Giltuss Allergy and Sinus

Chlorpheniramine is an antihistamine that helps lessen the effects of the natural chemical histamine in your body. Histamine can cause symptoms like sneezing, itching, watery eyes, and a runny nose.

Phenylephrine is a decongestant that helps shrink blood vessels in the nasal passages. When blood vessels are enlarged, it can lead to nasal congestion (a stuffy nose).

Giltuss Allergy and Sinus is a combination medicine that treats symptoms of the common cold or seasonal allergies, such as sneezing, runny or stuffy nose, and itchy, watery eyes.

Giltuss Allergy and Sinus may also be used for reasons not mentioned in this medication guide.

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.

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.

You should not use antihistamine medication to make a child sleepy.

Do not crush, chew, break, or open an extended-release tablet or capsule. Swallow it whole. Breaking or opening the pill may cause too much of the drug to be released at one time.

The chewable tablet must be chewed before swallowing.

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

Call your doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache, cough, or skin rash.

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

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

Store at room temperature away from moisture and heat.

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

You should not use antihistamine medication to make a child sleepy.

You should not use Giltuss Allergy and Sinus if you are allergic to chlorpheniramine or phenylephrine.

Do not use this medicine if you have taken an MAO inhibitor in the last 14 days. A dangerous drug interaction could happen. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.

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 a recent heart attack;
• an enlarged prostate or urination problems;
• glaucoma;
• diabetes;
• epilepsy or another seizure disorder;
• pheochromocytoma (an adrenal gland tumor);
• an overactive thyroid; or
• if you take potassium (Cytra, Epiklor, K-Lyte, K-Phos, Kaon, Klor-Con, Polycitra, Urocit-K).

It is not known whether Giltuss Allergy and Sinus will harm an unborn baby. Do not use this medicine without your doctor's advice if you are pregnant.

It is not known whether chlorpheniramine and phenylephrine pass into breast milk or if they could harm a nursing baby. Antihistamines and decongestants may also slow down breast milk production. Do not use this medicine without your doctor's advice if you are breast-feeding a baby.

Older adults may have a higher chance of experiencing side effects from this medicine.

Artificially sweetened liquid cold medicine may contain phenylalanine. If you have phenylketonuria (PKU), check the medication label to see if the product contains phenylalanine.

Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Giltuss Allergy and Sinus may cause serious side effects. Stop using Giltuss Allergy and Sinus and call your doctor right away if you have:

• 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).

Common side effects of Giltuss Allergy and Sinus 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.

Since cold medicine is used as needed, you might not have a dosing schedule. If you are taking the medication regularly, take the missed dose as soon as you remember. If it is almost time for your next scheduled dose, skip the missed dose. Do not take extra medicine to make up for the missed dose.

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

This medication may affect your thinking or reactions. Be cautious if you drive or do anything that needs you to be alert.

Drinking alcohol can increase some side effects of chlorpheniramine and phenylephrine.

Ask a doctor or pharmacist before using any other cold, allergy, or sleep medicine. Giltuss Allergy and Sinus is included in many combination medicines. Taking certain products together can lead to taking too much of a specific drug. Check the label to see if a medicine has an antihistamine or decongestant.

Ask a doctor or pharmacist before using Giltuss Allergy and Sinus if you are taking 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.

Taking this medicine with other drugs that make you sleepy or slow your breathing can make these effects worse. Ask your doctor before taking Giltuss Allergy and Sinus with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.