Index > Factsheets > Promethazine


SummaryA first generation antihistamine, which also possesses anticholinergic, strong sedative and antipsychotic properties. Once commonly used as a treatment for psychosis, it is now more commonly seen as a component of codeine cough syrups as an anti-nausea agent.
DoseCommon: 25-75mg's.
NOTE: This is what is normally used in medicinal settings, and is usually what is prescribed to you, since it has anticholinergic properties; IE; Delirant.
Onset15-30 minutes.
Duration4-8 hours.
After-effects0-3 hours.