Side Effects of Dextromethorphan Polistirex

Although most people do not experience problems while using dextromethorphan polistirex, side effects are possible. Common ones include dizziness, nausea, and constipation. Serious problems have also been known to occur with this cough suppressant. Notify your healthcare provider right away if you experience seizures, hallucinations, difficulty breathing, or any other potentially dangerous side effects.

An Introduction to Dextromethorphan Polistirex Side Effects

Just like any medicine, dextromethorphan polistirex (Delsym®) can cause side effects. However, not everyone who takes the medication will have problems. In fact, most people tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are treated easily by you or your healthcare provider.
 
(This article covers many, but not all, of the possible side effects with dextromethorphan polistirex. Your healthcare provider can discuss a more complete list with you.)
 

Side Effects to Report

Some dextromethorphan polistirex side effects are potentially serious -- even life-threatening -- and should be reported to your healthcare provider. These include but are not limited to:
 
  • A rapid heart rate (tachycardia)
  • Slow or irregular breathing
  • Seizures
  • Difficulty passing urine
  • Unusual muscle contractions or movements
  • Psychosis or unusual thoughts or behaviors
  • Feeling the need to use dextromethorphan polistirex for a nonmedical reason
  • Signs of serotonin syndrome (a rare but dangerous problem associated with certain medications), such as:
     
    • Confusion or other mental changes
    • A rapid heart rate
    • Nausea
    • Vomiting
    • Diarrhea
    • Hallucinations
    • Blood pressure changes
    • Overactive reflexes
    • Fever
    • Shivering
    • Shakiness
    • Agitation
    • Sweating
    • Seizures
    • Coma
 
  • Signs of an allergic reaction, such as:
     
    • An unexplained rash
    • Hives
    • Itching
    • Unexplained swelling, especially of the mouth, lips, or throat
    • Wheezing or difficulty breathing
    • Difficulty swallowing.
 
These serious reactions are probably quite rare and are more likely to occur in cases of overdose or abuse.
 
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Dextromethorphan Polistirex Drug Information

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