Allfen Dm Oral Tablet 20-400Mg Drug Medication Dosage Information
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AllFen DM: Oral tablet (20-400mg)

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What is this Medicine?

DEXTROMETHORPHAN; GUAIFENESIN (dex troe meth OR fan; gwye FEN e sin) is a combination of a cough suppressant and expectorant. It is used for the temporary relief of coughs. This medicine is also used to loosen mucus.

In-Depth Information

Allfen DM 400mg-20mg Tablet

NDC: 586050401
  • Over the Counter
    (Prescription Not Required)
  • Not a Controlled Drug
    (CSA Schedule)




FDA approved for the following conditions:
Cough, Common Cold, Bronchitis

Storage Information
Store at room temperature (between 59 to 86 degrees F)
Protect from light
Protect from moisture
Allfen DM 400mg-20mg Tablet
Daily Life Interactions for Allfen DM 400mg-20mg Tablet

Elements of your daily lifestyle may have an effect on the medications you are taking. Drug interactions can result in unwanted side effects, reduce the effectiveness of your medicine or possibly increase the action of a particular medicine.

Minor Lifestyle Interaction
Grapefruit juice and Allfen DM 400mg-20mg Tablet(Dextromethorphan Hydrobromide)
Grapefruit juice and Dextromethorphan(Dextromethorphan Hydrobromide)
Grapefruit juice may increase the actions of Dextromethorphan. Side effects from the Dextromethorphan may get worse if you drink grapefruit juice. It may be best to avoid drinking grapefruit juice while you are taking Dextromethorphan.
Pregnancy & Lactation Information
FIRST Trimester

Class C - Animal studies have shown an adverse effect and there are no adequate and well-controlled studies in pregnant women. OR No animal studies have been conducted and there are no adequate and well-controlled studies in pregnant women.

SECOND Trimester

Class C - Animal studies have shown an adverse effect and there are no adequate and well-controlled studies in pregnant women. OR No animal studies have been conducted and there are no adequate and well-controlled studies in pregnant women.

THIRD Trimester

Class C - Animal studies have shown an adverse effect and there are no adequate and well-controlled studies in pregnant women. OR No animal studies have been conducted and there are no adequate and well-controlled studies in pregnant women.


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