Robitussin Nighttime Cough DM

Dextromethorphan is a medicine that stops coughing. It works on the brain to block the signals that make you cough.

Doxylamine is a type of antihistamine that helps lessen the effects of histamine, a natural chemical in the body. Histamine can cause sneezing, itching, watery eyes, and a runny nose.

Robitussin Nighttime Cough DM is used to help with cough, runny or stuffy nose, sneezing, itching, and watery eyes that come from allergies, the common cold, or the flu.

Robitussin Nighttime Cough DM will not help with a cough caused by smoking, asthma, or emphysema.

Robitussin Nighttime Cough DM may also be used for other reasons that are not mentioned in this medication guide.

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

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.

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

If you need surgery or medical tests, tell the surgeon or doctor in advance if you have taken Robitussin Nighttime Cough DM within the past few days.

Store at room temperature, away from moisture and heat. Do not let the liquid freeze.

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

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.

You should not use this medicine if you are allergic to dextromethorphan or doxylamine.

Do not use Robitussin Nighttime Cough DM if you have taken an MAO inhibitor in the last 14 days. This could lead to a dangerous drug interaction. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.

Do not give this medication to a child younger than 4 years old. Always consult a doctor before giving a cough or cold medicine to a child. Misuse of cough and cold medicines in very young children can lead to death.

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

To ensure Robitussin Nighttime Cough DM is safe for you, inform your doctor if you have:

• high blood pressure, heart disease;
• a thyroid disorder;
• a blockage in your digestive tract (stomach or intestines);
• liver or kidney disease;
• diabetes;
• cough with mucus, or cough caused by emphysema or chronic bronchitis;
• bladder obstruction or other urination problems; or
• if you take potassium (Cytra, Epiklor, K-Lyte, K-Phos, Kaon, Klor-Con, Polycitra, Urocit-K).

It is not known whether Robitussin Nighttime Cough DM will harm an unborn baby. Ask a doctor before using this medicine if you are pregnant.

Dextromethorphan and doxylamine may pass into breast milk and may harm a nursing baby. Antihistamines may also reduce breast milk production. Ask a doctor before using this medicine if you are breast-feeding.

Cough or cold medicine that is artificially sweetened 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; trouble breathing; swelling of your face, lips, tongue, or throat.

Robitussin Nighttime Cough DM may cause serious side effects. Stop using Robitussin Nighttime Cough DM and call your doctor right away if you have:

• severe dizziness or anxiety;
• a light-headed feeling, like you might faint;
• little or no urination; or
• liver problems—nausea, upper stomach pain, itching, feeling very tired, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes).

Common side effects of Robitussin Nighttime Cough DM may include:

• drowsiness, dizziness;
• nervousness;
• sleep problems (insomnia); 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 Robitussin Nighttime Cough DM is taken as needed, you might not follow a specific dosing schedule. If you are on a schedule, take the missed dose as soon as you remember. If it's 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 attention or call the Poison Help line at 1-800-222-1222.

Drinking alcohol can make some side effects of dextromethorphan and doxylamine worse.

Ask a doctor or pharmacist before using any other cold, cough, allergy, or sleep medicine. Many combination medicines have dextromethorphan or doxylamine. Taking certain products together can lead to taking too much of Robitussin Nighttime Cough DM.

This medicine may cause blurred vision or affect your thinking or reactions. Avoid driving or using machinery until you know how Robitussin Nighttime Cough DM will affect you.

Ask a doctor or pharmacist before using this medicine 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 included in this medication guide.

Taking this medicine with other drugs that make you sleepy or slow your breathing can increase these effects. Ask your doctor before taking Robitussin Nighttime Cough DM with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.