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Because the phenothiazines have anticholinergic effects, they should not be used in combination with other drugs that may have similar effects.
Because the drugs in this group may cause hypotension, or low blood pressure, they should be used with extreme care in combination with blood pressure-lowering drugs.
The antipsychotic drugs have a large number of drug interactions. Consult specific references.
Samuel D. Uretsky, PharmD
Author Info: Samuel D. Uretsky PharmD, The Gale Group Inc., Gale, Detroit, Gale Encyclopedia of Medicine, 2002
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