Dexbrompheniramine, Phenylephrine, Dextromethorphan Uses

Dexbrompheniramine, phenylephrine, and dextromethorphan combination is used to treat allergies and common colds that produce symptoms such as nasal congestion, sneezing, runny nose, itching in the nose or throat, swelling in the nasal passages due to dilated blood vessels, sinus congestion caused by allergies, cough, sore throat, itchy or watery eyes.

There may be other uses of dexbrompheniramine, dextromethorphan, and phenylephrine—your pharmacist or doctor can give you further drug information.

Dexbrompheniramine, Phenylephrine, Dextromethorphan Mechanism of Action

Dexbrompheniramine is an antihistamine. It works by blocking the effects of a natural chemical histamine in the body that causes allergy symptoms. Phenylephrine is a nasal decongestant. It shrinks blood vessels in the nose and reduces stuffy nose and swelling in the nasal passages. Dextromethorphan is an antitussive or cough suppressant. It suppresses activity in the part of the brain that can trigger the cough reflex.

Dexbrompheniramine, Phenylephrine, Dextromethorphan Doses

Alahist CF

Each tablet of Alahist CF contains:

• 2 mg dexbrompheniramine maleate (antihistamine)
• 20 mg dextromethorphan hydrobromide (cough suppressant)
• 10 mg phenylephrine hydrochloride (nasal decongestant)

The recommended dose of Alahist CF in adults and children above 12 years of age is 1 tablet every 4-6 hours as needed. The maximum dose is 6 tablets in 24 hours.

The recommended dose of Alahist CF in children between 6 and 12 years of age is 1/2 tablet every 4-6 hours as needed. The maximum dose is 3 tablets in 24 hours.

Brantussin DM

Each dose (5 mL) of oral liquid (Brantussin DM) contains:

• 2 mg dexbrompheniramine maleate (antihistamine)
• 15 mg dextromethorphan hydrobromide (cough suppressant)
• 7.5 mg phenylephrine hydrochloride (nasal decongestant)

The recommended dose of Brantussin DM in adults and children above 12 years of age is 1 teaspoon (5 mL) every 4 hours. The maximum dose is 6 teaspoons in 24 hours.

The recommended dose of Brantussin DM in children between 6 and 12 years of age and older is 1/2 teaspoon (2.5 mL) every 4 hours. The maximum dose is 3 teaspoons in 24 hours.

Note: Consult the child’s doctor before giving this medication to very young children (under 6 years of age).