chlorpheniramine and pseudoephedrine

What is the most important information I should know about this medicine?

Do not use this medicine if you have used an MAO inhibitor in the past 14 days, such as isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, or tranylcypromine.

What is chlorpheniramine and pseudoephedrine?

Chlorpheniramine is an antihistamine that reduces the effects of natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.

Pseudoephedrine is a decongestant that shrinks blood vessels in the nasal passages. Dilated blood vessels can cause nasal congestion (stuffy nose).

Chlorpheniramine and pseudoephedrine is a combination medicine used to treat symptoms of the common cold or seasonal allergies, including sneezing, runny or stuffy nose, and itchy, watery eyes.

Chlorpheniramine and pseudoephedrine may also be used for purposes not listed in this medication guide.

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

Do not use this medicine 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.

Ask a doctor or pharmacist if it is safe for you to take this medicine if you have:

• asthma or COPD, cough with mucus, or cough caused by smoking, emphysema, or chronic bronchitis;
• a blockage in your stomach or intestines;
• kidney or liver disease;
• high blood pressure, heart disease, coronary artery disease, or recent heart attack;
• enlarged prostate or urination problems;
• glaucoma;
• diabetes;
• epilepsy or other seizure disorder;
• pheochromocytoma (an adrenal gland tumor);
• overactive thyroid; or
• if you take potassium (Cytra, Epiklor, K-Lyte, K-Phos, Kaon, Klor-Con, Polycitra, Urocit-K).

Artificially sweetened liquid medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).

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. Cold medicine is usually taken only for a short time until your symptoms clear up.

The chewable tablet must be chewed before swallowing.

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

If you need surgery, tell the surgeon ahead of time if you have taken a cold medicine within the past few days.

This medication can cause unusual results with allergy skin tests. Tell any doctor who treats you that you are taking an antihistamine.

What happens if I miss a dose?

Since cold medicine is taken as needed, you may not be on a dosing schedule. If you are taking the medication regularly, take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

What should I avoid while taking this medicine?

Ask a doctor or pharmacist before using any other cold, allergy, or sleep medicine. Many combination medicines contain chlorpheniramine or pseudoephedrine. Taking certain products together can cause you to get too much of this medicine. Check the label to see if a medicine contains an antihistamine or decongestant.

What are the possible side effects of this medicine?

• chest pain, rapid pulse, fast or uneven heart rate;
• confusion, hallucinations, severe nervousness;
• tremor, seizure (convulsions);
• little or no urinating;
• easy bruising or bleeding, unusual weakness; or
• dangerously high blood pressure (severe headache, buzzing in your ears, anxiety, shortness of breath).

Side effects such as dry mouth, constipation, and confusion may be more likely in older adults.

Common side effects may include:

• dizziness, drowsiness, blurred vision;
• dry nose or mouth;
• nausea, stomach pain, constipation, loss of appetite;
• problems with memory or concentration; or
• feeling restless or excited (especially in children).

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1 800 FDA 1088.

What other drugs will affect chlorpheniramine and pseudoephedrine?

Ask a doctor or pharmacist before using this medicine if you are also using any other drugs, including prescription and over-the-counter medicines, vitamins, and herbal products. Some medicines can cause unwanted or dangerous effects when used together. Not all possible interactions are listed in this medication guide.

Where can I get more information?

Your pharmacist can provide more information about chlorpheniramine and pseudoephedrine.