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Gripex PE Oral

Generic Name: GUAIFENESIN/PHENYLEPHRINE - ORAL
Pronounced: (gweye-FEN-eh-sin/fen-ill-EFF-rin)

Gripex PE Oral Side Effects

Nausea, stomach upset, nervousness, trouble sleeping, dizziness, or headache may occur. If any of these effects persist or worsen, tell your doctor or pharmacist promptly.

If your doctor has directed you to use this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.

Tell your doctor immediately if any of these unlikely but serious side effects occur:

  • shaking (tremor)
  • fast/irregular/pounding heartbeat
  • difficult/painful urination
  • trouble breathing
  • mental/mood changes (e.g., irritability, confusion, hallucinations)


A very serious allergic reaction to this drug is rare. However, seek immediate medical attention if you notice any symptoms of a serious allergic reaction, including:

  • rash
  • itching
  • swelling
  • severe dizziness
  • trouble breathing


This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.

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