Noctis Forte (Doxylamine Hydrogen Succinate)

Doxylamine hydrogen succinate, the active ingredient in Noctis Forte, is a first‑generation antihistamine presented as an oral tablet for oral use. It provides short‑term relief of insomnia and alleviates symptoms of allergic rhinitis and the common cold in adults, acting through antihistaminic and anticholinergic mechanisms.

GNH USA supplies Noctis Forte as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Doxylamine hydrogen succinate works on histamine H1 receptors to manage several common conditions. - Insomnia: helps initiate and maintain sleep during short‑term use in adults. - Allergic rhinitis: reduces nasal congestion, sneezing, and itching caused by seasonal allergies. - Common cold: eases runny nose and sneezing associated with upper respiratory infections. - Nausea in pregnancy (off‑label): may lessen morning sickness when prescribed by a healthcare professional.

Adverse reactions may occur with doxylamine use and vary in frequency.

Common Side Effects: - Drowsiness: feeling unusually sleepy or fatigued. - Dry mouth: reduced salivation leading to a parched sensation. - Dizziness: light‑headed feeling, especially when standing quickly. - Blurred vision: temporary difficulty focusing. - Constipation: slowed intestinal motility. - Urinary retention: difficulty emptying the bladder.

Serious or Rare Side Effects: - Anaphylaxis: severe allergic reaction with rash, swelling, and breathing difficulty. - Cardiac arrhythmia: irregular heart rhythm, potentially life‑threatening. - Seizures: convulsive episodes in susceptible individuals. - Hallucinations: visual or auditory disturbances. - Severe confusion or delirium, particularly in the elderly. - Respiratory depression when combined with other CNS depressants.

Before using Noctis Forte, consider the following safety measures. - Use as directed: follow the prescriber's instructions and do not exceed recommended duration. - Avoid operating machinery: sedation may impair alertness and reaction time. - Caution in elderly: increased sensitivity to anticholinergic effects may raise fall risk. - Alcohol and CNS depressants: avoid concurrent use to prevent excessive sedation. - Contraindicated in narrow‑angle glaucoma: anticholinergic activity can worsen intra‑ocular pressure. - Pregnancy safety unknown: discuss risks with a healthcare professional before use. - Store below 25°C: keep in the original pack, protect from moisture.

Doxylamine may interact with other medicines, altering its effectiveness or safety.

Major Interactions (Avoid): - Alcohol or other CNS depressants: can cause profound sedation and respiratory depression. - Benzodiazepines: additive sedative effects increase risk of oversedation. - MAO inhibitors: may enhance anticholinergic and hypertensive reactions. - Other antihistamines: combined use raises risk of anticholinergic toxicity. - QT‑prolonging drugs: potential for cardiac arrhythmias.

Moderate Interactions (Monitor Closely): - CYP2D6 inhibitors (e.g., fluoxetine): may increase doxylamine plasma levels. - SSRIs or SNRIs: monitor for enhanced serotonergic side effects. - Antihypertensive agents: anticholinergic effect may blunt blood pressure control.