Generic Name: Guaifenesin Extended-Release Tablets (gwye FEN eh sin)
Brand Name: Mucinex
Medically reviewed by Drugs.com. Last updated on Aug 2, 2019.
Uses of Mucinex:
- It is used to thin mucus so it can be taken from the body by coughing.
What do I need to tell my doctor BEFORE I take Mucinex?
- If you have an allergy to guaifenesin or any other part of Mucinex (guaifenesin extended-release tablets).
- If you are allergic to any drugs like this one, any other drugs, foods, or other substances. Tell your doctor about the allergy and what signs you had, like rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, or throat; or any other signs.
- If you have a cough with a lot of mucus.
- If you have a long-term cough caused by smoking or being around smoke, or lung problems like asthma or emphysema.
This is not a list of all drugs or health problems that interact with Mucinex (guaifenesin extended-release tablets).
Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take Mucinex (guaifenesin extended-release tablets) with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.
What are some things I need to know or do while I take Mucinex?
- Tell all of your health care providers that you take Mucinex (guaifenesin extended-release tablets). This includes your doctors, nurses, pharmacists, and dentists.
- Different brands of Mucinex (guaifenesin extended-release tablets) may be for use in different ages of children. Talk with the doctor before giving Mucinex (guaifenesin extended-release tablets) to a child.
- Tell your doctor if you are pregnant or plan on getting pregnant. You will need to talk about the benefits and risks of using Mucinex (guaifenesin extended-release tablets) while you are pregnant.
- Tell your doctor if you are breast-feeding. You will need to talk about any risks to your baby.
How is this medicine (Mucinex) best taken?
Use Mucinex (guaifenesin extended-release tablets) 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 noncaffeine liquids unless told to drink less liquid by your doctor.
- Swallow whole. Do not chew, break, or crush.
What do I do if I miss a dose?
- If you take Mucinex (guaifenesin extended-release tablets) on a regular basis, take a missed dose as soon as you think about it.
- If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
- Do not take 2 doses at the same time or extra doses.
- Many times Mucinex (guaifenesin extended-release tablets) is taken on an as needed basis. Do not take more often than told by the doctor.
What are some side effects that I need to call my doctor about right away?
WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. 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, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
- Cough that does not go away.
What are some other side effects of Mucinex?
All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if you have any side effects that bother you or do not go away.
These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.
You may report side effects to the FDA at 1-800-FDA-1088. You may also report side effects at http://www.fda.gov/medwatch.
If OVERDOSE is suspected:
How do I store and/or throw out Mucinex?
- Store at room temperature.
- Store in a dry place. Do not store in a bathroom.
- Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
- Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.
Consumer information use
- If your symptoms or health problems do not get better or if they become worse, call your doctor.
- Do not share your drugs with others and do not take anyone else's drugs.
- Keep a list of all your drugs (prescription, natural products, vitamins, OTC) with you. Give this list to your doctor.
- Talk with the doctor before starting any new drug, including prescription or OTC, natural products, or vitamins.
- Some drugs may have another patient information leaflet. Check with your pharmacist. If you have any questions about Mucinex (guaifenesin extended-release tablets), please talk with your doctor, nurse, pharmacist, or other health care provider.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
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More about Mucinex (guaifenesin)
- Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Patient Tips
- Drug Images
- Compare Alternatives
- Support Group
- Pricing & Coupons
- En Español
- 75 Reviews
- Drug class: expectorants
- FDA Alerts (4)