit ur dentist: Not familiar with bactron. Go to your dentist for a clinical evaluation, you may need a root canal.

Bactroban (mupirocin) toothache: That seems unusual to me. I would suggest going to the dentist and getting things checked out.