dextromethorphan qt prolongation hytrin

It is available over-the-counter alone and is also present in many over-the-counter and prescription combination medications.Dextromethorphan will not treat a cough that is caused by smoking, asthma, or emphysema.Do not give dextromethorphan to a child younger than 4 years old.Always ask a doctor before giving a cough or cold medicine to a child. Approximately 4 million children younger than 12 years are treated with nonprescription cough and cold products each week in the United States. In general, knowing as much as possible about your family's health history will help your doctor determine the next steps for your diagnosis and treatment.Mayo Clinic does not endorse companies or products. If you do not have a dose-measuring device, ask your pharmacist for one.Allow the dextromethorphan lozenge or disintegrating strip to dissolve in your mouth.Drink extra fluids to help loosen the congestion and lubricate your throat while you are taking this medication. JAMA 289:16 2123. If you take certain products together you may accidentally take too much of this medicine.

It may change the way your heart beats and cause fainting or serious side effects in some patients. QT prolongation can cause torsades de pointes–type ventricular tachycardia, with the risk increasing as the degree of prolongation increases. Do not take other medicines unless they have been discussed with your doctor. Wesley RC Jr, Turnquest P "Torsades de pointe after intravenous adenosine in the presence of prolonged QT syndrome." You may report side effects to FDA at 1-800-FDA-1088.Before taking dextromethorphan, tell your doctor if you are using any of the following drugs:antidepressant medications such as amitriptyline (Elavil, Etrafon), bupropion (Wellbutrin, Zyban), fluoxetine (Prozac, Sarafem), fluvoxamine (Luvox), imipramine (Janimine, Tofranil), paroxetine (Paxil), sertraline (Zoloft), and others.This list is not complete and there are numerous other drugs that can interact with dextromethorphan. "Mayo," "Mayo Clinic," "MayoClinic.org," "Mayo Clinic Healthy Living," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research. Your doctor may want to perform an electrocardiogram (ECG) on you to check your heart rate and rhythm.

Dextromethorphan is a cough suppressant. Overdose can also result in coma or death.Avoid drinking alcohol. Dextromethorphan will not treat a cough that is caused by smoking, asthma, or emphysema.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. Take steps to help your loved ones better understand how to support you and care for you in an emergency.If you develop signs and symptoms of long QT syndrome, contact your doctor. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes.Mayo Clinic does not endorse companies or products. Data sources include IBM Watson Micromedex (updated 2 Sep 2020), Cerner Multum™ (updated 1 Sep 2020), … This information is generalized and not intended as specific medical advice. Epub 2010 Oct 13. This abnormality reflects a disturbance in how your heart's bottom chambers (ventricles) conduct electricity.An electrocardiogram is a quick and painless test that records the electrical signals in your heart. Portions of this document last updated: Sept. 01, 2020Copyright © 2020 IBM Watson Health.

Make sure you know how you react to this medicine before you drive, use machines, or do other jobs that require you to be alert and well-coordinated. Tell your doctor if you are pregnant or plan to become pregnant during treatment. An ECG measures the timing and duration of each electrical phase in your heartbeat. You might have an The space between the start of the Q wave and the end of the T wave is the QT interval. Do not take extra medicine to make up the missed dose.Seek emergency medical attention if you think you have used too much of this medicine.Overdose symptoms may include nausea, vomiting, drowsiness, dizziness, difficulty breathing, fast heartbeat, or seizures (convulsions). 2011 May 5;148(3):363-4. doi: 10.1016/j.ijcard.2010.09.024. All rights reserved. Any use of this site constitutes your agreement to the Terms and Conditions and Privacy Policy linked below. Cough medicine is usually taken only for a short time until your symptoms clear up.Do not give dextromethorphan to a child younger than 4 years old.Always ask a doctor before giving cough or cold medicine to a child.
Electrocardiogram (ECG).
Medications associated with prolonged QT / long QT. absence of drugs from these lists should not be considered an indication that they are free of risk of QT prolongation or torsades de pointes. Dextromethorphan is contained in many combination medicines available over the counter.

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