 [ Symptoms ] 52 yr old man w rottenabcessed teeth ongoing paininfection alergic to cillian antiobo what drug kill the infection  this man is teeth have turned black some have fallen out some he has pulled out he has battled abscessinfectionbad breath for way too long more than 2 yrs he is allergic to all the cillian antibiotics such as amoxicillin penicillin i know that he has to kill the infection before anything else can be done what antibiotic would be good to consider for people who can not do the cillians that is strong enough to fight widespreadlong term abscess [ Disease ] there are plenty of other effective antibiotics like erythromycin or the cephalosporins some penicillin allergic people may have a cross over allergy to this class however he needs to be under the care of a good dentist now let the dentist determine the type of treatment and antibiotics if he has an abscess he needs more than just a prescription for a non penicillin based antibiotic dental infections like you are describing need immediate and definitive care