Mix nyquil and benadryl

Yes, your friend has right. Nyquil is excellent choice for cold. I always use it. But I'm not sure that you can mix it with some other painkiller. I know that you should not take Nyquil and some other drugs containing acetaminophen. Acetaminophen is pain reliever and it's the main ingredient of Nyquil. It's better to ask your pharmacist.

How should I allocate my assets? It's probably the most important retirement question you can ask. Fortunately, our writers break down all the answers for… It&aposs probably the mo...Applies to: Benadryl (diphenhydramine) and ZzzQuil (diphenhydramine) Ask your doctor before using diphenhydrAMINE together with ethanol. Use alcohol cautiously. Alcohol may increase drowsiness and dizziness while you are taking diphenhydrAMINE. You should be warned not to exceed recommended dosages and to avoid activities requiring mental ...Can i take benadryl (diphenhydramine) and nyquil together? A doctor has provided 1 answer. Dr. Paul Grin answered. Specializes in Pain Management. You can, but: Not recommended due to drug interactions. Both drugs increase sedation and drowsiness. Dr Kent agreed. Answered 5/3/2021. 4.5k views.These products contain ibuprofen plus a nasal decongestant to provide relief for symptoms including: headache, fever, minor body aches and pains, sinus pressure, and nasal congestion. For further questions concerning your use of Advil products, please speak with a healthcare provider. If your symptoms continue to persist or get worse, please ...Mixing Benadryl with alcohol can intensify these side effects and will impair a person’s daily functioning. This can be life-threatening if it involves certain activities, such as driving or ...Overview. In the vast majority of individuals, it is safe to take Allegra (fexofenadine) the same day as NyQuil, even though Allegra is an antihistamine and NyQuil contains an antihistamine. However, they generally should not be taken at the same time. At the very least, they should be separated from one another by at least four to six hours to ...Nyquil Cold and Flu is a combination medication containing acetaminophen (a pain reliever), dextromethorphan (a cough suppressant), and doxylamine (an antihistamine). It's used to treat cold and flu symptoms, like sore throat, fever, cough, runny nose, sneezing, and aches, in adults and children. Nyquil Cold and Flu is available as …

Aug 14, 2023 ... Yes, you can take both Benadryl and melatonin together, but you must be mindful of extreme drowsiness and dosage.Apr 2, 2023 ... 35.3K Likes, 695 Comments. TikTok video from Dr. Ethan Melillo, PharmD (@millennialrx): “Cough and Cold Medicine I'll never take #nyquil ...Feb 28, 2018 · Mixing Benadryl with alcohol can intensify these side effects and will impair a person’s daily functioning. This can be life-threatening if it involves certain activities, such as driving or ... Apr 16, 2024 · Allergy medications from different classes can typically be combined. For example, nasal steroids, like Flonase (fluticasone propionate), and oral decongestants, like Sudafed (pseudoephedrine), are safe to take together. Oral antihistamines, such as diphenhydramine (Benadryl) and cetirizine (Zyrtec), shouldn’t be taken together without a ... Published Oct 19, 2022. Last updated May 01, 2024. Key points. Safe cold medications for those taking Eliquis include antihistamines, Tylenol (acetaminophen), the cough …Answer. It is not safe to take ZzzQuil with NyQuil as both contain sedating "first generation" antihistamines. Using both together would be considered a therapeutic duplication and can increase the risk of side effects. ZzzQuil contains diphenhydramine, the same active ingredient in Benadryl. NyQuil contains doxylamine, also a sedating "first ...I took 2 benadryl (diphenhydramine) and 30 mil of nyquil, should i worried? A doctor has provided 1 answer. Dr. Al Hegab answered. Specializes in Allergy and Immunology. Be careful: You took the maximum dose for both, don't take any for the next day or so, don't drive or operate machinery for a day also, risk of drowsiness, expect as well some ...Claritin and NyQuil can cause some common side effects when they are used together as they both are antihistamines and have the same mechanism of action. These include (1,2): Dry mouth. Dry eyes. Nausea. Constipation. Sedation. Dizziness or lightheadedness. Confusion.

Here are some of the uses and benefits of Nyquil and Benadryl: 1. Nyquil: Nyquil is a multi-symptom relief medication that contains acetaminophen, dextromethorphan, and doxylamine. It is commonly used to relieve symptoms related to cold and flu such as cough, congestion, headache, fever, and body aches.Allergy medications from different classes can typically be combined. For example, nasal steroids, like Flonase (fluticasone propionate), and oral decongestants, like Sudafed (pseudoephedrine), are safe to take together. Oral antihistamines, such as diphenhydramine (Benadryl) and cetirizine (Zyrtec), shouldn’t be taken together without a ... Drug interactions and side effects Combining NyQuil and Motrin may increase the risk of certain side effects. This particularly relates to the CNS depressant and anticholinergic effects of NyQuil. These may lead to heightened drowsiness, confusion, dry mouth or throat, and even blurred vision. Meanwhile, the NSAID component of Motrin puts users ... Nov 6, 2017 ... In patients older than 12 years of age: Nyquil™ (doxylamine succinate), Tavist (clemastine fumarate), chlorpheniramine maleate or Benadryl ... No. You can't. It isn't recommended. Mixing the Benadryl with the ingredient in NyQuil will cause extreme drowsiness and can also cause nausea/vomiting, dry mouth and throat, blurred vision, stomach cramping, and shakiness. Thank you for posting to r/medical!

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You took double the maximum dosage of diphenhydramine and 2 pills of Doxylamine. (idk how much Doxylamine is in each of your tablets but I'm going to assume you also took a double dose of Doxylamine.) And both of those medications when combined make each other more powerfull. Assuming 1 Doxylamine pill is one dosage and you took 2, then you ...Created a throwaway to ask this, not even sure why. But anyway. I took 25 mg of Benadryl last night followed by a dose of Nyquil because I've had a dry hacking cough for about a week and was afraid I wouldn't be able to sleep. I also took about 1 mg of melatonin. Normally either of the two will predictably knock me out.A doctor has provided 1 answer. Dr. Larry Xanthopoulos answered. Specializes in Pediatrics. Not best idea: Nyquil has an antihistamine in it already, and benadryl (diphenhydramine) is an antihistamine so you run the risk of overdosing on the antihistamine component. This may cause drowsiness, dryness and can possibly effect respiratory drive.Exploring Nyquil. Nyquil is a popular over-the-counter medication used to relieve symptoms associated with the common cold and flu. It’s important to understand its components, effects, and considerations before combining it with other substances like melatonin. Let’s dive into the world of Nyquil to gain a better understanding.Aug 18, 2023 · For diphenhydramine, it takes the body less time to get rid of half your dose — roughly 3 to 9 hours. This means you may feel the intended effects of doxylamine for a bit longer than diphenhydramine. But this also means you may experience side effects, such as lingering drowsiness, longer.

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 ...NyQuil and Weed NyQuil is a recognizable over-the-counter brand of medicine that temporarily relieves coughing, headaches, stuffy and runny nose, sore throat, fever, and sneezing. And while it can seem innocuous to combine NyQuil and cannabis, there are several reasons consumers should be cautious.Answer. Yes, oral antihistamines can be used in conjunction with nasal antihistamines, although current data suggests that the combination of the two is no more effective than using a nasal antihistamine as the sole treatment. Below, we discuss the data available in regard to whether or not there is benefit in combining an oral antihistamine ... 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 ... And if you’re thinking of toggling between the two drugs: Don’t. Taking Claritin and Benadryl on the same day is risky, since Claritin stays in your body for a pretty long time, says Robert ...Key points. Taking NyQuil products, which contain the sedating antihistamine doxylamine, with melatonin can increase sedation and have additive CNS depressant effects. There are a variety of Nyquil products currently available over-the-counter, but most contain the following active ingredients: Acetaminophen. Dextromethorphan. No. You can't. It isn't recommended. Mixing the Benadryl with the ingredient in NyQuil will cause extreme drowsiness and can also cause nausea/vomiting, dry mouth and throat, blurred vision, stomach cramping, and shakiness. Thank you for posting to r/medical! Benadryl has an average rating of 7.3 out of 10 from a total of 78 ratings on Drugs.com. 65% of reviewers reported a positive effect, while 18% reported a negative effect. Vicks Nyquil D Cold and Flu Nighttime Relief has an average rating of 8.2 out of 10 from a total of 5 ratings on Drugs.com. 60% of reviewers reported a positive effect, while ...Antidepressants and dextromethorphan or pseudoephedrine. It’s generally considered safe to take antidepressants while taking cold medicine. “However, cold/flu medications that contain dextromethorphan may increase the risk of a rare side effect called serotonin syndrome when taken with SSRIs and SNRIs,” Dr. Carter says.Oct 13, 2021 · Use of Benadryl and melatonin together on a regular basis is not recommended. In most cases, Benadryl (diphenhydramine) and melatonin should not be taken together. There isn't necessarily a 'drug interaction' between them, but both can cause sedation, and using them together could have additive effects. These additive effects could potentially ... Answer. There is no known interaction between Hyland's Cough & Mucus and Benadryl. They are considered safe to take together. Most Hyland's products, including the one you mentioned in your question, are homeopathic, and contain only very small amounts of their listed ingredients. Due to this, homeopathic products are …YouTube Music is taking another cue from Spotify with today’s launch of a set of personalized playlists that are essentially YouTube Music’s own take on Spotify’s “Daily Mixes.” Ea...

You took double the maximum dosage of diphenhydramine and 2 pills of Doxylamine. (idk how much Doxylamine is in each of your tablets but I'm going to assume you also took a double dose of Doxylamine.) And both of those medications when combined make each other more powerfull. Assuming 1 Doxylamine pill is one dosage and you took 2, then you ...

Benadryl is an antihistamine commonly used to relieve allergy symptoms such as sneezing, itching, and watery eyes. On the other hand, Nyquil is a combination medication that typically contains antihistamines, cough suppressants, pain relievers, and sometimes even decongestants. Feb 28, 2018 · Mixing Benadryl with alcohol can intensify these side effects and will impair a person’s daily functioning. This can be life-threatening if it involves certain activities, such as driving or ... There are 602 drugs known to interact with Vicks NyQuil Severe Cold & Flu (acetaminophen / dextromethorphan / doxylamine / phenylephrine), along with 15 disease interactions, and 2 alcohol/food interactions. Of the total drug interactions, 97 are major, 490 are moderate, and 15 are minor.Can you Mix Nyquil and benadryl - The Q&A wiki Is it safe to mix Benadryl and Nyquil? Whenever I've been having trouble falling asleep, I would use Nyquil, or I would Is it safe to mix Benadryl and Nyquil? - Yahoo! Answers Can i take Nyquil with Benadryl? ChaCha Answer: Benadryl is also an antihistamine so it is not recommended to take both ...No, it is not recommended to take Benadryl with NyQuil as they both contain antihistamines that work in the exact same way. Benadryl contains Diphenhydramine, …Exploring Nyquil. Nyquil is a popular over-the-counter medication used to relieve symptoms associated with the common cold and flu. It’s important to understand its components, effects, and considerations before combining it with other substances like melatonin. Let’s dive into the world of Nyquil to gain a better understanding.Here are some of the uses and benefits of Nyquil and Benadryl: 1. Nyquil: Nyquil is a multi-symptom relief medication that contains acetaminophen, dextromethorphan, and doxylamine. It is commonly used to relieve symptoms related to cold and flu such as cough, congestion, headache, fever, and body aches.Applies to: Ambien (zolpidem) and Vicks Nyquil D Cold and Flu Nighttime Relief (acetaminophen / dextromethorphan / doxylamine / pseudoephedrine) Using zolpidem together with doxylamine may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also …

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By Christina Jewett and Roni Caryn Rabin. Sept. 12, 2023. An advisory panel to the Food and Drug Administration agreed unanimously on Tuesday that a common decongestant ingredient used in many ... Benadryl has an average rating of 7.3 out of 10 from a total of 78 ratings on Drugs.com. 65% of reviewers reported a positive effect, while 18% reported a negative effect. Vicks Nyquil D Cold and Flu Nighttime Relief has an average rating of 8.2 out of 10 from a total of 5 ratings on Drugs.com. 60% of reviewers reported a positive effect, while ... Bottom Line – Benadryl vs Nyquil. Benadryl belongs to a group of drugs called Histamine H1 Antagonists. It works by blocking the effects of a substance released by the human body, called histamine, which is involved in allergies. It is mainly used to help reduce symptoms associated with allergies, such as – a runny nose and sneezing.Potential benefits of taking Benadryl and DayQuil together. Combining Benadryl and DayQuil may provide potential benefits in managing various symptoms associated with colds, flu, or allergies. Benadryl can help relieve allergy symptoms like sneezing, runny nose, and itching. DayQuil, on the other hand, can alleviate symptoms …NyQuil and Weed NyQuil is a recognizable over-the-counter brand of medicine that temporarily relieves coughing, headaches, stuffy and runny nose, sore throat, fever, and sneezing. And while it can seem innocuous to combine NyQuil and cannabis, there are several reasons consumers should be cautious.If you have a cold, you may experience a fever, headache, chills, or body aches. The best medication for this while on Prozac is Acetaminophen. There are no known interactions between acetaminophen and Prozac (Fluoxetine). There are, however, known drug interactions with non-steroidal anti-inflammatory drugs (NSAIDs) like Ibuprofen, …Answer. There is an interaction between one of the ingredients in Nyquil and Lexapro (escitalopram), considered to be major by most medical sources. Due to the interaction, it is recommended to avoid combining the two medications if there are other options available to you. Taking both increases the risk of a rare, but serious condition …NyQuil and Weed NyQuil is a recognizable over-the-counter brand of medicine that temporarily relieves coughing, headaches, stuffy and runny nose, sore throat, fever, and sneezing. And while it can seem innocuous to combine NyQuil and cannabis, there are several reasons consumers should be cautious. ….

A doctor has provided 1 answer. Dr. Larry Xanthopoulos answered. Specializes in Pediatrics. Not best idea: Nyquil has an antihistamine in it already, and benadryl (diphenhydramine) is an antihistamine so you run the risk of overdosing on the antihistamine component. This may cause drowsiness, dryness and can possibly effect …Feb 28, 2018 · Mixing Benadryl with alcohol can intensify these side effects and will impair a person’s daily functioning. This can be life-threatening if it involves certain activities, such as driving or ... Find patient medical information for Vicks NyQuil Severe Cold-Flu oral on WebMD including its uses, side effects and safety, interactions, pictures, warnings and user ratings.ALPRAZolam diphenhydrAMINE. Applies to: Xanax (alprazolam) and Benadryl (diphenhydramine) Using ALPRAZolam together with diphenhydrAMINE 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 …Aug 9, 2022 · 4. Anticholinergic medications. Anticholinergics are medications that block a chemical called acetylcholine in the nervous system. Acetylcholine is important for the functioning of your bladder, eyes, gut, and other organs. Common anticholinergic side effects include constipation, blurry vision, and confusion. Overview. In the vast majority of individuals, it is safe to take Allegra (fexofenadine) the same day as NyQuil, even though Allegra is an antihistamine and NyQuil contains an antihistamine. However, they generally should not be taken at the same time. At the very least, they should be separated from one another by at least four to six hours to ...U.S. stocks traded mixed this morning, with the Dow Jones dropping around 30 points on Tuesday. Following the market opening Tuesday, the Dow tra... U.S. stocks traded mixed this ...Created a throwaway to ask this, not even sure why. But anyway. I took 25 mg of Benadryl last night followed by a dose of Nyquil because I've had a dry hacking cough for about a week and was afraid I wouldn't be able to sleep. I also took about 1 mg of melatonin. Normally either of the two will predictably knock me out.Diphenhydramine (Benadryl, Advil PM, others). Doxylamine (NyQuil Cold & Flu, Nighttime Cold & Flu Relief, others). Chlorpheniramine (Chlor-Trimeton, Alka-Seltzer Plus Cold Medicine, others). 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. Created a throwaway to ask this, not even sure why. But anyway. I took 25 mg of Benadryl last night followed by a dose of Nyquil because I've had a dry hacking cough for about a week and was afraid I wouldn't be able to sleep. I also took about 1 mg of melatonin. Normally either of the two will predictably knock me out. Mix nyquil and benadryl, Common side effects of NyQuil include constipation, appetite loss, anxiousness, stomach upset and queasiness, according to Drugs.com. Severe side effects include urinary difficulti..., NyQuil chicken appeared in 2019, for example, on Reddit's "shittyfoodporn" forum. It caught the attention of some news outlets in January 2022, before going viral again in September 2022., Claritin and NyQuil can cause some common side effects when they are used together as they both are antihistamines and have the same mechanism of action. These include (1,2): Dry mouth. Dry eyes. Nausea. Constipation. Sedation. Dizziness or lightheadedness. Confusion., 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 …, Certain medications cannot be taken together, such as combining Benadryl and NyQuil. Since ibuprofen works differently than acetaminophen – the pain-relieving component in NyQuil – it is generally considered safe to take Advil and NyQuil together for short-term use. More about this combination below…. Just make sure you follow the ..., What Is Benadryl? Benadryl (diphenhydramine) is a sedating, first-generation antihistamine and will begin working within 15 to 30 minutes after taking a dose. Each dose lasts around 4-6 hours, with this time being extended in certain individuals (e.g. the elderly). This is why a 'hangover' effect is more common in older adults. Benadryl …, Key points. Taking NyQuil products, which contain the sedating antihistamine doxylamine, with melatonin can increase sedation and have additive CNS depressant effects. There are a variety of Nyquil products currently available over-the-counter, but most contain the following active ingredients: Acetaminophen. Dextromethorphan., In short, consuming NyQuil in large doses all at once can lead to severe side effects or, worse, poisoning or death. “People who eat the NyQuil-marinated chicken may experience acetaminophen ..., It is never safe to take multiple antihistamine medications such as Zyrtec and BENADRYL® or Claritin and BENADRYL® together. Combining BENADRYL® with other ..., Nyquil Cold & Flu (Acetaminophen, Chlorpheniramine, And Dextromethorphan) received an overall rating of 8 out of 10 stars from 2 reviews. See what others have said about Nyquil Col..., Yes, you can take Benadryl (diphenhydramine) and Dayquil together as they do not interact. However, most people take Dayquil to alleviate cough/cold symptoms without sedation, and taking Benadryl would defeat that purpose (since Benadryl tends to cause drowsiness)., Applies to: Benadryl (diphenhydramine) and meclizine. Using diphenhydrAMINE together with meclizine may increase side effects such as drowsiness, blurred vision, dry mouth, heat intolerance, flushing, decreased sweating, difficulty urinating, abdominal cramping, constipation, irregular heartbeat, confusion, and memory problems., Read this article to find out about QUIKRETE® Zip and Mix Repair Mortar, which comes in a pouch for easy mixing. Expert Advice On Improving Your Home Videos Latest View All Guides ..., Benadryl has an average rating of 7.3 out of 10 from a total of 78 ratings on Drugs.com. 65% of reviewers reported a positive effect, while 18% reported a negative effect. Vicks Nyquil D Cold and Flu Nighttime Relief has an average rating of 8.2 out of 10 from a total of 5 ratings on Drugs.com. 60% of reviewers reported a positive effect, while ..., dextromethorphan diphenhydrAMINE. Applies to: Vicks DayQuil Severe Cold & Flu (acetaminophen / dextromethorphan / guaifenesin / phenylephrine) and Benadryl (diphenhydramine) Using dextromethorphan together with diphenhydrAMINE may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some …, Can i take benadryl (diphenhydramine) and nyquil together? A doctor has provided 1 answer. Dr. Paul Grin answered. Specializes in Pain Management. You can, but: Not recommended due to drug interactions. Both drugs increase sedation and drowsiness. Dr Kent agreed. Answered 5/3/2021. 4.5k views. , The main difference is that DayQuil is a non-drowsy formula with the decongestant phenylephrine to help treat your cold or flu symptoms during the day, while many NyQuil products contain a sedating antihistamine and can help you sleep at night. In addition, some NyQuil products also contain 10% alcohol, but alcohol is not found in …, Mixing Benadryl with alcohol can intensify these side effects and will impair a person’s daily functioning. This can be life-threatening if it involves certain activities, such as driving or ..., Shop Collection. Amoxicillin, a member of the penicillin family, is a broad-spectrum antibiotic that exhibits potent activity against a wide range of bacteria. It belongs to the beta-lactam class of antibiotics and works by inhibiting the synthesis of bacterial cell walls, leading to their destruction. View Catalogue., The main types are: Drug-drug interaction. This is when a medication reacts with one or more other drugs. For example, taking a cough medicine ( antitussive) and a drug to help …, Oct 18, 2023 · Tylenol can be taken on its own, but there are many multi-symptom cold & flu remedies that also contain acetaminophen as an active ingredient. These include: Alka-Seltzer Plus Cold & Flu. Contac Cold + Flu. Coricidin HBP Cold & Flu. Equate Cold & Flu Multi-Symptom Relief. Mucines Cold & Flu. Robitussin Multi-Symptom Cough Cold + Flu. , There are 602 drugs known to interact with Vicks NyQuil Severe Cold & Flu (acetaminophen / dextromethorphan / doxylamine / phenylephrine), along with 15 disease interactions, and 2 alcohol/food interactions. Of the total drug interactions, 97 are major, 490 are moderate, and 15 are minor., We would like to show you a description here but the site won’t allow us., Answer. It is not safe to take ZzzQuil with NyQuil as both contain sedating "first generation" antihistamines. Using both together would be considered a therapeutic duplication and can increase the risk of side effects. ZzzQuil contains diphenhydramine, the same active ingredient in Benadryl. NyQuil contains doxylamine, also a sedating "first ..., May 21, 2021 · Taking both can lead to acetaminophen toxicity and liver failure. Hi Mary and thanks for writing to us. Tylenol (or by the generic acetaminophen) is a commonly used over-the- counter drug that has been used for decades to help relieve pain and fever. NyQuil is a combination medication used to treat a handful of cough and cold symptoms. , Benadryl is an antihistamine commonly used to relieve allergy symptoms such as sneezing, itching, and watery eyes. On the other hand, Nyquil is a combination medication that typically contains antihistamines, cough suppressants, pain relievers, and sometimes even decongestants. , dextromethorphan diphenhydrAMINE. Applies to: Vicks DayQuil Severe Cold & Flu (acetaminophen / dextromethorphan / guaifenesin / phenylephrine) and Benadryl (diphenhydramine) Using dextromethorphan together with diphenhydrAMINE may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some …, By Christina Jewett and Roni Caryn Rabin. Sept. 12, 2023. An advisory panel to the Food and Drug Administration agreed unanimously on Tuesday that a common decongestant ingredient used in many ..., The main types are: Drug-drug interaction. This is when a medication reacts with one or more other drugs. For example, taking a cough medicine ( antitussive) and a drug to help …, Taking Xanax and Benadryl together can intensify side effects like dizziness, fatigue, drowsiness, inability to. concentrate, and lack of coordination. Combining the two can be especially dangerous for the elderly. Like many drug reactions, the effects of either medication can be intensified, or their combined side effects could cause a ..., Sep 28, 2019 · cyclobenzaprine doxylamine Using cyclobenzaprine together with doxylamine may increase side effects such as drowsiness, blurred vision, dry mouth, heat intolerance, flushing, decreased sweating, difficulty urinating, abdominal cramping, constipation, irregular heartbeat, confusion, and memory problems. , Phenylephrine — found in drugs including Sudafed PE, Vicks Nyquil Sinex Nighttime Sinus Relief and Benadryl Allergy Plus Congestion — is the most popular oral decongestant in the United States ..., diphenhydrAMINE gabapentin. Applies to: Benadryl (diphenhydramine) and gabapentin. Using diphenhydrAMINE together with gabapentin 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.