Is zzzquil safe to take every night - Diphenhydramine HCL is a common antihistamine. Originally used to treat symptoms of allergies, such as mild rashes, itching, watery eyes, running nose and sneezing, it was soon discovered that Diphenhydramine HCL could help people fall and stay asleep. We’ve formulated our ZzzQuil products around this ingredient to give you the best sleep ...

 
Jan 6, 2023 · Diphenhydramine can cause decreased reaction times and dizziness. In older people with other medical problems or physical impairments, this may lead to falls or accidents, especially while getting up to urinate at night. The potential for bone fractures is a notable concern. . Southern hibachi express

Fortunately, taking Zzzquil seems to do the trick — but recently I discovered it’s somewhat unhealthy to be taking it each and every night, and is only intended to be used once or twice a week at maximum. So unhealthy, that it may cause earlier onset dementia or alzheimer’s, which I certainly don’t want to be concerned with as a 19 year ... Hi! I have been on 10mg of Lexapro for just over a year now and I take zzzquil every night! Never had a problem :) 10mg of melatonin usually knocks me out. There is no issue at all. As long as the combination isn’t causing you side effects that you deem intolerable there is not an issue. I recently started on 10mg of escitalopram (Lexapro ...Belsomra is used to treat insomnia in adults who have trouble falling asleep, staying asleep, or both. Symptoms of insomnia may include: lying awake for a long time before falling asleep. waking ...The study rated Diphenhydramine HCL “fair,” making it safe to use in pregnancy. According to animal models, Zzzquil use in pregnancy up to five times the human dose did not result in birth abnormalities or infertility. Well-controlled studies on pregnant women are still missing or are inadequate.Jan 24, 2018 · They are commonly used to treat allergies and are generally safe. However, one of these drugs, Benadryl (diphenhydramine), is commonly used in over-the-counter sleep agents. Taking an over-the-counter sleep aid with diphenhydramine once in a while is generally not going to cause problems, other than a possible hangover the next day. Hi! I have been on 10mg of Lexapro for just over a year now and I take zzzquil every night! Never had a problem :) 10mg of melatonin usually knocks me out. There is no issue at all. As long as the combination isn’t causing you side effects that you deem intolerable there is not an issue. I recently started on 10mg of escitalopram (Lexapro ...These sleeping aids come in liquid, gel capsule, and tablet options, like ZzzQuil and Unisom, and seem to work like magic, delivering fast, easy access to rest. But that convenience might come at ...May 11, 2023 · The recommended dose of Benadryl or ZzzQuil for sleep is usually 50 mg by mouth 30 minutes before bedtime. This gives it some time to kick in. Depending on your situation and response to the medication, you could take a lower 25 mg dose instead. Also, keep in mind that you should only take one Benadryl product at a time. When it comes to taking Zzzquil with high blood pressure, there are a few potential risks to consider. While Zzzquil is generally safe for most people when used as directed, it can cause side effects such as drowsiness, dizziness, and dry mouth. These side effects may be more pronounced in individuals with high blood pressure. ZzzQuil, a night time sleep medication that contains diphenhydramine, and Prozac (fluoxetine) are generally considered safe to take together. However, there are some concerns: Increased risk of side effects such as sedation, dizziness, and difficulty concentrating. Increased risk of QT prolongation, a risk factor for ventricular arrhythmias.This latest addition to the Vicks ZzzQuil product line-up also contains a botanical blend of lavender, chamomile, valerian root, and lemon balm. Vicks ZzzQuil PURE Zzzs Melatonin Gummies are also vegan and free of artificial flavors, gluten, lactose, and gelatin. “There is no ‘one-size-fits-all’ approach to overcome sleeplessness, …Medications that block histamine, such as ZzzQuil (diphenhydramine) or Unisom (doxylamine), are also sold over the counter as sleep aids. Melatonin supplements, in particular, have proven to be very safe, with some experts saying they can be used by people who have insomnia to curb chronic benzodiazepine use.Are you in need of a new mattress? Look no further than Big Lots’ mattress sale. With their wide selection and unbeatable prices, you can finally get that good night’s sleep you’ve...How often do you feel sleepy during the day? Have you ever fallen asleep at work or had trouble staying awake while driving, even after a good night’s rest? If so, you’re not alone... Zzzquil: Diphenhydramine belongs to a group of medications known as antihistamines. Antihistamines are used to treat symptoms caused by allergies, including itchy and watery eyes, sneezing, runny nose, and skin irritation. Diphenhydramine also causes drowsiness, and can be used by adults and children 12 years of age and older who occasionally have trouble sleeping (insomnia). The effects of ... Exercising during pregnancy can be a confusing subject. How much should you really be exercising if you’re pregnant? And how can you go about doing so in a safe and enjoyable way? ...Who doesn't love to get things for free? But if you think about it, are free apps really free? And more importantly, are free apps safe? We all love free stuff. We'll try almost an...Hello and thank you for your question! Very simply, the difference between the two products (ZzzQuil Ultra and ZzzQuil) is the active ingredient: ZzzQuil Ultra contains doxylamine 25mg per tablet. 'Regular' ZzzQuil contains diphenhydramine 25 mg per liquicap. Both doxylamine and diphenhydramine are sedating antihistamines, which …The night sky is filled with stars, planets, and other celestial bodies that can be seen without the aid of a telescope. While it can be difficult to identify individual stars and ...Getting a good night’s sleep is essential for overall health and wellbeing. Unfortunately, many people struggle to get the quality sleep they need. Eight Sleep is a revolutionary s...It would be better to work on better sleep habits and only use it when you really need it. Might start losing effectiveness taken nightly. Ask a doctor. Speak to a physician or your local pharmacist regarding the extended use of zzzquil. It is over the counter, but it does state it's only for occasional use. When it comes to taking Zzzquil with high blood pressure, there are a few potential risks to consider. While Zzzquil is generally safe for most people when used as directed, it can cause side effects such as drowsiness, dizziness, and dry mouth. These side effects may be more pronounced in individuals with high blood pressure. Most side effects of melatonin use are mild and will go away on their own. They may include headaches, upset stomach, grogginess, sleeplessness, irritability and dizziness. The likelihood of these side effects increases with the dosage, which is why we recommend you take no more than 2mg of melatonin per night. These strategies can help improve your sleep quality even if you decide to take DayQuil at night. Related: Improving Sleep Quality With Melatonin For Sleep Apnea. Tips for Taking DayQuil at Night. Now that we’ve addressed the concerns surrounding taking DayQuil at night, let’s explore some tips to help you navigate this decision …Most of us who prescribe benzodiazepines (BZs) have a love-hate relationship with them. On the one hand, they Most of us who prescribe benzodiazepines (BZs) have a love-hate relati...Answer. Lexapro (escitalopram) and ZzzQuil (diphenhydramine) are considered safe to take together.They do not have any reported drug interactions. Additive Side Effects. However, both drugs can have additive side effects so it is important to be aware of them and potential symptoms you may experience. The side effects with …Feb 25, 2018 · Taking melatonin occasionally with ZzzQuil (diphenhydramine) is considered safe and there is no drug interaction between the two. Taking Melatonin With ZzzQuil Melatonin is a herbal supplement that is taken to help with jet lag, insomnia, shift-work disorder, circadian rhythm disorders in the blind and other sleep-wake cycle disturbances. Buildup in your sink pipes can occur over time, leading to a clog. Here are seven safe options to clear it up and tips for keeping pipes clear. One of the more frustrating home dil...A movie night at home isn’t complete without hot popcorn. Microwavable popcorn may be convenient, but it’s not the healthiest nor the tastiest. Popcorn poppers make it easy to make... Most side effects of melatonin use are mild and will go away on their own. They may include headaches, upset stomach, grogginess, sleeplessness, irritability and dizziness. The likelihood of these side effects increases with the dosage, which is why we recommend you take no more than 2mg of melatonin per night. It’s no secret that the ever-growing number of Airbnb properties around the world has changed the way people travel. In fact, on any given night, over two million people across the...The medication can take a few weeks to reach its full potential. For some people, it may take even longer. Generally, it is recommended to take gabapentin for at least four to six weeks or at the highest tolerated dose for at least two weeks. However, nerve pain can be a long-term issue, lasting for three or more months.For short-term sleep problems (insomnia) in adults. The usual dose is one 2mg slow release tablet taken 1 to 2 hours before bedtime. Sometimes your doctor will recommend that you only take melatonin 2 or 3 times a week to see if that improves your sleep first. Melatonin should only be taken for a maximum of 13 weeks to treat short-term sleep ...Most side effects of melatonin use are mild and will go away on their own. They may include headaches, upset stomach, grogginess, sleeplessness, irritability and dizziness. The likelihood of these side effects increases with the dosage, which is why we recommend you take no more than 2mg of melatonin per night. Diphenhydramine is an antihistamine used to relieve symptoms of allergy, hay fever, and the common cold. These symptoms include rash, itching, watery eyes, itchy eyes /nose/throat, cough, runny ... When it comes to taking Zzzquil with high blood pressure, there are a few potential risks to consider. While Zzzquil is generally safe for most people when used as directed, it can cause side effects such as drowsiness, dizziness, and dry mouth. These side effects may be more pronounced in individuals with high blood pressure.HealthTap Telehealth. A member asked: Can you take zzzquil every night? A doctor has provided 1 answer. Dr. Steven Watry answered. Specializes in General Practice. …We would like to show you a description here but the site won’t allow us.uses. What is Zzzquil Night Pain (Oral) used for? Insomnia. Migraine. Pain. Headache. warnings. What is the most important information I should know about Zzzquil Night …Is ZzzQuil safe for your liver? 'P.M.' medicines like Tylenol, Aleve, Excedrin, and even ZzzQuil can cause big problems like liver damage, ulcers, or kidney damage. Is ZzzQuil safe to take every night? Don't take ZzzQuil every night. Talk with your doctor if you have questions about how long you can take ZzzQuil and at what dosage.Taking melatonin as a sleep aid. This method is meant to help you fall asleep faster in a very short amount of time. Dr. Goldman suggests starting with 1 mg, and then increasing that amount by 1 ...Stop use and ask a doctor if sleeplessness persists continuously for more than two weeks. Insomnia may be a symptom of serious underlying medical illness. I don't have a source to quote, but the active ingredient in zzzquil is diphenhydramine and your tolerance to diph goes up a lot in a little bit of time.When it comes to getting a good night’s sleep, choosing the right mattress is essential. With so many options on the market, it can be overwhelming to decide which one is right for...ZzzQuil ULTRA tablets provide relief for adult occasional sleeplessness with Doxylamine Succinate. ZzzQuil ULTRA tablets are clinically proven to help you sleep 27% longer^, wake up refreshed and are non-habit forming. ^ vs. control - clinical data on file with FDA in support of NDA. 4.5 rating.This latest addition to the Vicks ZzzQuil product line-up also contains a botanical blend of lavender, chamomile, valerian root, and lemon balm. Vicks ZzzQuil PURE Zzzs Melatonin Gummies are also vegan and free of artificial flavors, gluten, lactose, and gelatin. “There is no ‘one-size-fits-all’ approach to overcome sleeplessness, …Are you looking to spice up your relationship and add a little excitement to your date nights? Look no further. We’ve compiled a list of date night ideas that are sure to rekindle ...ZzzQuil. Nytol. Unisom SleepGels. Advil PM (which also contains the anti-inflammatory ibuprofen) Tylenol PM (which also contains the pain reliever …During the summer you want to get home from work and enjoy your outside space. Eating outside is an option most nights but you won’t want to eat food that takes too long to prepare...In today’s fast-paced corporate world, maintaining a safe and hygienic work environment is of utmost importance. One often overlooked aspect of this is the cleanliness of the offic...Taking melatonin as a sleep aid. This method is meant to help you fall asleep faster in a very short amount of time. Dr. Goldman suggests starting with 1 mg, and then increasing that amount by 1 ...12. Buy Now. FALL ASLEEP FAST. ZzzQuil liquid capsules help you fall asleep in as little as 20 minutes. NON-HABIT FORMING. ZzzQuil LiquiCaps contain a non-habit-forming ingredient, Diphenhydramine HCI, that helps you get the sleep you need. Each dose (two LiquiCaps) contains 50mg. WAKE REFRESHED. Wake refreshed.Answer. Thanks so much for reaching out to us! Tylenol (acetaminophen) is safe to take with most ZzzQuil products, including the original 'ZzzQuil'. There are no known interactions between the two. Now, this only applies to most ZzzQuil products. Similar products, like NyQuil, 'ZzzQuil Night Pain' and DayQuil already contain Tylenol ...In today’s world, home security is of utmost importance. With advancements in technology, we now have access to innovative tools and applications that can help us keep our homes sa...Applies to: ZzzQuil (diphenhydramine) and methocarbamol. Using diphenhydrAMINE together with methocarbamol may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and motor coordination.Diphenhydramine is found in several different FDA-approved medications and is safe to use in moderation. However, ZzzQuil is not intended for use every night. According to Healthline, using this product every night increases your risk of becoming dependent on it. People who take sleep aids every night may find it impossible to fall …My portfolio . My portfolio ; My watchlist ; News . News ; Stock market ; Economic ; Earnings ; Crypto ; PoliticsZzzQuil is an over-the-counter nighttime sleep aid with diphenhydramine, an antihistamine that can cause drowsiness. It is safe and effective for occasional ins…In today’s fast-paced corporate world, maintaining a safe and hygienic work environment is of utmost importance. One often overlooked aspect of this is the cleanliness of the offic...More about ZzzQuil ( diphenhydramine ) Ratings & Reviews. Melatonin has an average rating of 5.7 out of 10 from a total of 235 ratings on Drugs.com. 44% of reviewers reported a positive effect, while 36% reported a negative effect. ZzzQuil has an average rating of 2.7 out of 10 from a total of 67 ratings on Drugs.com. 16% of reviewers reported ...Nov 14, 2022 · A 2017 study revealed that 10% of adults aged 18-45 use OTC sleep aids while 17.5% of people 65 years and older do. Most over-the-counter options are considered safe when used occasionally—as long as the medication is compatible with any medical conditions you have and other medications you take. But when taken night after night, trouble can ... This product contains acetaminophen. Severe liver damage may occur if. • adult takes more than 4 doses (2 geltabs each) in 24 hrs, which is the maximum daily amount for this product. • taken with other drugs containing acetaminophen. • 3 or more alcoholic drinks every day while using this product.Newer antihistamines like Allegra and Claritin are generally safe for daily use. But allergy medications with decongestants, such as Claritin-D or Benadryl-D, could make your allergies worse with long-term use. An allergist or immunologist can offer alternative treatments such as immunotherapy or allergen desensitization. 4.2 rating. 60ct. Buy Now. Helps promote better, restorative sleep. Our sleep enhancing botanical blend works with your body to help soothe you into better, restorative sleep.*. 100% Melatonin Free. PURE Zzzs Restorative Herbal Sleep is free of drugs and hormones too. Clinically studied plant-based ingredients. It would be better to work on better sleep habits and only use it when you really need it. Might start losing effectiveness taken nightly. Ask a doctor. Speak to a physician or your local pharmacist regarding the extended use of zzzquil. It is over the counter, but it does state it's only for occasional use.Answer. While Benadryl ( diphenhydramine) can safely be used once in a while as a sleep aid, long-term use is not recommended for multiple reasons. Even the intermittent use of Benadryl for sleep isn't generally recommended if you are elderly (over 65). Studies show that the elderly population doesn't metabolize Benadryl as quickly …Sleep. Here’s Why You Shouldn’t Take a Sleeping Pill Every Night. 7 minute read. By Markham Heid. October 9, 2018 4:04 PM EDT. T ens of millions of Americans …Answer From Eric J. Olson, M.D. It's unlikely you'll become dependent on zolpidem (Ambien). Ambien and similar sleep medications can be effective, and they're much less likely to be habit-forming than some other drugs sometimes prescribed for sleep problems — for example, benzodiazepines, such as alprazolam (Xanax), lorazepam …Waking up in the middle of the night gasping for air can be a distressing experience. If you frequently experience such episodes, it’s important to get to the root of the issue. Ho...When taken 30 minutes before bedtime, a low dose of trazodone (between 25 mg and 100 mg) may be effective for sleep problems. Trazodone is considered safe to take for short-term insomnia symptoms. There isn’t much safety data available about long-term use. It can also cause various side effects, such as drowsiness and headaches.Answer From Eric J. Olson, M.D. It's unlikely you'll become dependent on zolpidem (Ambien). Ambien and similar sleep medications can be effective, and they're much less likely to be habit-forming than some other drugs sometimes prescribed for sleep problems — for example, benzodiazepines, such as alprazolam (Xanax), lorazepam …Are you in need of a new mattress? Look no further than Big Lots’ mattress sale. With their wide selection and unbeatable prices, you can finally get that good night’s sleep you’ve...Who doesn't love to get things for free? But if you think about it, are free apps really free? And more importantly, are free apps safe? We all love free stuff. We'll try almost an...Nov 14, 2022 · A 2017 study revealed that 10% of adults aged 18-45 use OTC sleep aids while 17.5% of people 65 years and older do. Most over-the-counter options are considered safe when used occasionally—as long as the medication is compatible with any medical conditions you have and other medications you take. But when taken night after night, trouble can ... Please be specific with regards to which Nyquil (there are 8 with different active ingredients) you are taking, in order to proceed with an interaction check. Or you can check for interactions yourself, just follow the instructions of the link:It is recommended that you take ZzzQuil when you have adequate time to get a full night’s sleep (about eight hours). Q: Can I take ZzzQuil every night? A: ZzzQuil should only be …Zzzquil is a sleep aid with diphenhydramine that can cause tolerance, drowsiness, rebound insomnia and other problems. Learn why you should avoid taking it every night and what to do instead for better sleep.Even if I get 9-10 hours of sleep I still feel tired. Your body produces melatonin. When you supplement it every night, that signals your body that it doesn't have to produce as much of it anymore. I think the data has changed on this. Maybe 5 years ago, I had a doctor tell me it was okay to take every night.Why is ZzzQuil Natura a safe & non-addictive solution for sleeplessness? Vicks Zzquil Natura melatonin gummy is a food supplement. Melatonin itself is not a drug, it is a natural body-produced substance by our body every night to signal the body to prepare for sleep. Melatonin as a nutraceutical is intended to supplement your body’s natural ...It is recommended that you take ZzzQuil when you have adequate time to get a full night’s sleep (about eight hours). Q: Can I take ZzzQuil every night? A: ZzzQuil should only be … liver problems --loss of appetite, stomach pain (upper right side), tiredness, itching, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes). Common side effects may include ... FALL ASLEEP FAST. ZzzQuil helps you fall asleep and wake refreshed. World's #1 selling sleep aid brand†. From the trusted Sleep Experts at Vicks. NON-HABIT FORMING. ZzzQuil contains a non-habit-forming ingredient, Diphenhydramine HCI, that helps you get …Zzzquil is Benedryl. Really. Just put into a liquid and marketed differently -- and it's way more expensive! Benedryl is a class B drug so there is no reason to believe it will do harm. ... *** I will add that I didn't take it every night and I wouldn't suggest that! And I didn't ever take a whole melatonin. I never take medicine, so I only ...During the summer you want to get home from work and enjoy your outside space. Eating outside is an option most nights but you won’t want to eat food that takes too long to prepare...When it comes to taking Zzzquil with high blood pressure, there are a few potential risks to consider. While Zzzquil is generally safe for most people when used as directed, it can cause side effects such as drowsiness, dizziness, and dry mouth. These side effects may be more pronounced in individuals with high blood pressure.Most side effects of melatonin use are mild and will go away on their own. They may include headaches, upset stomach, grogginess, sleeplessness, irritability and dizziness. The likelihood of these side effects increases with the dosage, which is why we recommend you take no more than 2mg of melatonin per night.Applies to: ZzzQuil (diphenhydramine) and methocarbamol. Using diphenhydrAMINE together with methocarbamol may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and motor coordination.The study rated Diphenhydramine HCL “fair,” making it safe to use in pregnancy. According to animal models, Zzzquil use in pregnancy up to five times the human dose did not result in birth abnormalities or infertility. Well-controlled studies on pregnant women are still missing or are inadequate. 12. Buy Now. FALL ASLEEP FAST. ZzzQuil liquid capsules help you fall asleep in as little as 20 minutes. NON-HABIT FORMING. ZzzQuil LiquiCaps contain a non-habit-forming ingredient, Diphenhydramine HCI, that helps you get the sleep you need. Each dose (two LiquiCaps) contains 50mg. WAKE REFRESHED. Wake refreshed. 24/7 support availability, start your recovery today! Call Now, We Can Help. Is It Ok to Take Sleep Aid Every Night? Sleep aids are not meant to be taken every night, …A 2017 study revealed that 10% of adults aged 18-45 use OTC sleep aids while 17.5% of people 65 years and older do. Most over-the-counter options are considered safe when used occasionally—as long as the medication is compatible with any medical conditions you have and other medications you take. But when taken night after night, …Almost every single night to sleep . I didn't take any melatonin the last two nights to sleep. One night was alright and got some hours in. ... Thanks, I stopped using Zzzquil about 6 months ago. I only used to use it because the melatonin never worked. Once I tried it again and it was working I never bought Zzzquil anymore. Mainly because you ...Antihistamines that make you sleepy can be useful as a sleep aid once in a while. But tolerance to the effects of these antihistamines develops quickly. That means the more often you take them, the less likely they are to make you sleepy. Side effects of taking first-generation antihistamines can include: Daytime drowsiness.

Taking diphenhydramine as a sleep aid for more than 7 to 10 nights is not recommended, because you will gain tolerance to it. Diphenhydramine should never be given to children to help them sleep and is best not given to children younger than 12 years of age without the direction of a physician. Use in children under 6 years old should be …. Villa formia oceanside

is zzzquil safe to take every night

Severe liver damage may occur if you take • more than 4 doses (30 mL each) in 24 hrs, which is the maximum daily amount for this product • with other drugs containing acetaminophen • 3 or more alcoholic drinks every day while using this product. Allergy Alert: Acetaminophen may cause severe skin reactions.L-Theanine. L-Theanine, an amino acid that naturally occurs in the leaves of tea plants, may be responsible for the calm that many people experience as a result of drinking tea. A small body of research suggests that L-Theanine supplements can reduce stress and anxiety, boost relaxation, and improve sleep.ZzzQuil is meant to relieve occasional sleeplessness, and shouldn't be used for insomnia lasting more than two weeks. If insomnia is affecting your daily life, such as feeling exhausted most days or having difficulty staying awake at work or while driving, talk to your healthcare provider.If you’ve ever been up late at night and shunned sleep in favor of other activities, you may actually be creating an unhealthy habit of revenge bedtime procrastination. Read More. VIEW ALL ARTICLES. ZzzQuil helps adults and children safely fall asleep fast and wake up feeling refreshed Shop for sleep aid products and learn more about ...Not too bad: That is pretty close to taking a Benadryl (diphenhydramine) every night although over time your weight could go up and your body may get tolerant to it and the medication could lose it it effectiveness. If the side effects are an issue then you can talk to a doctor about alternatives although the best choice may good sleep hygiene ...Almost every single night to sleep . I didn't take any melatonin the last two nights to sleep. One night was alright and got some hours in. ... Thanks, I stopped using Zzzquil about 6 months ago. I only used to use it because the melatonin never worked. Once I tried it again and it was working I never bought Zzzquil anymore. Mainly because you ...A: ZzzQuil Nighttime Sleep Aid is intended to use by people who have trouble getting good sleep occasionally. Q: How to take ZzzQuil Sleep Aid? A: As the manufacturer suggests, ZzzQuil Liquid can be taken as a single dose or serving using the supplied cup or a tablespoon once a day. It is advised to take one dose over every 24 …A: ZzzQuil contains diphenhydramine, an antihistamine that causes drowsiness. To help you stay awake and alert, your body produces histamine, a naturally occurring substance that interacts with receptors in your brain to promote wakefulness. If an antihistamine enters the brain, it can block the effects of histamine and cause the opposite ...Zzzquil is generally considered safe for short-term use when taken as directed. But taking it every night can cause problems, which is why the American Academy of Sleep Medicine recommends against using the drug to treat chronic sleep issues. Can you take zzzquil every night? A doctor has provided 1 answer. Dr. Steven Watry answered. Specializes in General Practice. Diphenhydramine: This is a brand of 'diphenhyramine (benadryl). It is not dangerous to use daily, but why would you have sleep problems ? Address the problems causing insomnia if you can.. and Happy Dreams ! Zzzquil is generally considered safe for short-term use when taken as directed. But taking it every night can cause problems, which is why the American Academy of Sleep Medicine recommends against using the drug to treat chronic sleep issues. A: ZzzQuil contains diphenhydramine, an antihistamine that causes drowsiness. To help you stay awake and alert, your body produces histamine, a naturally occurring substance that interacts with receptors in your brain to promote wakefulness. If an antihistamine enters the brain, it can block the effects of histamine and cause the opposite ... .

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