Generic Name: dextromethorphan (DEX troe me THOR fan)
Brand Name: Babee Cof, Benylin DM Pediatric, Buckleys Mixture, Creomulsion, DayQuil Cough, Delsym, Elixsure Cough, Father John's Medicine, Robafen Cough Liquidgels, Robitussin Honey Cough, Scot-Tussin Diabetic, Silphen DM, St. Joseph Cough Suppressant, Sucrets DM Cough, Triaminic Long Acting Cough
Medically reviewed on February 9, 2018
What is DayQuil Cough?
DayQuil Cough is a cough suppressant. It affects the signals in the brain that trigger cough reflex.
DayQuil Cough is used to treat a cough.
DayQuil Cough may also be used for purposes not listed in this medication guide.
Always ask a doctor before giving a cough or cold medicine to a child. Death can occur from the misuse of cough and cold medicines in very young children.
Before taking this medicine
Do not use DayQuil Cough if you have used an MAO inhibitor in the past 14 days. A dangerous drug interaction could occur. MAO inhibitors include isocarboxazid, linezolid, methylene blue injection, phenelzine, rasagiline, selegiline, tranylcypromine, and others.
Ask a doctor or pharmacist about using this medicine if you have emphysema or chronic bronchitis.
It is not known whether DayQuil Cough will harm an unborn baby. Do not use this medicine without a doctor's advice if you are pregnant.
This medication may pass into breast milk and could harm a nursing baby. Do not use this medicine without a doctor's advice if you are breast-feeding a baby.
Artificially sweetened liquid medicine may contain phenylalanine. Check the medication label if you have phenylketonuria (PKU).
How should I take DayQuil Cough?
There are many brands and forms of dextromethorphan available. Not all brands are listed on this leaflet.
Use this medication exactly as directed on the label, or as it has been prescribed by your doctor. Do not use the medication in larger amounts, or use it for longer than recommended. Cough medicine is usually taken only for a short time until your symptoms clear up.
Do not give this medicine to a child younger than 4 years old. Always ask a doctor before giving a cough or cold medicine to a child of any age. Death can occur from the misuse of cough and cold medicines in very young children.
Measure liquid medicine with the dosing syringe provided, or with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.
Drink extra fluids to help loosen the congestion and lubricate your throat while you are taking this medication.
If you need to have any type of surgery, tell the surgeon ahead of time if you have taken a cough medicine within the past few days.
Store DayQuil Cough at room temperature, away from heat, light, and moisture.
What happens if I miss a dose?
Since cough medicine is usually taken only as needed, you may not be on a dosing schedule. If you are taking the medication regularly, take the missed dose as soon as you remember. If it is almost time for your next dose, skip the missed dose and take the medicine at your next regularly scheduled time. Do not take extra medicine to make up the missed dose.
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 DayQuil Cough?
Avoid drinking alcohol. It can increase some of the side effects of dextromethorphan.
This medication can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.
Avoid taking diet pills, caffeine pills, or other stimulants (such as ADHD medications) without your doctor's advice. Taking a stimulant together with cough medicine can increase your risk of unpleasant side effects.
Ask a doctor or pharmacist before using any cold, allergy, or pain medication. Many medicines available over the counter contain DayQuil Cough. Taking certain products together can cause you to get too much of this type of medication. Check the label to see if a medicine contains a cough suppressant.
DayQuil Cough side effects
Get emergency medical help if you have signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop using DayQuil Cough and call your doctor at once if you have:
confusion, hallucinations; or
slow, shallow breathing.
Common side effects may include stomach upset.
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.
See also: Side effects (in more detail)
What other drugs will affect DayQuil Cough?
Ask a doctor or pharmacist before using this medicine if you are also using any other drugs, including prescription and over-the-counter medicines, vitamins, and herbal products. Some medicines can cause unwanted or dangerous effects when used together. Not all possible interactions are listed in this medication guide.
Taking this medicine with other drugs that make you sleepy or slow your breathing can worsen these effects. Ask your doctor before taking DayQuil Cough with a sleeping pill, narcotic pain medicine, muscle relaxer, or medicine for anxiety, depression, or seizures.
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: 7.01.
More about Vicks Dayquil Cough (dextromethorphan)
- Vicks Dayquil Cough Side Effects
- During Pregnancy or Breastfeeding
- Dosage Information
- Drug Interactions
- Support Group
- En Español
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- Drug class: antitussives