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Carbetapentane and guaifenesin

Name of generic: Carbetapentane and guaifenesin ( “kar-BETa-PEN-tane” and “gwye [gwye-FEN-e-sin, and kaur-B
Brand names: Allfen CX, Allfen C, Xpect-AT, BetaVent, Oratuss.
Dosage format: oral tablet, extended release (60 mg–1000 mg)
Classification of drugs: upper respiratory combinations

What are Carbetapentane and guaifenesin?

Carbetapentane is an effective cough suppressant. It alters the brain's signals, which trigger the cough reflex. Guaifenesin is an expectorant. It aids in removing mucus and congestion in your throat, chest, and throat, making it easier to breathe through your mouth.

Carbetapentane and guaifenesin are combination medicines that are used to treat a stuffy nose, cough, and chest congestion that are caused by a commonly occurring cold or flu. Guaifenesin and carbetapentane will not treat coughs that are due to cigarettes, asthma, or the condition known as emphysema. Carbetapentane and guaifenesin could be used for other purposes that are not mentioned in this guide.

Side effects of Carbetapentane and guaifenesin

See a doctor immediately. If you experience any of the following symptoms as warning signs of an allergic reaction: hives; trouble breathing; or swelling of your lips, face, and tongue.

This medication could cause severe adverse effects. Take this medication off and consult your physician immediately if you experience:

  • Hallucinations, confusion, anxiety, feeling nervous or restless;
  • Shaking or
  • Extreme vulnerability.

Common adverse effects of carbetapentane and guaifenesin could be:

  • Drowsiness,
  • Dizziness;
  • Headache;
  • Sleep problems (insomnia); or

This isn't a complete list of all the side effects. Other effects may also be present. Contact your doctor to seek medical advice on the effects. You can report adverse reactions to the FDA at 1-800-FDA-1088.

Related drugs


Do not take carbetapentane as well as guaifenesin in the event that you've used an MAO inhibitor within the last 14 days, including isocarboxazid, linezolid blue injection, phenelzine, rasagiline, selegiline, or tranylcypromine.

Before you take this drug

Do not take carbetapentane as well as guaifenesin if you've taken an MAO inhibitor within the last 14 days. A risky drug interaction may occur. MAO inhibitors include isocarboxazid, rasagiline, linezolid, phenelzine, selegiline, tranylcypromine, and selegiline. It is not recommended to use this medication if you have an allergy to guaifenesin or carbetapentane. To ensure that carbetapentane and guaifenesin are safe for you, consult your physician. If you are suffering from:

  • Asthma, emphysema, or other breathing issues;
  • The heart condition, also known as hypertension;
  • Glaucoma;
  • Diabetes;
  • An enlarged prostate, urinary problems, or
  • Thyroid that is overactive.

It is unclear if carbetapentane or guaifenesin can harm a baby who is not yet born. Inform your doctor if you are expecting. Carbetapentane and guaifenesin could be found in the milk of a nursing baby and could harm the baby who is nursing. Consult your physician if you are breastfeeding your baby.

Artificially sweetened, sweetened, or flavored liquid cough and cold medicine can contain phenylalanine. If you suffer from the condition known as phenylketonuria (PKU), look over the label of your medication to determine whether it contains the chemical phenylalanine.

How to take Carbetapentane and guaifenesin?

Follow the directions on the label or as directed by your physician. Avoid using in greater quantities, in smaller quantities, or for longer periods than recommended. The medicine for a cold or cough is typically taken for a short period of time until the symptoms subside.

Don't give this medication to children younger than four years old. Always consult with a physician prior to giving a cold or cough medicine to children. Death can occur due to the improper use of cough or cold medications in very young children. Drink guaifenesin and carbetapentane by drinking large glasses of water. Drink more fluids to alleviate congestion and lubricate your throat while taking this medicine. Carbetapentane and guaifenesin are both taken with food if they cause stomach upset. Don't crush, chew, or break an extended-release tablet. Suck it up whole.

Consult your physician if symptoms don't improve after seven days of medication or if you suffer from a fever, headache, cough, or the appearance of a skin eruption. This medication can produce unusual results when tested with certain tests. Inform any physician who treats you that you've had an anti-cough medicine in the past couple of days. If you are in need of surgery, be sure to inform the surgeon in advance if you've taken an anti-cough medicine in the last few days. Keep at room temperature, away from heat, moisture, and light. Make sure that you do not allow liquid medicines to become frozen.

What happens If I miss a dose?

Because cold or cough medication is administered when it is needed, it is possible that you are not on a regular dosing regimen. If you're following a schedule, you should take the dose you missed as soon as you can remember. Do not take any missed doses if you are close to the time of the next dose scheduled. Do not take extra medicine to replace the missed dose.

What happens If I overdose?

For medical emergencies, seek emergency medical attention or contact the Poison Help line toll-free at 1-800-222-1222.

What should be avoided?

The medication can cause blurred vision and could cause a decrease in your ability to think or react. Be aware of this if you are driving or engaging in any activity that requires the driver to remain conscious and capable of seeing clearly. Drinking alcohol can cause drowsiness due to carbetapentane and guaifenesin.

Consult a physician or pharmacist before taking any other cough, cold, or allergy medication. Cough suppressants as well as expectorants are included in a number of combination medications. When you combine certain medications, it could result in you taking too much of a particular medication. Examine the label to find out whether the medicine is an expectorant or a cough suppressant.

Interaction with other drugs

If you are taking carbetapentane or guaifenesin with other medications that cause you to feel sleepy or slow your breathing, this could cause more harm. Consult your physician before taking guaifenesin and carbetapentane in combination with a sleeping medication, narcotic pain medication, muscle relaxer, or any other medication to treat depression, anxiety, depression, or seizures.

Other medications may be incompatible with carbetapentane or guaifenesin, which include prescription and over-the-counter medications, vitamins, and herbal products. Be sure to inform your health professionals about the medicines you take currently and all medicines that you decide to stop or modify your use of.