Guaifenesin And Phenylephrine: What Should I Discuss With My Healthcare Provider Before Taking Guaifenesin And Phenylephrine

Content provided by Cerner Multum, Inc.

What should I discuss with my healthcare provider before taking guaifenesin and phenylephrine?

Do not take guaifenesin and phenylephrine if you have taken a monoamine oxidase inhibitor (MAOI) such as isocarboxazid (Marplan), phenelzine (Nardil), or tranylcypromine (Parnate) in the last 14 days. A drug interaction could occur, leading to serious side effects.

Before taking this medication, tell your doctor if you have

• high blood pressure or heart disease;
• diabetes;
• a peripheral vascular disorder (poor circulation to the hands and feet);
• glaucoma or increased pressure in the eye(s);
• an overactive thyroid; or
• difficulty urinating or an enlarged prostate.

You may not be able to take guaifenesin and phenylephrine, or you may require a dosage adjustment or special monitoring during treatment if you have any of the conditions listed above.

Guaifenesin and phenylephrine is in the FDA pregnancy category C. This means that it is not known whether guaifenesin and phenylephrine will harm an unborn baby. Do not take this medication without first talking to your doctor if you are pregnant or could become pregnant during treatment. .

This medication passes into breast milk and may harm a nursing infant. Do not take this medication without first talking to your doctor if you are breast-feeding a baby.

If you are over 60 years of age, you may be more likely to experience side effects from guaifenesin and phenylephrine. You may require a lower dose of this medication.

E-mail This | Print This Previous Chapter | Next Chapter

Last updated:	October 19, 2005