

807 Street 39MC, Phnom Penh, Cambodia
ALLERGYL Promethazine 25mg
No prescription required
This medicine is available over the counter. Still, please consult your doctor or pharmacist before using new medication.
Last updated 24/05/2026 at 2:11 AM

807 Street 39MC, Phnom Penh, Cambodia
Indication
ALLERGYL is a first-generation antihistamine (phenothiazine derivative) used for symptomatic relief of allergic conditions (urticaria, rhinitis, conjunctivitis), prevention and treatment of nausea and vomiting (including motion sickness), and as sedative premedication.
Ingredients
- Promethazine hydrochloride 25 mg
Direction
Adults: For allergy: 10–25 mg at night, or 10 mg 2–3 times daily. For nausea: 25 mg, repeated after 4–6 hours if needed. For motion sickness: 25 mg 1–2 hours before travel. Do not exceed 100 mg in 24 hours. Children over 5 years: 5–12.5 mg as directed by a physician.
Side effects
- Drowsiness and sedation (very common).
- Dry mouth
- blurred vision
- constipation
- urinary retention (anticholinergic).
- Dizziness
- confusion (especially in elderly).
- Rarely: extrapyramidal reactions
- photosensitivity.
- Paradoxical CNS excitation in children.
Precautions
- Contraindicated in children under 2 years — risk of fatal respiratory depression.
- Contraindicated with hypersensitivity to phenothiazines.
- Causes drowsiness — do not drive or operate machinery.
- Avoid alcohol and other CNS depressants.
- Use with caution in epilepsy
- liver disease
- cardiovascular disease
- and elderly patients.
- Keep out of reach of children.
Indication
ALLERGYL is a first-generation antihistamine (phenothiazine derivative) used for symptomatic relief of allergic conditions (urticaria, rhinitis, conjunctivitis), prevention and treatment of nausea and vomiting (including motion sickness), and as sedative premedication.
Ingredients
- Promethazine hydrochloride 25 mg
Direction
Adults: For allergy: 10–25 mg at night, or 10 mg 2–3 times daily. For nausea: 25 mg, repeated after 4–6 hours if needed. For motion sickness: 25 mg 1–2 hours before travel. Do not exceed 100 mg in 24 hours. Children over 5 years: 5–12.5 mg as directed by a physician.
Side effects
- Drowsiness and sedation (very common).
- Dry mouth
- blurred vision
- constipation
- urinary retention (anticholinergic).
- Dizziness
- confusion (especially in elderly).
- Rarely: extrapyramidal reactions
- photosensitivity.
- Paradoxical CNS excitation in children.
Precautions
- Contraindicated in children under 2 years — risk of fatal respiratory depression.
- Contraindicated with hypersensitivity to phenothiazines.
- Causes drowsiness — do not drive or operate machinery.
- Avoid alcohol and other CNS depressants.
- Use with caution in epilepsy
- liver disease
- cardiovascular disease
- and elderly patients.
- Keep out of reach of children.
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