Largactil

Chlorpromazine Hydrochloride, the active ingredient in Largactil, is a phenothiazine presented as an injectable solution for intramuscular and intravenous use. It is employed to manage schizophrenia, acute psychotic episodes, severe agitation, and manic episodes in adult patients. GNH USA supplies Largactil as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Chlorpromazine acts on central dopamine pathways and is indicated for several severe psychiatric conditions.

Schizophrenia: reduces psychotic symptoms and stabilises mood. Acute psychotic episodes: rapidly controls hallucinations and delusions. Severe agitation: calms extreme restlessness and aggression. Manic episodes: diminishes elevated mood and hyperactivity.

Chlorpromazine may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects: - Sedation or drowsiness. - Orthostatic hypotension. - Dry mouth and blurred vision due to anticholinergic activity. - Constipation.

Serious or Rare Side Effects: - Neuroleptic malignant syndrome. - Tardive dyskinesia or other movement disorders. - Severe cardiac arrhythmias or QT prolongation. - Agranulocytosis or other blood dyscrasias.

Before initiating therapy, clinicians should consider several safety measures. - Blood pressure monitoring: watch for orthostatic drops. - Cardiac assessment: evaluate for pre‑existing heart disease. - Movement disorder surveillance: monitor for early signs of tardive dyskinesia. - Hepatic and renal function: adjust use in impairment. - Discontinuation: taper gradually to avoid withdrawal effects. - Store at below 25°C: keep in original container, protect from light and moisture.

Chlorpromazine can interact with other medicines, requiring careful management.

Major Interactions (Avoid): - CNS depressants (e.g., barbiturates): may enhance sedation and respiratory depression. - Drugs that prolong QT interval (e.g., haloperidol): increase risk of cardiac arrhythmias. - MAO inhibitors: can cause hypertensive crises.

Moderate Interactions (Monitor Closely): - Antihypertensive agents: additive blood‑pressure lowering effect. - Antidiabetic drugs: may mask hypoglycaemia symptoms. - Other antipsychotics: risk of cumulative side‑effects such as extrapyramidal symptoms.