Allfen

Generic name: Guaifenesin
Drug class: Expectorants

Usage of Allfen

Allfen is used to reduce chest congestion caused by the common cold, flu, or chronic bronchitis.

Allfen helps loosen congestion in your chest and throat, making it easier to cough out through your mouth.

There are many brands and forms of guaifenesin available. Not all brands are listed on this leaflet.

Allfen may also be used for purposes not listed in this medication guide.

Allfen side effects

Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.

Common side effects of Allfen may include:

nausea; or

vomiting.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Before taking Allfen

You should not use Allfen if you are allergic to it.

Ask a doctor or pharmacist if it is safe for you to use this medicine if you have other medical conditions.

Ask a doctor before using this medicine if you are pregnant.

You should not breast-feed while using Allfen.

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How to use Allfen

Use exactly as directed on the label, or as prescribed by your doctor. Cold or cough medicine is only for short-term use until your symptoms clear up.

Always follow directions on the medicine label about giving cough or cold medicine to a child. Do not use the medicine only to make a child sleepy. Death can occur from the misuse of cough or cold medicines in very young children.

Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).

To use Allfen granules, pour out the entire packet onto your tongue and swallow without chewing.

Call your doctor if your symptoms do not improve after 7 days, or if you have a fever, rash, or headaches.

Allfen can affect the results of certain medical tests. Tell any doctor who treats you that you are using Allfen.

Store at room temperature away from moisture and heat. Do not freeze.

Warnings

Ask a doctor or pharmacist before using Allfen if you have health problems or use other medications, or if you are pregnant or breast-feeding.

What other drugs will affect Allfen

Avoid using this medicine with other drugs that cause drowsiness or slow your breathing (such as opioid medicine, a muscle relaxer, or medicine for anxiety or seizures). Ask a doctor or pharmacist before using any other medication, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed in this medication guide.

Popular FAQ

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