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What is this medicine?

GUAIFENESIN; PHENYLEPHRINE (gwye FEN e sin; fen il EF rin) is a decongestant, expectorant combination. It is used to provide relief from cough and congestion. This medicine will not treat an infection.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of the following conditions:
  • blood vessel disease
  • diabetes
  • fever
  • glaucoma
  • heart disease or heart rhythm problems
  • high blood pressure
  • other chronic disease
  • prostate trouble
  • taken an MAOI like Carbex, Eldepryl, Marplan, Nardil, or Parnate within the last 14 days
  • thyroid disease
  • an unusual or allergic reaction to guaifenesin, phenylephrine, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast- feeding

How should I use this medicine?

Take this medicine by mouth with a full glass of water. Follow the directions on the prescription label. Take with food or milk. Do not crush or chew. Take your doses at regular times. Do not take more medicine than directed.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 6 years old for selected conditions, precautions do apply.

Patients over 60 years old may have a stronger reaction to this medicine and need smaller doses.

What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What may interact with this medicine?

Do not take this medicine with any of the following medications:
  • any stimulant medication
  • bromocriptine
  • ergot medications for headaches or some procedures
  • MAOIs like Carbex, Eldepryl, Marplan, Nardil, and Parnate
  • procarbazine

This medicine may also interact with the following medications:

  • indomethacin
  • mecamylamine
  • medicines for chest pain, heart disease, high blood pressure, or heart rhythm problems
  • medicines for depression or other mental disturbances
  • methyldopa
  • other medicines for allergies or colds
  • reserpine
  • some medicines used during surgery

               
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