Oxomemazine Sans Sucre Biogaran (Oxomemazine)

Oxomemazine is a first‑generation H1‑receptor antagonist that reduces histamine‑mediated responses in allergic conditions.

• Allergic rhinitis: alleviates sneezing, itching and nasal discharge.
• Acute urticaria: diminishes wheals and itching associated with hives.
• Pruritus of dermatologic origin: eases skin itching caused by various dermatologic disorders.

• Oxomemazine blocks the H1 histamine receptors in peripheral tissues and the central nervous system, preventing histamine from binding and triggering the cascade that leads to vasodilation, increased vascular permeability and sensory nerve activation. This antagonism reduces the classic signs of allergic inflammation and also produces mild sedative effects through central H1 blockade.

Oxomemazine may cause a range of adverse reactions, most of which are mild and transient.

Common Side Effects

• Drowsiness: feeling of sleepiness or reduced alertness.
• Dry mouth: reduced salivation leading to a dry oral cavity.
• Dizziness: light‑headed sensation, especially when standing quickly.
• Gastrointestinal discomfort: nausea, stomach pain or mild constipation.
• Blurred vision: temporary difficulty focusing.

Serious or Rare Side Effects

• Cardiac arrhythmias: irregular heart rhythm that may require medical attention.
• Severe allergic reaction: rash, swelling, or difficulty breathing.
• Extrapyramidal symptoms: muscle rigidity or tremor.
• Hepatotoxicity: signs of liver injury such as jaundice.
• Hematologic abnormalities: unexplained bruising or bleeding.

When prescribing Oxomemazine, clinicians should consider several safety aspects.

• Pregnancy: avoid use unless the potential benefit justifies the risk.
• Breastfeeding: monitor infant for sedation; consider alternative therapy.
• Elderly patients: start with a low dose and watch for excessive sedation.
• Concomitant CNS depressants: may enhance drowsiness and impair coordination.
• Driving or operating machinery: advise patients to avoid until they know how the drug affects them.
• Store at ambient temperature: keep in the original packaging, protect from moisture and direct sunlight.

Oxomemazine can interact with other medicines, altering its efficacy or safety profile. Major Interactions (Avoid):\n- Monoamine oxidase inhibitors (MAOIs): risk of severe hypotension.

• Other antihistamines: additive sedation and anticholinergic effects.
• CNS depressants (e.g., benzodiazepines): heightened drowsiness and respiratory depression.

Moderate Interactions (Monitor Closely)

• Alcohol: may increase sedation and impair psychomotor performance.
• Anticholinergic drugs: enhanced dry‑mouth and urinary retention.
• CYP450 inhibitors: may raise plasma levels of oxox.
• CYP 3‑