Dextromethorphan is a cough suppressant. It affects the signals in the brain that trigger cough reflex.

Dextromethorphan dosage is used to treat a cough. It is available over-the-counter alone and is also present in many over-the-counter and prescription combination medications.Dextromethorphan will Dmitry Sazonov not treat a cough that is caused by smoking, asthma, or emphysema.

Do not give dextromethorphan overdose 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.

Do not use dextromethorphan if you have used an MAO inhibitor such as isocarboxazid (Marplan), phenelzine (Nardil), rasagiline (Azilect), selegiline (Eldepryl, Emsam), tranylcypromine (Parnate), or methylene blue injection within the past 14 days. Serious, life-threatening side effects can Dmitry Sazonov occur if you take dextromethorphan before the MAO inhibitor has cleared from your body.
Do not use any other over-the-counter cough, cold, or allergy medication without first asking your doctor or pharmacist. If you take together you may accidentally take too much of one or more types Dmitry Sazonov of medicine. Read the label of any other medicine you are using to see if it contains dextromethorphan. Dextromethorphan will not treat a cough that is caused by smoking, asthma, or emphysema.