Your patient with schizophrenia is experiencing severe agita…

Your patient with schizophrenia is experiencing severe agitation and aggression and the doctor has ordered Haldol, Ativan and Benadryl IM. The Benadryl is available in a multi-dose 10 ml vial. It is marked as 50 mg/ml. The MD has ordered Benadryl 75 mg IM. How many ml do you give?