Entex HC

Name: Entex HC

Entex HC (guaifenesin, hydrocodone, and pseudoephedrine) side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Stop using this medicine and call your doctor at once if you have:

  • severe dizziness or drowsiness;

  • weak or shallow breathing;

  • severe restlessness or nervousness;

  • severe constipation;

  • pounding heartbeats or fluttering in your chest;

  • painful or difficult urination; or

  • little or no urinating.

Common side effects may include:

  • mild drowsiness;

  • dryness of your eyes, nose, and mouth;

  • blurred vision; or

  • nausea, vomiting, diarrhea, constipation.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

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