Do any of you have any allergies/sensitivities to things used during fillings or root canals? I'm sensitive to epinephrine & lidocaine puts me into a semi coma which is weird. I'm terrified of dentist. The first time I went to the dentist as a child I woke up drenched in perspiration after being given an injection to numb my tooth. That may have been my first seizure or allergic reaction, not sure which. Do you take a sedative or extra seizure meds before a dental appointment? Thanks.