Dexbrompheniramine, dextromethorphan, and pseudoephedrine

Name: Dexbrompheniramine, dextromethorphan, and pseudoephedrine

What should I discuss with my healthcare provider before taking this medicine?

Do not use dexbrompheniramine, dextromethorphan, and pseudoephedrine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.

To make sure this medicine is safe for you, tell your doctor if you have:

  • asthma or COPD, cough with mucus, or cough caused by smoking, emphysema, or chronic bronchitis;

  • a blockage in your digestive tract (stomach or intestines);

  • high blood pressure, heart disease;

  • liver or kidney disease;

  • glaucoma;

  • cough with mucus, or cough caused by emphysema or chronic bronchitis;

  • enlarged prostate or urination problems;

  • pheochromocytoma (an adrenal gland tumor);

  • overactive thyroid; or

  • if you take potassium (Cytra, Epiklor, K-Lyte, K-Phos, Kaon, Klor-Con, Polycitra, Urocit-K).

FDA pregnancy category C. It is not known whether dexbrompheniramine, dextromethorphan, and pseudoephedrine will harm an unborn baby. Do not use this medicine without a doctor's advice if you are pregnant.

This medicine can pass into breast milk and may harm a nursing baby. Antihistamines and decongestants may also slow breast milk production. Do not use this medicine without a doctor's advice if you are breast-feeding a baby.

How should I take this medicine?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. Cough or cold medicine is usually taken only for a short time until your symptoms clear up.

Do not give this medication to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.

Measure liquid medicine with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.

Do not take for longer than 7 days in a row. Talk with your doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache or skin rash.

If you need surgery or medical tests, tell the surgeon or doctor ahead of time if you have taken this medicine within the past few days.

Store at room temperature away from moisture and heat.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

What are some side effects that I need to call my doctor about right away?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.

Usual Adult Dose for Cough and Nasal Congestion

Dexbrompheniramine/dextromethorphan/pseudoephedrine 0.667 mg-10 mg-20 mg/5 mL oral liquid:
15 mL orally every 6 hours not to exceed 60 mL daily.

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