Levomepromazine Hydrochloride Wockhardt Uk (Levomepromazine Hydrochloride)

Levomepromazine is a phenothiazine antipsychotic used across several clinical pathways.

• Schizophrenia: helps control psychotic symptoms such as delusions, hallucinations and thought disorder.
• Severe agitation: calms extreme restlessness and aggressive behavior in acute settings.
• Nausea and vomiting: reduces chemotherapy‑induced and postoperative emesis.
• Pain management: provides analgesic benefit as part of multimodal therapy for severe pain.

• Levomepromazine Hydrochloride acts primarily as an antagonist at dopamine D2 receptors, reducing dopaminergic neurotransmission linked to psychosis. It also blocks histamine H1, adrenergic α1, and muscarinic receptors, contributing to its antiemetic, sedative, and analgesic properties while influencing cardiovascular and anticholinergic pathways.

Levomepromazine may cause a range of adverse reactions that vary in frequency and severity.

Common Side Effects

• Sedation: drowsiness or excessive sleepiness.
• Orthostatic hypotension: dizziness upon standing.
• Anticholinergic effects: dry mouth, blurred vision, constipation.
• Weight gain: increased appetite leading to weight increase.
• Extrapyramidal symptoms: mild tremor or rigidity.
• Nausea: occasional upset stomach.

Serious or Rare Side Effects

• Neuroleptic malignant syndrome: life‑threatening fever and muscle rigidity.
• Severe hypotension: marked drop in blood pressure requiring medical attention.
• Cardiac arrhythmias: irregular heart rhythms.
• Agranulocytosis: dangerously low white blood cell count.
• Severe extrapyramidal reactions: acute dystonia or parkinsonism.
• Seizures: rare occurrence of convulsive episodes.

When prescribing Levomepromazine, clinicians should consider several safety measures.

• Dose adjustment in elderly: start low and monitor for excessive sedation or hypotension.
• Assess cardiovascular status: patients with pre‑existing heart disease may be prone to orthostatic drops.
• Monitor for extrapyramidal symptoms: report any involuntary movements promptly.
• Use caution in hepatic impairment: reduced metabolism may increase plasma levels.
• Avoid abrupt discontinuation: taper gradually to prevent withdrawal phenomena.
• Store at room temperature: keep in original container, protect from moisture and light.

Levomepromazine can interact with other medicines, altering its safety or effectiveness.

Major Interactions (Avoid)

• Monoamine oxidase inhibitors (MAOIs): risk of severe hypertension.
• Anticholinergic drugs: additive anticholinergic burden may worsen dry mouth, constipation, and blurred vision.
• Central nervous system depressants (e.g., benzodiazepines, opioids): enhanced sedation and respiratory depression.

Moderate Interactions (Monitor Closely)

• Antihypertensives: additive hypotensive effect may require dose adjustment.
• Lithium: increased risk of neurotoxicity.
• Other antipsychotics: heightened chance of extrapyramidal symptoms and cardiac effects.