<prompt> Is 70 year old man was administered penicillin intravenous within five minutes, he developed generalized uicaria, swelling of lips, hypotension and bronchospasm. the first choice is to administerChlorpheneramine injEpinephrine injHigh dose hydrocoisone tabletNebulized salbutamol  <response>: Epinephrine adrenaline is a drug of choice for anaphylactic shock. it is given by subcutaneous or intramuscular route in a concentration of 1:1000. intravenous route is rarely used but at match but that much lower concentration1:10,000 Refer kDT 6e p128 