5 and 2, a staple of emergency medicine.
5 mg of Haldol
2 mg of Ativan
IV
to calm an agitated patient.
In those with Parkinsons disease, this combination, particularly the Haldol part, should be used with extreme caution as it can exacerbate extraparamidal signs. Parkinsons results from a greatly diminished number of inhibitory dopaminergic neurons. Haldol treats psychosis by decreasing dopamine. Hence, Haldol + Parkinsons makes for a bad combination.
Source
Harvey, R. and Champe, P. Pharmacology. 2nd ed
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