<prompt> A 70-year-old man was administered penicillin intravenously. Within 5 minutes, he developed generalized uicaria, swelling of lips, hypotension and bronchospasm. The first choice of treatment is to administer -Chlorpheniramine injectionEpinephrine injectionHigh dose hydrocoisone tabletNebulized salbutamol  <response>: Ans. is b i.e., Epinephrine injection Generalized uicaria, swelling of lips, hypotension and bronchospasm within 5 minutes of taking penicillin suggest the diagnosis of anaphylactic type of hypersensitivity. Epienephrine S.C.i.m. is DOC for anaphylactic shock. 