- Mucinex Fast-Max Severe Congestion & Cough
- What is Mucinex Fast-Max Severe Congestion & Cough?
- Important Information
- Before taking this medicine
- How should I take Mucinex Fast-Max Severe Congestion & Cough?
- What happens if I miss a dose?
- What happens if I overdose?
- What should I avoid while taking Mucinex Fast-Max Severe Congestion & Cough?
- Mucinex Fast-Max Severe Congestion & Cough side effects
- What other drugs will affect Mucinex Fast-Max Severe Congestion & Cough?
- Further information
- More about Mucinex Fast-Max Severe Congestion & Cough (dextromethorphan / guaifenesin / phenylephrine)
Mucinex Fast-Max Severe Congestion & Cough
Generic Name: dextromethorphan, guaifenesin, and phenylephrine (dex troe meth OR fan, gwye FEN e sin, fen il EFF rin)
Brand Name: Broncotron-D, Duravent DM, Giltuss, Mucinex Fast-Max Severe Congestion & Cough, Phlemex Forte, Robitussin Children’s Cough & Cold CF, Robitussin Multi-Symptom Cold, Tusicof, Tussin CF, Vanacof DM, Z-tuss DM
Medically reviewed by Drugs.com on Jun 28, 2019 – Written by Cerner Multum
- Side Effects
What is Mucinex Fast-Max Severe Congestion & Cough?
Dextromethorphan is a cough suppressant that affects signals in the brain that trigger cough reflex. Guaifenesin is an expectorant that loosens congestion in your chest and throat. Phenylephrine is a decongestant that shrinks blood vessels in the nasal passages.
Mucinex Fast-Max Severe Congestion & Cough is a combination medicine used to treat cough, stuffy nose, and chest congestion caused by allergies, the common cold, or the flu.
Mucinex Fast-Max Severe Congestion & Cough will not treat a cough that is caused by smoking, asthma, or emphysema.
There are many brands and forms of this medicine available. Not all brands are listed on this leaflet.
Mucinex Fast-Max Severe Congestion & Cough may also be used for purposes not listed in this medication guide.
Do not use this medicine if you have taken an MAO inhibitor in the past 14 days, such as isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.
Before taking this medicine
You should not use this medicine if you are allergic to dextromethorphan, guaifenesin, or phenylephrine.
Do not use this medicine if you have taken an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, phenelzine, rasagiline, selegiline, and tranylcypromine.
Ask a doctor or pharmacist if this medicine is safe to use if you have:
heart disease, high blood pressure;
a thyroid disorder;
epilepsy or other seizure disorder;
pheochromocytoma (an adrenal gland tumor); or
cough with mucus, or cough caused by emphysema or chronic bronchitis.
This medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).
Ask a doctor before using this medicine if you are pregnant or breast-feeding.
How should I take Mucinex Fast-Max Severe Congestion & Cough?
Use exactly as directed on the label, or as prescribed by your doctor. Cold or cough medicine is only for short-term use until your symptoms clear up.
Always follow directions on the medicine label about giving cough or cold medicine to a child. Do not use the medicine only to make a child sleepy. Death can occur from the misuse of cough or cold medicines in very young children.
Do not crush, chew, or break an extended-release tablet. Swallow it whole.
Measure liquid medicine carefully. Use the dosing syringe provided, or use a medicine dose-measuring device (not a kitchen spoon).
Drink extra fluids to help loosen the congestion and lubricate your throat while you are taking this medication.
Call your doctor if your symptoms do not improve after 7 days, or if you have a fever, rash, or headaches.
If you need surgery or medical tests, tell the surgeon or doctor ahead of time if you have taken this medicine within the past few days.
Store at room temperature away from moisture and heat. Do not allow liquid medicine to freeze.
What happens if I miss a dose?
Since cough or cold medicine is used when needed, you may not be on a dosing schedule. Skip any missed dose if it’s almost time for your next dose. Do not use two doses at one time.
What happens if I overdose?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.
What should I avoid while taking Mucinex Fast-Max Severe Congestion & Cough?
Avoid driving or hazardous activity until you know how this medicine will affect you. Your reactions could be impaired.
Drinking alcohol can increase certain side effects of this medicine.
Ask a doctor or pharmacist before using other cough or cold medicines that may contain similar ingredients.
Mucinex Fast-Max Severe Congestion & Cough side effects
Get emergency medical help if you have signs of an allergic reaction: hives; difficult breathing; swelling of your face, lips, tongue, or throat.
Stop using this medicine and call your doctor at once if you have:
little or no urination;
fast or slow heartbeats;
confusion, severe dizziness, feeling unsteady;
severe nausea or vomiting;
severe headache, blurred vision, pounding in your neck or ears;
slow breathing; or
unusual changes in mood or behavior.
Common side effects may include:
sleep problems (insomnia); or
feeling nervous, restless, or irritable.
This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
What other drugs will affect Mucinex Fast-Max Severe Congestion & Cough?
Avoid using Mucinex Fast-Max Severe Congestion & Cough with other drugs that cause drowsiness or slow your breathing (such as opioid medicine, a muscle relaxer, or medicine for anxiety or seizures). Ask a doctor or pharmacist before using any other medication, including prescription and over-the-counter medicines, vitamins, and herbal products. Not all possible drug interactions are listed in this medication guide.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
Copyright 1996-2018 Cerner Multum, Inc. Version: 3.02.
More about Mucinex Fast-Max Severe Congestion & Cough (dextromethorphan / guaifenesin / phenylephrine)
- Side Effects
- During Pregnancy
- Dosage Information
- Imprints, Shape & Color Data
- Drug Interactions
- Pricing & Coupons
- En Español
- 11 Reviews
- Drug class: upper respiratory combinations
- FDA Alerts (4)
Other brands: Giltuss, Robitussin Children’s Cough & Cold CF, Deconex DMX, Robitussin Multi-Symptom Cold CF, … +9 more
- … +14 more
Related treatment guides
- Cough and Nasal Congestion
This combination medication is used to temporarily treat cough, chest congestion, fever, body aches, and stuffy nose symptoms caused by the common cold, flu, or other breathing illnesses (e.g., sinusitis, bronchitis). Guaifenesin is an expectorant that helps to thin and loosen mucus in the lungs, making it easier to cough up the mucus. Dextromethorphan is a cough suppressant that affects a certain part of the brain (cough center), reducing the urge to cough. Decongestants help to relieve stuffy nose symptoms. This product also contains acetaminophen (APAP), a non-aspirin pain reliever and fever reducer.This medication is not usually used for ongoing coughs from smoking, asthma, other long-term breathing problems (e.g., emphysema), or coughs with a lot of mucus unless directed by your doctor.Cough-and-cold products have not been shown to be safe or effective in children younger than 6 years. Therefore, do not use this product to treat cold symptoms in children younger than 6 years unless specifically directed by the doctor. Some products (such as long-acting tablets/capsules) are not recommended for use in children younger than 12 years. Ask your doctor or pharmacist for more details about using your product safely.These products do not cure or shorten the length of the common cold and may cause serious side effects. To decrease the risk for serious side effects, carefully follow all dosage directions. Do not use this product to make a child sleepy. Do not give other cough-and-cold medication that might contain the same or similar ingredients
See also Drug Interactions section.
Ask the doctor or pharmacist about other ways to relieve cough and cold symptoms (such as drinking enough fluids, using a humidifier or saline nose drops/spray).
how to use
See also Warning section.
If you are using the over-the-counter product, read and follow all directions on the product package before taking this medication.Take this medication by mouth with or without food, usually every 4 to 6 hours as needed, or as directed by your doctor. Drink plenty of fluids when you use this medication unless otherwise directed by your doctor. The fluid will help loosen the mucus in your lungs.If you are using a liquid form, carefully measure your dose using a medication-measuring device or spoon. Do not use a household spoon because you may not get the correct dose. For some liquid products, you may need to shake the bottle well before each dose. Check the directions on the product package.The dosage is based on your age, medical condition, and response to treatment. Do not increase your dose or take this medication more often than directed without your doctor’s approval. Improper use of this medication (abuse) may result in serious harm (e.g., brain damage, seizure, death).Tell your doctor if your condition persists for more than 5 to 7 days, if it worsens, or if it occurs with rash, persistent headache, or fever lasting more than 3 days. These may be symptoms of a serious medical problem and should be checked by a doctor.
See also Warning section.
Dizziness, drowsiness, headache, nausea, nervousness, or trouble sleeping may occur. If any of these effects persist or worsen, contact your doctor or pharmacist promptly.If your doctor has prescribed this medication, remember that he or she has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Tell your doctor if any of these unlikely but serious side effects occur: mental/mood changes (e.g., confusion, hallucinations), shaking (tremors), weakness, problems urinating.Tell your doctor if any of these rare but very serious side effects occur: fast/slow/irregular heartbeat.A very serious allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of a serious allergic reaction may include: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.In Canada – Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
See also Warning section.
Before taking this medication, tell your doctor or pharmacist if you are allergic to any of its ingredients; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: breathing problems (e.g., asthma, emphysema), diabetes, a certain eye problem (glaucoma), heart problems, high blood pressure, kidney problems, liver disease, overactive thyroid (hyperthyroidism), trouble urinating (e.g., due to enlarged prostate), use/abuse of alcohol.This drug may make you dizzy or drowsy. Alcohol or marijuana (cannabis) can make you more dizzy or drowsy. Do not drive, use machinery, or do anything that needs alertness until you can do it safely. Avoid alcoholic beverages. Talk to your doctor if you are using marijuana (cannabis).Liquid forms of this product may contain sugar, alcohol, or aspartame. Caution is advised if you have diabetes, alcohol dependence, liver disease, phenylketonuria (PKU), or any other condition that requires you to limit/avoid these substances in your diet. Ask your doctor or pharmacist about using this product safely.Before having surgery, tell your doctor or dentist that you are taking this medication.Older adults may be more sensitive to the side effects of this drug, especially fast/irregular heartbeat, dizziness, problems urinating, trouble sleeping, or confusion.During pregnancy, this medication should be used only if clearly needed. Discuss the risks and benefits with your doctor.This medication may pass into breast milk. Consult your doctor before breast-feeding.
See also Warning section.
If your doctor has directed you to use this medication, your doctor or pharmacist may already be aware of any possible drug interactions and may be monitoring you for them. Do not start, stop, or change the dosage of any medicine before checking with your doctor or pharmacist first.Taking certain MAO inhibitors with this medication may cause a serious (possibly fatal) drug interaction. Avoid taking isocarboxazid, methylene blue, moclobemide, phenelzine, procarbazine, rasagiline, safinamide, selegiline, or tranylcypromine during treatment with this medication. Most MAO inhibitors should also not be taken for two weeks before treatment with this medication. Ask your doctor when to start or stop taking this medication.Before using this medication, tell your doctor or pharmacist of all prescription and nonprescription/herbal products you may use, especially of: beta blockers (e.g., metoprolol, atenolol), guanethidine, ketoconazole, methyldopa, tricyclic antidepressants (e.g., amitriptyline, desipramine).The ingredients in this product are available in many prescription and nonprescription products. Check the labels on all your medications carefully to make sure you are not taking more than one product with the same ingredient(s). Consult your pharmacist if you are unsure of the ingredients in any of your medications.Tell your doctor or pharmacist if you are taking other products that cause drowsiness such as opioid pain or cough relievers (such as codeine, hydrocodone), alcohol, marijuana (cannabis), drugs for sleep or anxiety (such as alprazolam, lorazepam, zolpidem), muscle relaxants (such as carisoprodol, cyclobenzaprine), or antihistamines (such as cetirizine, diphenhydramine).Check the labels on all your medicines (such as allergy or cough-and-cold products) because they may contain ingredients that cause drowsiness. Ask your pharmacist about using those products safely.Some products have ingredients that could raise your heart rate or blood pressure. Tell your pharmacist what products you are using, and ask how to use them safely (especially cough-and-cold products or diet aids).This medication may interfere with certain urine laboratory tests (e.g., 5-HIAA levels, VMA levels), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.This document does not contain all possible interactions. Therefore, before using this product, tell your doctor or pharmacist of all the products you use. Keep a list of all your medications with you, and share the list with your doctor and pharmacist.
If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: nausea, vomiting, loss of appetite, sweating, stomach/abdominal pain, extreme tiredness, yellowing eyes/skin, dark urine, agitation, confusion, hallucinations, seizures.
If your doctor has prescribed this medication for you, do not share it with others.Keep all regular medical and laboratory appointments.