Hidroxizina Qualigen (Hydroxyzine Hydrochloride)

Hidroxizina Qualigen is indicated for several therapeutic purposes where its antihistaminic and central nervous system effects are beneficial.

• Relief of allergic skin conditions such as dermatitis or urticaria.
• Management of pruritus associated with systemic or dermatologic disorders.
• Short‑term treatment of anxiety or tension symptoms.
• Pre‑operative sedation to reduce anxiety and produce a calming effect before surgery.
• Adjunctive therapy for itching related to liver disease or renal failure.

• Hydroxyzine hydrochloride acts as a selective antagonist of peripheral H1 histamine receptors, preventing histamine‑mediated vasodilation, increased vascular permeability, and sensory nerve activation. In the central nervous system it penetrates the blood‑brain barrier and exerts anticholinergic activity while enhancing GABAergic neurotransmission, which contributes to its anxiolytic and sedative properties. The combined peripheral and central actions underlie its clinical effects.

Adverse reactions to Hidroxizina Qualigen vary in frequency and severity.

Common

• Drowsiness or sedation.
• Dry mouth.
• Blurred vision.
• Constipation.

Serious

• Severe hypotension.
• Cardiac arrhythmias.
• Allergic reactions such as rash, angioedema, or anaphylaxis.
• Extrapyramidal symptoms.

Before prescribing Hidroxizina Qualigen, clinicians should consider the following precautions.

• Assess for history of glaucoma, urinary retention, or prostatic hypertrophy, as anticholinergic effects may worsen these conditions.
• Use caution in patients with cardiovascular disease, especially those prone to hypotension or arrhythmias.
• Evaluate hepatic or renal impairment; dose adjustments may be required.
• Avoid use in pregnancy or lactation unless the benefit outweighs the risk, due to limited safety data.
• Monitor elderly patients closely because they are more susceptible to sedation and falls.
• Do not combine with other central nervous system depressants without medical guidance.

Hidroxizina Qualigen may interact with several other medicines; consider the following categories.

Avoid

• Concurrent use with other antihistamines or sedating antihistamines.
• Co‑administration with monoamine oxidase inhibitors (MAOIs) or within 14 days of stopping an MAOI.
• Combining with potent CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin) that may increase hydroxyzine levels.

Use with caution

• Alcohol or other CNS depressants (opioids, benzodiazepines, barbiturates).
• Drugs that prolong the QT interval (certain antiarrhythmics, antipsychotics).
• Medications that affect hepatic metabolism (e.g., cimetidine).
• Anticholinergic agents that may increase dry mouth or urinary retention.