Children's Mucinex


Generic Name: Children's Mucinex Brand Name(s): Generics only. No brands available.


What is Children’s Mucinex® used for?

Children’s Mucinex® is commonly used to thin mucus so it can be taken from the body by coughing.

How should I take Children’s Mucinex®?

Use this medicine as ordered by your doctor. Read all information given to you. Follow all instructions closely.

Take with or without food. Take with food if it causes an upset stomach.

Drink lots of non-caffeine liquids unless told to drink less liquid by your doctor.

Empty the packet onto the tongue and swallow. For best taste, do not chew before swallowing.

How do I store Children’s Mucinex®?

Children’s Mucinex® is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store Children’s Mucinex® in the bathroom or the freezer. There may be different brands of Children’s Mucinex® that may have different storage needs. It is important to always check the product package for instructions on storage, or ask your pharmacist. For safety, you should keep all medicines away from children and pets.

You should not flush Children’s Mucinex® down the toilet or pour them into a drain unless instructed to do so. It is important to properly discard this product when it is expired or no longer needed. Consult your pharmacist for more details about how to safely discard your product.

Precautions & warnings

What should I know before using Children’s Mucinex®?

Before using this drug, tell your doctor if:

  • You are pregnant or breastfeeding. This is because, while you are expecting or feeding a baby, you should only take medicines on the recommendation of a doctor.
  • You are taking any other medicines. This includes any medicines you are taking which are available to buy without a prescription, such as herbal and complementary medicines.
  • You have allergy with any of active or inactive ingredients of Children’s Mucinex® or other medications.
  • You have any other illnesses, disorders, or medical conditions.
  • You have a cough with a lot of mucous.
  • You have a long-term cough caused by smoking or being around smoke, or lung problems like asthma or emphysema.

Tell all of your health care providers that you take this medicine. This includes your doctors, nurses, pharmacists, and dentists.

If you are on a low-sodium or sodium-free diet, talk with your doctor. Some of these products have sodium.

If you have phenylketonuria (PKU), talk with your doctor. Some products have phenylalanine.

Different brands of this medicine (Mucinex Children’s) may be for use in different ages of children. Talk with the doctor before giving this medicine to a child.

Is it safe during pregnancy or breastfeeding?

There are no adequate studies in women for determining risk when using Children’s Mucinex® during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking Children’s Mucinex®. Children’s Mucinex® is pregnancy risk category C, according to the US Food and Drug Administration (FDA).

FDA pregnancy risk category reference below:

  • A=No risk
  • B=No risk in some studies
  • C=There may be some risk
  • D=Positive evidence of risk
  • X=Contraindicated
  • N=Unknown

Side effects

What side effects can occur from Children’s Mucinex®?

Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Cough that does not go away.

Not everyone experiences these side effects. There may be some side effects not listed above. If you have any concerns about a side-effect, please consult your doctor or pharmacist.


What drugs may interact with Children’s Mucinex®?

Children’s Mucinex® may interact with other drugs that you are currently taking, which can change how your drug works or increase your risk for serious side effects. To avoid any potential drug interactions, you should keep a list of all the drugs you are using (including prescription drugs, nonprescription drugs, and herbal products) and share it with your doctor and pharmacist. For your safety, do not start, stop, or change the dosage of any drugs without your doctor’s approval.

Does food or alcohol interact with Children’s Mucinex®?

Children’s Mucinex® may interact with food or alcohol by altering the way the drug works or increase the risk for serious side effects. Please discuss with your doctor or pharmacist any potential food or alcohol interactions before using this drug.

What health conditions may interact with Children’s Mucinex®?

Children’s Mucinex® may interact with your health condition. This interaction may worsen your health condition or alter the way the drug works. It is important to always let your doctor and pharmacist know all the health conditions you currently have.


The information provided is not a substitute for any medical advice. You should ALWAYS consult with your doctor or pharmacist before using Children’s Mucinex®.

What is the dose of Children’s Mucinex® for an adult?

Children 6 years to under 12 years: 5 mL – 10 mL every 4 hours.

What is the dose of Children’s Mucinex® for a child?

Children 6 years to under 12 years: 5 mL – 10 mL every 4 hours.

Children 4 years to under 6 years: 2.5 mL – 5 mL every 4 hours.

Children under 4 years: do not use

How is Children’s Mucinex® available?

Children’s Mucinex® is available in the following dosage forms and strengths:

  • Oral solution: guaifenesin 100mg in 5ml, dextromethorphan hydrobromide 5mg in 5ml

What should I do in case of an emergency or overdose?

In case of an emergency or an overdose, call your local emergency services or go to your nearest emergency room.

What should I do if I miss a dose?

If you miss a dose of Children’s Mucinex®, take it as soon as possible. However, if it is almost time for your next dose, skip the missed dose and take your regular dose as scheduled. Do not take a double dose.

Hello Health Group does not provide medical advice, diagnosis or treatment.

Review Date: October 10, 2017 | Last Modified: October 10, 2017