What is NyQuil® used for?
How should I take NyQuil®?
Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended. This medicine is usually taken only for a short time until your symptoms clear up.
Measure liquid medicine with a special dose-measuring spoon or medicine cup. If you do not have a dose-measuring device, ask your pharmacist for one.
Call your doctor if your symptoms do not improve after 7 days of treatment, or if you have a fever with a headache, cough, or skin rash.
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.
How do I store NyQuil®?
NyQuil® is best stored at room temperature away from direct light and moisture. To prevent drug damage, you should not store NyQuil® in the bathroom or the freezer. There may be different brands of NyQuil® 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 NyQuil® 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 NyQuil®?
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 NyQuil® or other medications.
- You have any other illnesses, disorders, or medical conditions.
Do not use dextromethorphan and doxylamine 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.
Do not give this medication to a child younger than 12 years old. 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.
Is it safe during pregnancy or breastfeeding?
There are no adequate studies in women for determining risk when using NyQuil® during pregnancy or while breastfeeding. Please always consult with your doctor to weigh the potential benefits and risks before taking NyQuil®. NyQuil® is pregnancy risk category N, 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
What side effects can occur from NyQuil®?
Common side effects may include:
- Sleep problems (insomnia)
- Feeling restless or excited (especially in children)
Stop using and call your doctor at once if you have:
- Severe dizziness or anxiety, feeling like you might pass out
- Little or no urinating
- Liver problems such as nausea, upper stomach pain, itching, tired feeling, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes)
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 NyQuil®?
NyQuil® 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 NyQuil®?
NyQuil® 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 NyQuil®?
NyQuil® 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 this NyQuil®.
What is the dose of NyQuil® for an adult?
The recommended dose is 30 mL every 6 hours.
What is the dose of NyQuil® for a child?
Children 12 years and over: The recommended dose is 30 mL every 6 hours.
Children 4 to under 12 years: Ask a doctor.
Children under 4 years: Do not use.
How is NyQuil® available?
NyQuil® is available in the following dosage forms and strengths:
- Liquid 8FL oz (236ML)
- Liquid 12FL oz (354ML)
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 NyQuil®, 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.
NYQUIL™ COUGH SUPPRESSANT. http://vicks.com/en-us/shop-products/nyquil/nyquil-cough-suppressant. Accessed January 3, 2017
NyQuil Cough. https://www.drugs.com/mtm/nyquil-cough.html. Accessed January 3, 2017
Review Date: June 24, 2017 | Last Modified: September 12, 2019