The difference between NyQuil and DayQuil is the third ingredient, that’s Doxylamine for NyQuil and Phenylephrine for DayQuil. ... As I just stated, NyQuil and DayQuil can not be taken at the same time, but they can be taken on the same day by changing the time of these meds. DayQuil, as its name indicates, should be used during …DayQuil and NyQuil COMPLETE™ + Vicks VapoCOOL Cold & Flu provide fast and effective, all-in-one cold & flu symptom relief, with a cooling flavour sensation that will ripple through your senses. DayQuil COMPLETE + Vicks VapoCOOL relieves nasal congestion and pain, chest congestion, cough due to cold, cough with phlegm, sore throat pain ...The main difference between Dayquil and Nyquil is that Nyquil is intended to be taken at night, while Dayquil is intended to be taken during the day. This is because Nyquil contains doxylamine succinate, which can cause drowsiness.NyQuil is an over-the-counter medication for nighttime cold and flu relief, often inducing drowsiness, while DayQuil provides similar relief without causing drowsiness, designed for daytime use. Difference Between NyQuil and DayQuilThe difference between Nyquil and Zzzquil is that Nyquil can be used for relieving colds, coughs, fever, and sleeplessness. Whereas, Zzzquil can be used only for having a good night’s sleep and does not provide relief from other issues. ... Even Dayquil contains the same ingredients as Nyquil and serves the same purposes, just without …HealthCentral states that one of the significant differences between NyQuil and DayQuil is that NyQuil is in liquid suspension form and is intended for night time …dangerously high blood pressure (severe headache, blurred vision, buzzing in your ears, chest pain, shortness of breath, uneven heartbeats, seizure). Common side effects of Nyquil Vapocool may include: feeling restless or excited. This is not a complete list of side effects and others may occur.According to Vicks.com, the correct dose of DayQuil Cold and Flu liquid is 2 tablespoons, or 30 milliliters, every four hours for adults and children 12 years or older. Children fr...Conclusion. The main difference between NyQuil and DayQuil is that NyQuil contains an antihistamine, while DayQuil does not. Both medications are meant to be taken when you have a cold or the flu, but they work in different ways. NyQuil is designed to help you sleep, while DayQuil is meant to help you feel more alert.This is most effective if you *only* can’t fall asleep. So that means if you’re struggling with insomnia, ZzzQuil is a better option for you then NyQuil. It doesn’t matter if you regularly can’t fall asleep, or if once a while you struggle with that. Taking ZzzQuil will help you fall asleep more easily.DayQuil/NyQuil Severe Cold and Flu may also be used for purposes not listed in this medication guide. Prescription and OTC. Diphenhydramine is an antihistamine that can be used to treat allergic reactions, relieve motion sickness, as a sleep aid, and relieve some symptoms of Parkinson's disease. Sedation is a common side...Key takeaways: NyQuil is a brand name for several over-the-counter (OTC) cough and cold products. The specific dosages, as well as the ingredients, can vary …Bloomberg / Getty Images. DayQuil Ingredients. DayQuil is available in either a gel cap or syrup formulation. Both are orange-colored (in contrast to their nighttime counterpart, NyQuil, which is green). The …VICKS DAYQUIL AND VICKS NYQUIL HIGH BLOOD PRESSURE COLD AND FLU- acetaminophen, dextromethorphan hydrobromide, doxylamine succinate kit If this SPL contains inactivated NDCs listed by the FDA initiated compliance action, they will be specified as such.DayQuil and NyQuil High Blood Pressure are also decongestant free, unlike some ordinary cold medicines. With this DayQuil and NyQuil combo pack, you'll have the cold and flu multi-symptom relief you need on hand, day and night. Helps treat bothersome symptoms like headache, fever, minor aches and pains, sore throat, and cough.NyQuil. Like DayQuil, NyQuil combination products typically contain acetaminophen and dextromethorphan. Instead of phenylephrine, NyQuil usually has doxylamine, which is an antihistamine that helps with runny nose and sleep. Sudafed. Like phenylephrine, Sudafed (pseudoephedrine) is a decongestant that can help if you have a stuffy nose. Theraflu.Programmable money, or digital money, can be coded to act in a certain way based on predetermined conditions. SBI Holdings, a Japanese securities and banking giant that launched a ...Risks of Overdosing on Dayquil. Overdosing on Dayquil can have serious consequences, including liver damage due to the acetaminophen content. Acetaminophen overdose is a leading cause of emergency room visits each year. It's essential to follow the recommended dosage guidelines to avoid these risks.Answer. No, you should not cut or split NyQuil LiquiCaps. Not only would it be dangerous to attempt to cut into a small and slippery LiquiCaps capsule with a knife or blade, but the amount of liquid inside the LiquiCaps is so small it would be difficult to even take the full dose should you get it open. Perhaps most importantly here, you simply ...Is beach tanning worse than just being outside? Visit HowStuffWorks to learn whether or not beach tanning is worse than being outside in general. Advertisement Overexposure to the ...Key takeaways: NyQuil is a brand name for several over-the-counter (OTC) cough and cold products. The specific dosages, as well as the ingredients, can vary …We would like to show you a description here but the site won’t allow us.2 BOTTLES - 1 DAYQUIL/1 NYQUIL; 8 FL OZ (236 mL) EACH; TOTAL 16 FL OZ (472 mL) INGREDIENTS AND APPEARANCE. VICKS DAYQUIL AND VICKS NYQUIL HIGH BLOOD PRESSURE COLD AND FLU acetaminophen, dextromethorphan hydrobromide, doxylamine succinate kit: Product Information: Product Type: HUMAN …Unlike NyQuil, it doesn’t contain the active ingredient doxylamine, which is an antihistamine that can make you feel drowsy. ... DayQuil treats many symptoms of the common cold and flu. The ...what is NyQuil and DayQuil ?,what is NyQuil and DayQuil ?,what are the Difference Between NyQuil and DayQuil?,#medicalknowledgeonlineTOPICS1. ANATOMY – Top...Sep 4, 2014 · Depends on which version you buy: • The Nighttime Allergy Relief version of QlearQuil is identical to ZzzQuil, with diphenhydramine being the only active ingredient. • The All Day & All Night 24... Comparing Benadryl vs DayQuil/NyQuil Severe Cold And Flu. Benadryl (diphenhydramine) DayQuil/NyQuil Severe Cold and Flu (acetaminophen / dextromethorphan / doxylamine / guaifenesin / phenylephrine) Prescription and OTC. Benadryl is an antihistamine that can be used to treat allergic reactions, relieve motion sickness, as a sleep aid, and ...Indices Commodities Currencies StocksYou can use both Dayquil Cold and Flu Relief Liquid and NyQuil Cold and Flu Nighttime Relief Liquid on the same day but DO NOT take them at the same time. 1. Taking both products at the same time can lead to liver damage due to an excessive dose of acetaminophen (also known as Tylenol), which is found … See moreKey points. DayQuil should not be combined with Tylenol as both contain the same drug, acetaminophen. Taking DayQuil and Tylenol together could result in an overdose of acetaminophen, which could cause serious side effects. Dosing of DayQuil and Tylenol should be separated by at least four to six hours. Thanks for reaching out to us!As its name implies, DayQuil is a medication meant to be taken during the day since it is less likely to make you drowsy (unlike its sibling, the nighttime cold and flu medication NyQuil, which ...NyQuil is an over-the-counter medication for nighttime cold and flu relief, often inducing drowsiness, while DayQuil provides similar relief without causing drowsiness, designed for daytime use. Difference Between NyQuil and DayQuilVicks DayQuil VapoCOOL provides fast, powerful, maximum strength 9-symptom relief you can feel. Helps treat coughing, stuffy nose, minor body pain, chest congestion, sinus congestion, sinus pressure, sore throat, headache, and fever. Use when you need fast, non-drowsy daytime relief for your cold symptoms. Shop Products.The difference between NyQuil and DayQuil is the third ingredient, that’s Doxylamine for NyQuil and Phenylephrine for DayQuil. ... As I just stated, NyQuil and DayQuil can not be taken at the same time, but they can be taken on the same day by changing the time of these meds. DayQuil, as its name indicates, should be used during …Summary. Dayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, …VICKS NYQUIL HIGH BLOOD PRESSURE COLD AND FLUacetaminophen, dextromethorphan hydrobromide, and doxylamine succinate liquid. Product Information. Item Code (Source) NDC:69423-973. Route of Administration. ORAL. Active Ingredient/Active Moiety. Ingredient Name. Basis of Strength.2 BOTTLES - 1 DAYQUIL/1 NYQUIL 8 FL OZ (236 mL) EACH; TOTAL 16 FL OZ (473 mL) INGREDIENTS AND APPEARANCE. VICKS DAYQUIL NYQUIL BERRY KIDS COLD AND COUGH PLUS chlorpheniramine maleate, dextromethorphan hbr, guaifenesin, phenylephrine hcl kit: Product Information: Product Type: HUMAN OTC …Dayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever.6.25 mg of doxylamine. 5 mg of phenylephrine. The typical adult dosage of NyQuil Severe is 2 pills or 30 mL by mouth every 4 hours as needed. Don’t take more than 4 doses (8 pills or 120 mL) in 24 hours. It’s important to note that the VapoCOOL version contains 10% alcohol, whereas the other flavors are alcohol free.The most significant difference between DayQuil and NyQuil lies in their intended use. DayQuil is designed for daytime use, providing relief without causing drowsiness. On the other hand, NyQuil is formulated specifically for use at night, helping to promote a sound and uninterrupted sleep.Answer. Mucinex and NyQuil are both over-the-counter products that are used to treat symptoms of the cold and flu. However, they contain different active ingredients. Mucinex contains guaifenesin, an expectorant, while NyQuil is a combination ingredient product, containing: So, as a general point, since NyQuil contains more drugs than Mucinex ...DayQuil Cold & Flu High Blood Pressure Liquid Medicine provides maximum strength relief for your worst cold & flu symptoms in a non-drowsy formula so you can get on with your day. DayQuil High Blood Pressure is sugar free and alcohol free. DayQuil High Blood Pressure is also decongestant free, unlike some ordinary cold medicines. Helps treat ...The difference between DayQuil and NyQuil. NyQuil for sleep and DayQuil for sleep in both their liquid and pill forms can be used to help provide relief for common symptoms associated with a cold and flu. There’s one key difference between the two: NyQuil will cause drowsiness, while DayQuil is a non-drowsy drug.Cons. • Can cause eye pain and stinging. • Dilating effects can last for up to 7 hours ( or longer) • The 10% strength can raise blood pressure in people with certain heart or thyroid problems. Pros. • Can treat a wide variety of common cold or flu symptoms. • More convenient to take three medications in a single dose.Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever. Besides Dayquil Cold and Flu, this medication is available under many other brand names and as a generic. It's available as pills and a liquid that's typically taken every 4 ...Exact Answer: 4 to 6 hours. Dayquil is a drug that is used to battle the symptoms of cold and flu in an individual. It is a mixture of acetaminophen, dextromethorphan, and phenylephrine. The drug helps assuage symptoms like fever, cough, cold, nasal congestion, headaches, etc. It is used mostly during the day to relieve …Dec 7, 2023 · HealthCentral states that one of the significant differences between NyQuil and DayQuil is that NyQuil is in liquid suspension form and is intended for night time use only, whereas DayQuil has a different chemical structure which does not promote drowsiness, making it ideal for use any time of the day. Another notable difference is that NyQuil contains an antihistamine whereas DayQuil contains ... Dec 22, 2022 · DayQuil. vs. NyQuil and the dosage? NyQuil contains 650 mg of acetaminophen and 30 mg of dextromethorphan. Unlike DayQuil, NyQuil products also contain 12.5 mg of doxylamine succinate. Mucinex can safely be taken with the original DayQuil Cold & Flu as there is no interaction between the medications.. However, It is important to be aware that DayQuil is a brand name, and comes in a variety of additional brand formulations (e.g. DayQuil Severe), some of which contain the active ingredient in Mucinex (guaifenesin). It is not … DayQuil and NyQuil COMPLETE™ + Vicks VapoCOOL Cold & Flu provide fast and effective, all-in-one cold & flu symptom relief, with a cooling flavour sensation that will ripple through your senses. DayQuil COMPLETE + Vicks VapoCOOL relieves: nasal congestion and pain, chest congestion, cough due to cold, cough with phlegm, sore throat pain ... Mar 18, 2024 · Dayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever. NyQuil Severe Cold Flu, Max Strength, Berry – 12 oz. What is the difference between red and green NyQuil? Probably bc NyQuil was green DayQuil new, so the consumer’s mental association would be sleep/green. Also, red is energetic.Red cherry.Green odd taste you’ll only consume if you need sleep.Mar 26, 2024 · Phenylephrine 5 mg. Guaifenesin 200 mg. The children’s dosage for DayQuil Severe is as follows: Ages 12 and older: Give 30 mL by mouth every 4 hours as needed. Don’t give more than 4 doses (120 mL) in 24 hours. Ages 6 to 11: Give 15 mL by mouth every 4 hours as needed. Don’t give more than 4 doses (60 mL) in 24 hours. DayQuil. DayQuil combination OTC products usually contain acetaminophen (for fever and pain), dextromethorphan (for coughing fits), and phenylephrine (for stuffy nose). Mucinex. Mucinex (guaifenesin) is an expectorant that helps relieve chest congestion. An expectorant is a medication that helps you cough up mucus …This is most effective if you *only* can’t fall asleep. So that means if you’re struggling with insomnia, ZzzQuil is a better option for you then NyQuil. It doesn’t matter if you regularly can’t fall asleep, or if once a while you struggle with that. Taking ZzzQuil will help you fall asleep more easily.DayQuil and NyQuil COMPLETE™ + Vicks VapoCOOL Cold & Flu provide fast and effective, all-in-one cold & flu symptom relief, with a cooling flavour sensation that will ripple through your senses. DayQuil COMPLETE + Vicks VapoCOOL relieves: nasal congestion and pain, chest congestion, cough due to cold, cough with phlegm, sore throat pain ...Vicks DayQuil & NyQuil Severe Cold & Flu Medicine Acetaminophen Honey Liquid. 2 pk/12 oz. Sign In to Add $ 68. 57. DayQuil Severe with Vicks Vapocool Cold & Flu (Pack of 4) 4 pack. Sign In to Add $ 13. 49. Vicks DayQuil Severe Cold and Flu Medicine. 12 fl oz. Sign In to Add $ 22. 99. With this DayQuil and NyQuil Combo pack, you'll have the cold and flu multi-symptom relief you need on hand, day and night. When you have a cold and need to get a good night's sleep, NyQuil helps relieve headache, fever, sore throat, minor aches and pains, sneezing, runny nose, and cough. For powerful, non-drowsy daytime relief so you can get ... Summary. Sudafed (pseudoephedrine) is a non-drowsy decongestant taken by mouth to treat nasal and sinus congestion from allergies and the common cold. It's available in a short-acting version that's taken once every 4 to 6 hours. It also comes in longer-acting versions that are taken every 12 or 24 hours, depending on the dose.Clinically reviewed on 05-01-2024. Mucinex and NyQuil are both very popular over-the-counter cold and flu medications, the main difference being their active ingredients. Mucinex contains guaifenesin as an active ingredient, whereas NyQuil is a combination drug containing acetaminophen, dextromethorphan, and doxylamine.Exploring Dayquil. Dayquil, on the other hand, is a combination medication that provides relief from multiple cold and flu symptoms. Its active ingredients include acetaminophen, a pain reliever and fever reducer, dextromethorphan, a cough suppressant, and phenylephrine, a nasal decongestant. Dayquil comes in liquid or capsule form. Key …Vicks DayQuil SEVERE Cold Flu provides max-strength, non-drowsy, daytime relief for your worst cold and flu symptoms. DayQuil SEVERE relieves headache, fever, sore throat, minor aches pains, nasal congestion, sinus pressure, and cough. Contains acetaminophen. Vicks NyQuil Cold Flu delivers powerful nighttime relief for your worst cold and flu symptoms …Bottom Line – Robitussin vs Dayquil. DayQuil Cold & Flu (active ingredients – dextromethorphan, acetaminophen, and phenylephrine) is a combination medication that is typically used to treat a cough, headaches, stuffy nose, fever, body aches, and sinus congestion caused by allergies, the common cold, or the flu.Aug 12, 2018 · This is most effective if you *only* can’t fall asleep. So that means if you’re struggling with insomnia, ZzzQuil is a better option for you then NyQuil. It doesn’t matter if you regularly can’t fall asleep, or if once a while you struggle with that. Taking ZzzQuil will help you fall asleep more easily. ADD this Infographic to your Website/Blog: Simply copy the code below and paste it into the HTML of your blog or website: More Health and Fitness News & Tips at Greatist. Targeting...Vicks NyQuil SEVERE provides 9-symptom relief to treat coughing, stuffy nose, minor aches, sneezing, sinus congestion, sinus pressure, sore throat, headache, and fever. Vicks has been trusted for over 125 years to relieve your cold and flu symptoms. When you need fast, powerful cold and flu relief, turn to Vicks DayQuil and Nyquil.According to Vicks.com, the correct dose of DayQuil Cold and Flu liquid is 2 tablespoons, or 30 milliliters, every four hours for adults and children 12 years or older. Children fr...Dayquil and Nyquil are ubiquitous in American medicine cabinets. Everyone knows that Dayquil helps alleviate the symptoms of flu and cold without causing drowsiness like Nyquil. Just like myths about banana spiders, there are plenty of misconceptions surrounding this ability. People often claim that the difference between …A: NyQuil comes as a liquid or gel caps. NyQuil relieves your sneezing, sore throat, headache, minor aches and pains, fever, runny nose, and cough, so you can get the rest you need. NyQuil SEVERE delivers maximum symptom-fighting ingredients to relieve your worst cold symptoms at night. NyQuil Cough Suppressant relieves your cough so you …2 BOTTLES – 1 DAYQUIL/1 NYQUIL 12 FL OZ (354 mL) EACH; TOTAL 24 FL OZ (708 mL) INGREDIENTS AND APPEARANCE. VICKS DAYQUIL AND VICKS NYQUIL COLD AND FLU acetaminophen, dextromethorphan hydrobromide, phenylephrine hydrochloride, and doxylamine succinate kit: Product Information: …Dec 22, 2022 · DayQuil. vs. NyQuil and the dosage? NyQuil contains 650 mg of acetaminophen and 30 mg of dextromethorphan. Unlike DayQuil, NyQuil products also contain 12.5 mg of doxylamine succinate. NyQuil High Blood Pressure is also decongestant free, unlike some ordinary cold medicines. Helps treat bothersome symptoms like headache, fever, sore throat, minor aches and pains, sneezing, runny nose, and cough. Vicks NyQuil™ high blood pressure cold and flu relief nighttime liquid medicine helps relieve cold & flu symptoms for people with ...Wasion Meters Group LtdShs News: This is the News-site for the company Wasion Meters Group LtdShs on Markets Insider Indices Commodities Currencies StocksDayquil Cold and Flu is a combination of three active ingredients: acetaminophen (an analgesic), dextromethorphan (a cough suppressant), and phenylephrine (a decongestant). Dayquil Cold and Flu helps treat symptoms from the common cold and flu in adults and children. It can relieve stuffy nose, cough, sore throat, headache, aches, and fever.DayQuil Cold & Flu High Blood Pressure Liquid Medicine provides maximum strength relief for your worst cold & flu symptoms in a non-drowsy formula so you can get on with your day. DayQuil High Blood Pressure is sugar free and alcohol free. DayQuil High Blood Pressure is also decongestant free, unlike some ordinary cold medicines. Helps treat ...DayQuil™ Cough DM & Congestion delivers max strength, non-drowsy relief for your worst cough symptoms so that you can power through your day. Controls cough, thins and loosens mucus, and helps relieve chest congestion. Temporarily Relieves: Cough associated with the common cold Helps loosen phlegm (mucus) and thin bronchial secretions to rid ... Prescribed for Cold Symptoms. DayQuil/NyQuil Severe Cold and Flu may also be used for purposes not listed in this medication guide. Prescription and OTC. Tylenol is an effective mild pain reliever with a low risk of side effects but the potential for liver damage exists, even at recommended dosages. The risk is increased with higher dosages, a ...
NyQuil is intended for use at night. While DayQuil is specifically developed to treat cold and flu symptoms throughout the day. DayQuil is recommended, though, to remain alert throughout the day. …. Marlboro red carton price
The main difference between the two is that DayQuil is designed to provide relief from symptoms during the day, while NyQuil is formulated to help you sleep at night. DayQuil contains ingredients such as acetaminophen (a pain reliever/fever reducer), dextromethorphan (a cough suppressant), and phenylephrine (a nasal decongestant).The difference between Nyquil and Zzzquil is that Nyquil can be used for relieving colds, coughs, fever, and sleeplessness. Whereas, Zzzquil can be used only for having a good night’s sleep and does not provide relief from other issues. ... Even Dayquil contains the same ingredients as Nyquil and serves the same purposes, just without …Vicks® DayQuil & NyQuil Kids Honey Combo. Vicks® DayQuil & NyQuil Kids Honey Combo relieves your child's cough, cold and congestion symptoms. It is specially designed for children with a great tasting, honey-licious flavor. Intended for children ages 6+. The Vicks® DayQuil & NyQuil Kids Honey combo-pack offers coverage for day and night relief.6.25 mg of doxylamine. 5 mg of phenylephrine. The typical adult dosage of NyQuil Severe is 2 pills or 30 mL by mouth every 4 hours as needed. Don’t take more than 4 doses (8 pills or 120 mL) in 24 hours. It’s important to note that the VapoCOOL version contains 10% alcohol, whereas the other flavors are alcohol free.American Airlines has a secret invitation-only elite status called Concierge Key for its most-valuable customers. Now, some CKs are being hit up for more money. For years, American... The most significant difference between DayQuil and NyQuil lies in their intended use. DayQuil is designed for daytime use, providing relief without causing drowsiness. On the other hand, NyQuil is formulated specifically for use at night, helping to promote a sound and uninterrupted sleep. The most significant difference between DayQuil and NyQuil lies in their intended use. DayQuil is designed for daytime use, providing relief without causing drowsiness. On the other hand, NyQuil is formulated specifically for use at night, helping to promote a sound and uninterrupted sleep.Five Star Bancorp Registered Shs News: This is the News-site for the company Five Star Bancorp Registered Shs on Markets Insider Indices Commodities Currencies StocksWhat is the difference between Vicks NyQuil Cold & Flu Nighttime Relief LiquiCaps and Vicks NyQuil Cold & Flu Nighttime Relief Liquid? Find out which is better and their overall performance in the painkiller ranking.Investing in the major grain categories of wheat, soybeans and corn provides exposure to an alternate asset class with different performance potential than the standard stock and b...Vicks NyQuil Kids Cold and Cough + Congestion Relief is from the makers of Vicks, the Brand parents trust for over 125 Years. It is flavored with real honey and is fast, proven relief for your little one. For Kids 6+. Formulated for kids and tastes great! Free of high fructose corn syrup, alcohol, aspirin, and acetaminophen. Shop Products.NyQuil Cough omits the acetaminophen but has the dextromethorphan and doxylamine succinate to cut down on your coughing. DayQuil has acetaminophen like its …Vicks® DayQuil & NyQuil Kids Honey Combo. Vicks® DayQuil & NyQuil Kids Honey Combo relieves your child's cough, cold and congestion symptoms. It is specially designed for children with a great tasting, honey-licious flavor. Intended for children ages 6+. The Vicks® DayQuil & NyQuil Kids Honey combo-pack offers coverage for day and night relief.With this DayQuil and NyQuil convenience pack, you'll have the cold and flu multi-symptom relief you need on hand, day and night. Helps treat bothersome symptoms like headache, fever, minor aches and pains, sore throat, and cough. Contains acetaminophen. Now available in 25% smaller liquicaps*. Now available in an easy to open bottle†.One key difference between the two medications is that NyQuil contains doxylamine succinate as an additional ingredient. Doxylamine succinate acts as an antihistamine and has sedative effects that can help with sleep during illness. This makes NyQuil more suitable for nighttime use when drowsiness is not a concern..