The Web Health



Generic Name: Guaifenesin (pronounced gwye FEN-esin) and pseudoephedrine (pronounced soo-doe ee-FED).

Brand names include Ambifed-G, Entex T, Maxifed, Mucinex, Mucinex, Mucinex, Mucinex, Mucinex, Mucinex, Mucinexx, Mucinex, Mucinex, Mucinex,
Drug Class: Upper Respiratory Combinations


What is Maxifed?

This leaflet does not list all the brands or forms of pseudoephedrine and guaifenesin .Guaifenesin acts as an expectorant. Guaifenesin helps to loosen up congestion in the chest and throat making it easier for you to Cough through your mouth. The decongestant pseudoephedrine shrinks the blood vessels within the nasal passages. Dilated blood vessel can cause congestion in the nasal passages. Maxifed is used to treat nasal congestion and sinus congestion and reduce chest congestion due to the common flu or cold. This medication guide does not list all possible uses of Maxifed.

Side effects of Maxifed

If you experience any of the following symptoms of an allergic reaction, seek immediate medical attention: hives, difficulty breathing, swelling of the face, lips or throat.

Maxifed can cause serious side-effects. If you experience:

  • fast, pounding, or uneven heartbeat; or
  • Severe anxiety, or nervousness.

Some of the most common side effects associated with Maxifed include:

  • dry mouth nose or throat
  • nausea, loss of appetite;
  • Feeling excited or restless, especially in children
  • sleep problems (insomnia); or
  • headache, dizziness.

There may be other side effects. For medical advice on side effects, call your doctor. FDA can be contacted at 1-800-FDA-1088 to report side effects.


This medication should not be given to children younger than four years of age. Ask a doctor first before giving cough and cold medications to children. Children as young as 4 years old can die from misuse of cough medicines.

Before you take this drug

If you have an allergy to Maxifed, then it is best not to use it.

Maxifed should not be used if MAO inhibitors have been taken within the last 14 days. A harmful drug interactions may occur. MAO inhibitors are isocarboxazid (linezolid), phenelzine (rasagiline), selegiline (tranylcypromine), and rasagiline.

If you suffer from:

  • high Blood Pressure; Heart Disease; Coronary Artery Disease.
  • diabetes;
  • Circulation problems
  • glaucoma;
  • Overactive thyroid gland;
  • An enlarged prostate, or problems with urination.

This medication is not known to be harmful to an unborn child. If you are pregnant, do not take Maxifed without consulting your doctor.

Guaifenesin, pseudoephedrine and other drugs can pass through breast milk to harm nursing babies. Decongestants can also reduce breast milk production. Do NOT use this medication without consulting a doctor if you are breastfeeding a child. Phenylalanine can be found in artificially sweetened liquid medicines. If you have Phenylketonuria, check the label of your medication.

How to take Maxified?

Do not exceed the recommended dosage or duration. Use the recommended dose and do not exceed it. Cold or cough medicine is typically taken for only a few days until symptoms disappear. This medication should not be given to children younger than four years of age. Never give cough or cold medicines to children younger than 4 years old. Children can die from misuse of cough and cold medications. Ask your pharmacist for a dose measuring device if you don't have one. Do not open, crush, chew or break an extended-release capsule or tablet. Swallow the capsule or tablet whole.

You should call your doctor if symptoms don't improve within 7 days, or you develop a temperature, a headache or cough, or you experience a skin rash. Store at room temperatures away from moisture and warmth.

What happens if I miss the dose?

Maxifed can be taken as needed and there is no set schedule. Take the missed dose immediately if you take the medication regularly. If your next scheduled dosage is near, skip the missed dose. You should not take more medicine to compensate for a missed dose.

What happens if I overdose?

Call 1-800-222-1222 for Poison Help or seek immediate medical attention.

What should be avoided?

This medication can affect your ability to think or react. You should be careful when driving or doing anything else that requires you to be alert.Ask your doctor or pharmacist for advice before taking any other allergy or cough medication. Many combination medications contain Maxifed. You can get too much medication from certain products when you combine them.

Interaction with other drugs?

Before using this medication, ask your doctor or pharmacist if you also use any other medications, such as vitamins and herbal remedies. When used together, some medicines can have unwanted or harmful effects. This medicine can be worsened by other drugs which make you sleepy. Ask your doctor if you should take Maxifed along with sleeping pills, narcotic pain medicines, muscle relaxers, medicine for anxiety, Depression or Seizures.