You should not use this medicine if you are allergic to dextromethorphan or promethazine, or if you have:
- asthma or other breathing problems; or
- an allergy to medicines similar to promethazine (chlorpromazine, fluphenazine, prochlorperazine, thioridazine, and others).
What is the most important information I should know about Promethazine DM (Dextromethorphan And Promethazine)? Do not use this medicine if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, tranylcypromine, and others.
Tell your doctor if you have ever had:
- chronic obstructive pulmonary disease (COPD), sleep apnea, or other breathing disorder;
- a seizure;
- bone marrow depression;
- a stomach ulcer;
- blockage in your stomach or intestines;
- a bladder obstruction or other urination problems;
- an enlarged prostate;
- liver disease;
- heart problems; or
- if you are on bed rest or otherwise debilitated.
Tell your doctor if you are pregnant or breastfeeding.
Taking this medicine during the last 2 weeks of pregnancy may increase the risk of bleeding in the newborn baby.
Ask a doctor before giving this medicine to a child younger than 12 years old.What is the most important information I should know about Promethazine DM (Dextromethorphan And Promethazine)?