Allfen

Name: Allfen

Allfen Overview

Allfen is a brand name medication included in a group of medications called Expectorants. For more information about Allfen see its generic Guaifenesin

Allfen Drug Class

Allfen is part of the drug class:

  • Expectorants

Allfen Side Effects

Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common or rare
  • Diarrhea
  • dizziness
  • headache
  • hives
  • nausea or vomiting
  • skin rash
  • stomach pain

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.

Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.

What happens if I miss a dose?

Since cough medicine is taken when needed, you may not be on a dosing schedule. If you are taking the medication regularly, take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

For the Consumer

Applies to guaifenesin: oral capsule, oral capsule extended release, oral elixir, oral liquid, oral packet, oral solution, oral syrup, oral tablet, oral tablet extended release

Along with its needed effects, guaifenesin may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Some side effects of guaifenesin may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

Less common or rare
  • Diarrhea
  • dizziness
  • headache
  • hives
  • nausea or vomiting
  • skin rash
  • stomach pain

Dialysis

Data not available

Upsides

  • Guaifenesin is used as an expectorant (promotes mucus secretion in the airways).
  • Use to relieve chest congestion occurring as a result of colds, flu, or allergies.
  • Makes coughs more productive. Guaifenesin will not stop coughing; however, coughing is important as it is the body's way to remove excess mucus.
  • Guaifenesin is generally well tolerated.

Bottom Line

Guaifenesin is an expectorant that helps thin and remove mucus from the airways. It is generally well tolerated.

Guaifenesin Identification

Substance Name

Guaifenesin

CAS Registry Number

93-14-1

Drug Class

Expectorants

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