Propranolol, a beta-blocker ... Again as previously noted, IM, IV, or oral chlorpromazine can be helpful with severe hyperthermia by rapidly reducing the core temperature (Strum, 2002).

Propranolol HCl 1mg/mL; soln for IV inj. Usual dose: 1–3mg IV at a rate of 1mg/min. If necessary, a second dose may be given after 2 minutes. Thereafter, additional drug should not be given in ...