Last Updated on April 2, 2023 by DAVID
Dayquil is an over-the-counter medication used to treat the common cold and flu. It contains a combination of acetaminophen, dextromethorphan, and phenylephrine. While Dayquil is known for its ability to relieve symptoms such as cough, fever, and nasal congestion, many people wonder if it can also keep them awake. In this blog article, we will explore the effects of Dayquil on sleep and whether it can cause insomnia.
The Effects of Dayquil on the Body
Dayquil contains three active ingredients: acetaminophen, dextromethorphan, and phenylephrine. Acetaminophen is a pain reliever and fever reducer, while dextromethorphan is a cough suppressant. Phenylephrine is a decongestant that works by narrowing blood vessels in the nasal passages, which reduces swelling and congestion.
While each of these ingredients can cause different side effects, they generally do not cause drowsiness. In fact, Dayquil is marketed as a non-drowsy medication, meaning that it is formulated to keep you awake and alert during the day.
Can Dayquil Cause Insomnia?
While Dayquil is not specifically designed to cause insomnia, some people may experience difficulty sleeping after taking it. This is because phenylephrine, one of the active ingredients in Dayquil, is a stimulant that can increase heart rate and blood pressure, which can lead to restlessness and difficulty sleeping.
Additionally, if you take Dayquil too close to bedtime, you may still feel the effects of the medication when you try to sleep.
How to Use Dayquil Safely?
If you are considering taking Dayquil, it is important to read and follow the instructions on the label carefully. Only take the recommended dosage and do not take it more frequently than recommended. If you are unsure about how much Dayquil to take or how often to take it, consult your healthcare provider or a pharmacist.
Avoid taking Dayquil with other medications that contain acetaminophen, as taking too much acetaminophen can cause liver damage. If you are taking any other medications or have any pre-existing medical conditions, speak to your healthcare provider before taking Dayquil.
Can I take Dayquil at night?
Don’t take Dayquil at night because it is formulated to keep you awake and alert during the day. Dayquil contains phenylephrine, which is a decongestant that can increase heart rate and blood pressure, leading to restlessness and difficulty sleeping. Additionally, Dayquil also contains acetaminophen, which can cause liver damage if taken in excess.
If you must take Dayquil at night, take it at least four hours before going to bed. However, it is best to take a medication formulated for nighttime use, such as Nyquil, which contains an antihistamine that can help you sleep. If you have any concerns about taking Dayquil at night, it is recommended that you speak to your healthcare provider or a pharmacist.
You may read: Why do I sleep with my arms above my head?
Does dayquil have caffeine?
No, Dayquil does not contain caffeine. The active ingredients in Dayquil are acetaminophen, dextromethorphan, and phenylephrine, none of which are caffeine. However, phenylephrine is a decongestant that can have stimulant effects, which may make some people feel more awake or alert. Dayquil is marketed as a non-drowsy medication, so it is formulated to keep you awake and alert during the day.
What are the side effects of DayQuil?
While DayQuil is generally safe when used as directed, it can cause side effects in some people. Here are some of the most common side effects of DayQuil:
- Drowsiness: While DayQuil is marketed as a non-drowsy medication, some people may still experience drowsiness or fatigue after taking it.
- Nausea and vomiting: Acetaminophen, one of the active ingredients in DayQuil. can cause stomach upset, nausea, and vomiting in some people.
- Dizziness: Phenylephrine, another active ingredient in DayQuil, can cause dizziness or lightheadedness in some people.
- Dry mouth and throat: Dextromethorphan, the cough suppressant in DayQuil, can cause dry mouth and throat.
- Headache: Some people may experience a headache after taking DayQuil.
- Increased heart rate and blood pressure: Phenylephrine can increase heart rate and blood pressure in some people, especially if taken in high doses.
- Allergic reactions: Some people may be allergic to one or more of the ingredients in DayQuil. It can cause allergic reactions such as hives, swelling, and difficulty breathing.
If you experience any of these side effects after taking DayQuil, stop taking it and seek medical attention. Additionally, it is important to read and follow the instructions on the label carefully and not exceed the recommended dosage. If you have any concerns about taking DayQuil, speak to your healthcare provider or a pharmacist.
Dayquil is a non-drowsy medication that is generally safe for most people to use. While it is not specifically designed to cause insomnia, some people may experience difficulty sleeping after taking it due to the stimulant effects of phenylephrine. To avoid any potential sleep disturbances, take Dayquil at least four hours before going to bed. If you have any concerns about taking Dayquil, speak to your healthcare provider or a pharmacist.
David is a Certified Sleep Science Coach who analyzes sleep products and appears. He completed his master’s degree in journalism Industry from University of Hawai’i. He wants to make sure good night’s sleep for all.