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Fenesin IR

Generic name: guaifenesin [gwye-FEN-e-sin]
The brand names are: Allfen, Bidex-400, Diabetic Tussin Chest Congestion, Fenesin IR, Geri-Tussin Expectorant,… display the 25 names
Drug class: Expectorants

What is Fenesin IR?

Fenesin injections are used to treat chest congestion that is caused by the commonly occurring flu, as well as persistent bronchitis. Fenesin helps to ease congestion in your throat, chest, and throat, making it easier for you to cough out of your mouth.

There are numerous varieties and brands of guaifenesin available. There aren't all the brands mentioned in this leaflet. Fenesin can also be used for other purposes not mentioned in this medication guide.

Side effects of Fenesin IR

Contact a medical professional immediately. Get medical attention immediately if you notice symptoms or warning signs of an allergic response, like hives, trouble breathing, and swelling of your lips, face, and tongue.

Common negative side effects of fenesin ir can include:

  • Nausea; or
  • Vomiting.

This isn't a complete list of possible side effects, and other side effects could occur. Consult your physician to seek medical advice on the effects. You can report any adverse reactions to the FDA at 1-800-FDA-1088.


Talk to your doctor or pharmacist prior to taking Fenesin IR if you suffer from health issues, are taking other medications, or are nursing or pregnant.

Prior to use this drug

You shouldn't make use of Fenesin IR if you are sensitive to it. Consult a pharmacist or doctor to determine if it is safe to take this medication when you suffer from other medical issues. Talk to your doctor before using this medicine if you are expecting It is not recommended to breastfeed during treatment with Fenesin IR.

How to take Fenesin Ir?

Follow the directions on the label or as recommended by your physician. Cough or cough medication is meant for short-term use only until symptoms improve. Follow the instructions on the medication label regarding the administration of cold or cough medicine to children. Don't use the medicine solely to induce sleepiness in a child. Death can occur due to the misapplication of cough or cold medicine to children who are very young. Make sure to measure the liquid medicine with care. Make use of the dosing syringe supplied or use a dose-measuring device (not an ordinary spoon). To make use of Fenesin IR granules, pour the entire container onto your tongue and then swallow without chewing.

Contact your physician if your symptoms don't improve after 7 days or if you experience an itch, high fever, rash, or headache. Fenesin in the IR could affect the results of some medical tests. Inform any physician who treats you to inform them that you're taking Fenesin IR.  Storage is at room temperature, far from heat and moisture. Don't freeze.

What happens if I miss a dose?

Because cough or cold medicine is taken when required, you might not be following a dose schedule. Don't miss any doses in the event that it's nearing time to get the next dose. Do not take two doses at once.

What happens if I overdose?

For medical emergencies, seek emergency care immediately or reach out for assistance at the Poison Help Line: 1-800-222-1222.

What should be avoided?

Consult a physician or pharmacist before taking any other cold or cough medicines that may have similar components.

Avoid driving or engaging in hazardous activities until you understand the extent to which Fenesin IR affects you. Your reaction could be impaired.

Interaction with other drugs

Beware of using this medicine in conjunction with other medications that can create the feeling of drowsiness or slow breathing (such as opioid medication, a muscle relaxer, or medicines to treat anxiety as well as seizures). Consult a physician or pharmacist prior to using any other medication, which includes prescription or over-the-counter medications, vitamins, and herbal supplements. Some interactions with drugs are covered in this drug guide.