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Respiratory Handbook

The professional's guide to product selection

Sedating antihistamines

Allerief - Chlorphenamine maleate

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Boots Allergy Relief 1 Year Plus Antihistamine - Chlorphenamine maleate

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - AAH Pharmaceuticals Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Alliance Healthcare (Distribution)

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Almus Pharmaceuticals Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Bristol Laboratories Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.
• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Crescent Pharma Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - DE Pharmaceuticals

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Kent Pharmaceuticals

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Kyowa Kirin

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.
• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Lloyds Pharmacy Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.
• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Martindale Pharmaceuticals Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Medihealth (Northern) Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Phoenix Healthcare Distribution Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - RX Farma

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Sigma Pharmaceuticals Plc

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Strides Pharma UK Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Synchrony Pharma Ltd

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Chlorphenamine maleate - Wockhardt

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Hayleve - Chlorphenamine maleate

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Numark Antihistamine - Chlorphenamine maleate

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.
• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: maximum 12 mg daily.

Phenergan - Promethazine hydrochloride

Sedating antihistamine.

By mouth
• Child 2–4 years: 5 mg twice daily, alternatively 5–15 mg once daily, dose to be taken at night.
• Child 5–9 years: 5–10 mg twice daily, alternatively 10–25 mg once daily, dose to be taken at night.
• Child 10–17 years: 10–20 mg 2–3 times a day, alternatively 25 mg once daily, dose to be taken at night. Increase if necessary to 25 mg twice daily.
• Adult: 10–20 mg, 2–3 times daily.

By deep intramuscular injection
• Adult: 25–50 mg, maximum 100 mg.

By slow intravenous injection in emergencies
• 25–50 mg as a solution containing 2.5 mg/ml in water for injections, maximum 100 mg.

Piriton - Chlorphenamine maleate

Sedating antihistamine.

By mouth for symptomatic relief of allergy such as hay fever, urticaria, food allergy, drug reactions, relief of itch associated with chickenpox.


• Child 1–23 months: 1 mg, twice daily.
• Child 2–5 years: 1 mg, every 4–6 hours, maximum 6 mg daily.
• Child 6–11 years: 2 mg, every 4–6 hours, maximum 12 mg daily.
• Over 12 years: 4 mg, every 4–6 hours, maximum 24 mg daily
• Elderly: 4 mg, every 4–6 hours, maximum 12 mg daily.


Emergency treatment of anaphylactic reactions or symptomatic relief of allergy by intramuscular injection or by intravenous injection over 1 minute.
• Child 1–5 months: 250 mcg/kg (maximum per dose 2.5 mg), max 4 doses daily
• Child 6 months–5 years: 2.5 mg, maximum 4 doses per day.
• Child 6–11 years: 5 mg, maximum 4 doses per day.
• Over 12 years: 10 mg, maximum 4 doses per day.

Promethazine hydrochloride - AAH Pharmaceuticals Ltd

Sedating antihistamine.

By mouth
• Child 2–4 years: 5 mg twice daily, alternatively 5–15 mg once daily, dose to be taken at night.
• Child 5–9 years: 5–10 mg twice daily, alternatively 10–25 mg once daily, dose to be taken at night.
• Child 10–17 years: 10–20 mg 2–3 times a day, alternatively 25 mg once daily, dose to be taken at night. Increase if necessary to 25 mg twice daily.
• Adult: 10–20 mg, 2–3 times daily.

Promethazine hydrochloride - Alliance Healthcare

Sedating antihistamine.

By mouth
• Child 2–4 years: 5 mg twice daily, alternatively 5–15 mg once daily, dose to be taken at night.
• Child 5–9 years: 5–10 mg twice daily, alternatively 10–25 mg once daily, dose to be taken at night.
• Child 10–17 years: 10–20 mg 2–3 times a day, alternatively 25 mg once daily, dose to be taken at night. Increase if necessary to 25 mg twice daily.
• Adult: 10–20 mg, 2–3 times daily.

Promethazine hydrochloride - DE Pharmaceuticals

Sedating antihistamine.

By mouth
• Child 2–4 years: 5 mg twice daily, alternatively 5–15 mg once daily, dose to be taken at night.
• Child 5–9 years: 5–10 mg twice daily, alternatively 10–25 mg once daily, dose to be taken at night.
• Child 10–17 years: 10–20 mg 2–3 times a day, alternatively 25 mg once daily, dose to be taken at night. Increase if necessary to 25 mg twice daily.
• Adult: 10–20 mg, 2–3 times daily.

Promethazine hydrochloride - Genesis Pharmaceuticals Ltd

Sedating antihistamine.

By mouth
• Child 2–4 years: 5 mg twice daily, alternatively 5–15 mg once daily, dose to be taken at night.
• Child 5–9 years: 5–10 mg twice daily, alternatively 10–25 mg once daily, dose to be taken at night.
• Child 10–17 years: 10–20 mg 2–3 times a day, alternatively 25 mg once daily, dose to be taken at night. Increase if necessary to 25 mg twice daily.
• Adult: 10–20 mg, 2–3 times daily.

Promethazine hydrochloride - Medihealth (Northern) Ltd

Sedating antihistamine.

By mouth
• Child 2–4 years: 5 mg twice daily, alternatively 5–15 mg once daily, dose to be taken at night.
• Child 5–9 years: 5–10 mg twice daily, alternatively 10–25 mg once daily, dose to be taken at night.
• Child 10–17 years: 10–20 mg 2–3 times a day, alternatively 25 mg once daily, dose to be taken at night. Increase if necessary to 25 mg twice daily.
• Adult: 10–20 mg, 2–3 times daily.

Promethazine hydrochloride - Teva

Sedating antihistamine.

By mouth
• Child 2–4 years: 5 mg twice daily, alternatively 5–15 mg once daily, dose to be taken at night.
• Child 5–9 years: 5–10 mg twice daily, alternatively 10–25 mg once daily, dose to be taken at night.
• Child 10–17 years: 10–20 mg 2–3 times a day, alternatively 25 mg once daily, dose to be taken at night. Increase if necessary to 25 mg twice daily.
• Adult: 10–20 mg, 2–3 times daily.

Sominex - Promethazine hydrochloride

Sedating antihistamine.

By mouth
• Child 2–4 years: 5 mg twice daily, alternatively 5–15 mg once daily, dose to be taken at night.
• Child 5–9 years: 5–10 mg twice daily, alternatively 10–25 mg once daily, dose to be taken at night.
• Child 10–17 years: 10–20 mg 2–3 times a day, alternatively 25 mg once daily, dose to be taken at night. Increase if necessary to 25 mg twice daily.
• Adult: 10–20 mg, 2–3 times daily.

Zaditen - Ketotifen

Sedating antihistamine.

For treatment of allergic rhinitis.
• Child 3–17 years: 1 mg twice daily.
• Adult: 1 mg, twice daily, increased if necessary to 2 mg twice daily, to be taken with food.