Antihistamines are medications that target the H histamine receptor.
The use of antipsychotics can be extremely helpful in reducing psychotic symptoms and agitation in patients with severe mental illness.
As well as its needed effects, promethazine may cause unwanted side effects that require medical attention.
Stop taking promethazine and get emergency help immediately if any of the following effects occur: Rare - Symptoms of neuroleptic malignant syndrome; two or more occur together; most of these effects do not require emergency medical attention if they occur alone Some promethazine side effects may not need any medical attention.
Phenergan (promethazine)." Wyeth-Ayerst Laboratories, Philadelphia, PA.
Promethazine Hydrochloride (promethazine)." ESI Lederle Generics, Philadelphia, PA.