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GUAIFENESIN; PHENYLEPHRINE (gwye FEN e sin; fen il EF rin) treats the symptoms of the common cold, allergies, or flu. It works by decreasing a runny or stuffy nose and loosening mucus. It is a combination of a decongestant and an expectorant.
This medicine may be used for other purposes; ask your health care provider or pharmacist if you have questions.
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Take this medication by mouth with water. Take it as directed on the label. You can take it with or without food. If it upsets your stomach, take it with food. Do not take it more often than directed.
Talk to your care team about the use of this medication in children. While it may be given to children as young as 6 years for selected conditions, precautions do apply.
People 65 years and older may have a stronger reaction and need a smaller dose.
Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.
NOTE: This medicine is only for you. Do not share this medicine with others.
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Do not take this medication with any of the following:
-Ergot alkaloids, such as dihydroergotamine, ergotamine, methylergonovine
-MAOIs, such as Marplan, Nardil, and Parnate
This medication may also interact with the following:
-Certain medications for depression, such as amitriptyline or nortriptyline
-Medications that cause drowsiness before a procedure
-St. John's wort
-Stimulant medications for ADHD, weight loss, or staying awake
This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, or dietary supplements you use. Also tell them if you smoke, drink alcohol, or use illegal drugs. Some items may interact with your medicine.
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Visit your care team for regular checks on your progress. Tell your care team if your symptoms do not start to get better or if they get worse. If you need to use this medication for more than 7 days, talk to your care team.
This medication may affect your coordination, reaction time, or judgment. Do not drive or operate machinery until you know how this medication affects you. Sit up or stand slowly to reduce the risk of dizzy or fainting spells. Drinking alcohol with this medication can increase the risk of these side effects.
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This does not apply. This medication is not for regular use. It should only be used as needed.
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Side effects that you should report to your care team as soon as possible:
-Allergic reactions—skin rash, itching, hives, swelling of the face, lips, tongue, or throat
-Heart palpitations—rapid, pounding, or irregular heartbeat
-Increase in blood pressure
Side effects that usually do not require medical attention (report these to your care team if they continue or are bothersome):
-Anxiety, nervousness
-Dizziness
-Drowsiness
-Headache
-Trouble sleeping
This list may not describe all possible side effects. 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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Keep out of the reach of children and pets.
Store at room temperature between 20 and 25 degrees C (68 and 77 degrees F). Get rid of any unused medication after the expiration date.
To get rid of medications that are no longer needed or have expired:
-Take the medication to a medication take-back program. Check with your pharmacy or law enforcement to find a location.
-If you cannot return the medication, check the label or package insert to see if the medication should be thrown out in the garbage or flushed down the toilet. If you are not sure, ask your care team. If it is safe to put it in the trash, empty the medication out of the container. Mix the medication with cat litter, dirt, coffee grounds, or other unwanted substance. Seal the mixture in a bag or container. Put it in the trash.
NOTE: This sheet is a summary. It may not cover all possible information. If you have questions about this medicine, talk to your doctor, pharmacist, or health care provider.
DISCLAIMER: This drug information content is provided for informational purposes only and is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Patients should always consult their physician with any questions regarding a medical condition and to obtain medical advice and treatment. Drug information is sourced from GSDD (Gold Standard Drug Database ) provided by Elsevier.
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