dextromethorphan and promethazine (cont.)
IN THIS ARTICLE
What happens if I miss a dose (Promethazine with Dextromethorphan, Promethazine with DM)?
Since cough and cold medicine is usually taken only 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. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
What happens if I overdose (Promethazine with Dextromethorphan, Promethazine with DM)?
Seek emergency medical attention if you think you have used too much of this medicine.
Symptoms of a dextromethorphan and promethazine overdose may include feeling restless or nervous, severe drowsiness, dizziness, dry mouth, large pupils, flushing, nausea, vomiting, shallow breathing, and fainting.
What should I avoid while taking dextromethorphan and promethazine (Promethazine with Dextromethorphan, Promethazine with DM)?
This medication can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.
Avoid drinking alcohol. It can increase some of the side effects of dextromethorphan and promethazine.
Avoid taking diet pills, caffeine pills, or other stimulants (such as ADHD medications) without your doctor's advice. Taking a stimulant together with cough medicine can increase your risk of unpleasant side effects.
Avoid using other drugs that make you sleepy (such as cold medicine, sleeping pills, pain medication, muscle relaxers, and medicine for seizures, depression or anxiety).
Do not use any other over-the-counter cough, cold, or allergy medication without first asking your doctor or pharmacist. Dextromethorphan is contained in many medicines available over the counter. If you take certain products together you may accidentally take too much of this medicine. Read the label of any other medicine you are using to see if it contains dextromethorphan.
What other drugs will affect dextromethorphan and promethazine (Promethazine with Dextromethorphan, Promethazine with DM)?
Before taking dextromethorphan and promethazine, tell your doctor if you are using any of the following drugs:
If you are using any of these drugs, you may not be able to use dextromethorphan and promethazine, or you may need dosage adjustments or special tests during treatment.
There may be other drugs not listed that can affect dextromethorphan and promethazine. Tell your doctor about all the prescription and over-the-counter medications you use. This includes vitamins, minerals, herbal products, and drugs prescribed by other doctors. Do not start using a new medication without telling your doctor.
Where can I get more information?
Your pharmacist has information about dextromethorphan and promethazine written for health professionals that you may read.
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
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