Is it possible to have an allergic reaction to the anesthesia used by my dentist? Coincidentally I have been having chronic diarreah since i started going to the dentist. Doctors cannot find what's wrong with me, liver is fine, no parasites o signs of food poisoning. No fever, either. For a week I was getting better but I returned to the dentist for some work 3 days ago and yesterday the diarreah came back. How long is the drug going to stay in my body and if there is nothing else wrong with me' what is causing it? It is a mistery illness. What can I do to detox? Thanks.