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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.
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 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.
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 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
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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Tell your doctor or health care professional if your symptoms do not improve within 5 days or if they get worse. If you have trouble falling asleep at night, take the last dose of the day at least a few hours before bedtime.
Drink 6 to 8 glasses water daily while you are taking this medicine to help loosen mucus.
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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.
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Side effects that you should report to your doctor or health care professional as soon as possible:
•allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
•confusion
•difficulty passing urine
•fast or irregular heartbeat
•hallucinations
•high blood pressure
•seizure
•tremor
•trouble breathing
Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):
•anxiety, excitement, irritability, nervousness
•diarrhea
•dizziness
•headache
•loss of appetite
•stomach upset, nausea
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.
Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Protect from light and moisture. Throw away any unused medicine after the expiration date.
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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