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Carbetapentane, Guaifenesin, and Phenylephrine Contributions by FoundHealth

Article Revisions

(kar bay ta PEN tane, gwye FEN e sin, & fen il EF rin)

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Carbetaplex; Extendryl® GCP; Gentex LQ; Levall™ [DSC]; Phencarb GG

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Antitussive; Expectorant; Expectorant/Decongestant/Antitussive; Sympathomimetic

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• This medicine does not mix well with many medicines. Serious reactions may occur. Check all medicines with healthcare provider.

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• Do not give this medicine to a child younger than 1 year old.

• If you have an allergy to carbetapentane, guaifenesin, phenylephrine, or any other part of this medicine.

• Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other symptoms involved.

• If you have overactive thyroid disease.

• If you have taken isocarboxazid, phenelzine, or tranylcypromine in the last 14 days. Monoamine oxidase inhibitors (eg, isocarboxazid, phenelzine, and tranylcypromine) must be stopped 14 days before this medicine is started. Taking the two together could cause dangerously high blood pressure.

• If you are breast-feeding.

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• Carbetapentane affects the cough center in the brain.

• Guaifenesin thins fluids in the lungs.

• Phenylephrine shrinks swollen nasal tissue and opens up passages.

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• Take this medicine with or without food. Take with food if it causes an upset stomach.

• Drink plenty of noncaffeine-containing liquid unless told to drink less liquid by healthcare provider.

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• Take a missed dose as soon as possible.

• If it is almost time for the next dose, skip the missed dose and return to your regular schedule.

• Do not take a double dose or extra doses.

• Many times this medicine is taken on an as needed basis.

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• Change in condition being treated. Is it better, worse, or about the same?

• Dry mouth may cause an increase in cavities. Take good care of your teeth. See a dentist regularly.

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• Store at room temperature.

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Created: 2007-02-19 15:27:00.0

Modified: 2010-03-19 14:18:26.0

Lexi-PALS TM © (1977)-(2007) Lexi-Comp, Inc. All rights reserved.

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• This medicine is used to stop coughing.

• This medicine is used to treat nasal congestion.

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• If you have a life-threatening allergy, wear allergy identification at all times.

• Do not share your medicine with others and do not take anyone else's medicine.

• Keep all medicine out of the reach of children and pets.

• Most medicines can be thrown away in household trash after mixing with coffee grounds or kitty litter and sealing in a plastic bag.

• Keep a list of all your medicines (prescription, natural products, supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, nurse practitioner, pharmacist, physician assistant).

• Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or in Canada to Health Canada's Canada Vigilance Program at 1-866-234-2345.

• Talk with healthcare provider before starting any new medicine, including over-the-counter, natural products, or vitamins.

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What are the precautions when taking this medicine?

• If you are 65 or older, use this medicine with caution. You could have more side effects.

• If you have diabetes, talk with healthcare provider.

• If you have an enlarged prostate, talk with healthcare provider.

• If you have glaucoma, talk with healthcare provider.

• If you have heart disease, talk with healthcare provider.

• If you have high blood pressure, talk with healthcare provider.

• Check medicines with healthcare provider. This medicine may not mix well with other medicines.

• You may not be alert. Avoid driving, doing other tasks or activities until you see how this medicine affects you.

• Avoid alcohol (includes wine, beer, and liquor) or other medicines and natural products that slow your actions and reactions.

• Limit caffeine (for example, tea, coffee, cola) and chocolate intake. Use with this medicine may cause nervousness, shakiness, and fast heartbeat.

• Tell healthcare provider if you are pregnant or plan on getting pregnant.

What are some possible side effects of this medicine?

• Feeling lightheaded, sleepy, having blurred vision, or a change in thinking clearly. Avoid driving, doing other tasks or activities that require you to be alert or have clear vision until you see how this medicine affects you.

• Feeling dizzy. Rise slowly over several minutes from sitting or lying position. Be careful climbing.

• Nervous and excitable.

• Nausea or vomiting. Small frequent meals, frequent mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help.

• Dry mouth. Frequent mouth care, sucking hard, sugar-free candy, or chewing sugar-free gum may help.

• Inability to sleep.

Reasons to call healthcare provider immediately

• If you suspect an overdose, call your local poison control center or emergency department immediately.

• Signs of a life-threatening reaction. These include wheezing; chest tightness; fever; itching; bad cough; blue skin color; fits; or swelling of face, lips, tongue, or throat.

• Chest pain or pressure, fast heartbeat, or passing out.

• Severe headache.

• Persistent cough.

• Feeling extremely tired or weak.

• Any rash.

• No improvement in condition or feeling worse.

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