“…Lofgren and Lundqvist synthesized xylocaine in 1943 and Torsten Gordh introduced it clinically in 1949 17 . Steffen and colleagues reported on the use of antihistamines as local anesthetic agents in 1956 and 1957 and reviewed the literature on the subject 18, 19 . Tr ipelennamine (Pyribenzamine), pyrilamine maleate (Neo‐Antergan), diphenhydramine (Benadryl) and chlorprophenpyridamine maleate (Chlor‐Trimeton) each proved to be satisfactory anesthetic agents.…”