Lergigan

Promethazine Hydrochloride, the active ingredient in Lergigan, is a first‑generation H1 antihistamine presented as an oral dosage form for oral use. It is employed to relieve allergic symptoms, prevent motion‑induced nausea, and provide sedation before surgical procedures in both adult and pediatric populations where appropriate.

GNH USA supplies Lergigan as a licensed, GDP‑compliant international pharmaceutical supplier, delivering the product through regulated distribution channels to hospitals, pharmacies, and clinics worldwide, ensuring quality assurance and adherence to global regulatory standards and are widely used.

Promethazine Hydrochloride acts on histamine H1 receptors and is used for several allergic and nausea‑related conditions.

Allergic rhinitis: relief of nasal congestion, itching, sneezing, and watery eyes. Urticaria: reduction of hives and associated itching. Motion sickness: prevention and treatment of nausea, vomiting, and dizziness caused by travel. Pre‑operative sedation: calming anxiety and providing sedation before surgical procedures.

Promethazine Hydrochloride may cause a range of adverse reactions, varying from mild to serious.

Common Side Effects: - Drowsiness - Dry mouth - Blurred vision - Constipation - Dizziness

Serious or Rare Side Effects: - Severe allergic reactions (anaphylaxis) - Blood dyscrasias such as agranulocytosis - Seizures - Cardiac arrhythmias

When prescribing Promethazine Hydrochloride, several precautions should be observed to ensure patient safety.

Pregnancy: Use only if potential benefit justifies the potential risk to the fetus. Elderly: Increased sensitivity to sedation and anticholinergic effects; dose may require adjustment. Operating machinery: Avoid driving or operating heavy equipment due to possible drowsiness. Concurrent CNS depressants: May potentiate sedation and respiratory depression. Store at room temperature: Keep in the original container, protect from moisture and light.

Promethazine Hydrochloride can interact with other medicines, altering its efficacy or safety profile.

Major Interactions (Avoid): - Alcohol: additive central nervous system depression leading to profound sedation. - Opioids: enhanced respiratory depression and sedation. - Benzodiazepines or barbiturates: increased sedative effect and risk of respiratory compromise. - Anticholinergic drugs: cumulative anticholinergic burden may cause severe dry mouth, urinary retention, or confusion.

Moderate Interactions (Monitor Closely): - Antihypertensives: possible additive hypotensive effect. - Tricyclic antidepressants: increased anticholinergic side effects. - Theophylline: promethazine may raise plasma theophylline concentrations.