Dayquil and mucinex dm together

Applies to: bupropion. Using buPROPion and nicotine together can cause an increase in blood pressure. This can cause dizziness, confusion, uneven heartbeats, and chest pain. If you take both medications together, tell your doctor if you have any of these symptoms. You may need a dose adjustment or need your blood pressure checked more often if ...

Dayquil and mucinex dm together. Applies to: Mucinex DM Maximum Strength (dextromethorphan / guaifenesin) and Benadryl (diphenhydramine) Using dextromethorphan 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 ...

Mucinex (Guaifenesin) Mucinex (guaifenesin) is generally considered OK to use. It can help thin out excess mucus and relieve chest congestion.​​ Ibuprofen/Naproxen. Both ibuprofen and naproxen are considered NSAID (non-steroidal anti-inflammatory) medications. They are considered to be safe to take with Adderall.

Benzonatate is a prescription, non-narcotic antitussive medication. It numbs the airways, the air sacs in the lungs, and the lining of the lungs. It's FDA-approved for adults and children over 10 years old. You can take up to 600 mg daily, divided into three doses or as otherwise recommended by your healthcare provider. Applies to: Mucinex DM (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with dextromethorphan. Swallow the whole or split tablet without crushing or chewing. Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion. Improper use of this ... Vicks DayQuil Cough DM + Congestion is a non-drowsy daytime medicine that coats and soothes your throat and is specially formulated to relieve cough, chest congestion, nasal congestion, and thin and loosen mucus so you can power through your day. Vicks DayQuil is the #1 pharmacist recommended nighttime cough, cold & flu brand*. Shop Products. Yes, Mucinex and Nyquil can be taken together because they contain different ingredients, but Mucinex DM and Nyquil should not be taken together because they share a common ingredient, dextromethorphan. Instead of taking Mucinex DM and Nyquil together you should just take Nyquil. Mucinex contains guaifenesin which is an expectorant and its main purpose is to thin out the mucus in your airways ...Mixing Mucinex and DayQuil together. Mucinex is a Brand name for a medication containing guaifenesin as an active ingredient that is used as expectorant for relieving the symptoms of cough and mucus in the chest due to flu, colds or hay fever. This drug reduces congestion in chest and makes coughs more productive by thinning mucus in the lungs ...Mucinex DM is an over-the-counter medication used to alleviate coughing and chest congestion caused by the common cold, infections, or allergies. Its dual action formula contains dextromethorphan (a cough suppressant) and guaifenesin (an expectorant). Dextromethorphan works on our brain centers responsible for triggering a cough reflex, …

Bromfed DM, brompheniramine / dextromethorphan / pseudoephedrine, Mucinex D, Vicks Dayquil Cold & Flu Relief, Promethazine VC with Codeine Images Capmist DM dextromethorphan 30 mg / guaifenesin 400 mg / pseudoephedrine 30 mg (CAP DM)I’m sure I’m not the only one who had a minor meltdown on seeing that Slack had finally added the Connect feature it announced in October. I’m a firm believer that there are alread...Applies to: Theraflu Daytime Severe Cold & Cough (acetaminophen / dextromethorphan / phenylephrine) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of ...Nov 22, 2022 · Additionally, you could skip DayQuil altogether and only choose over-the-counter products with single drugs that you need to help treat your symptoms (e.g., Tylenol for aches/pains, Sudafed for nasal congestion, Mucinex for chest congestion, etc...). The most important thing to remember when choosing over-the-counter cough/cold products is to ... This potential interaction is not widely recognized. The resultant serotonin syndrome can be life-threatening. Symptoms may include confusion, agitation, diarrhea, nausea or vomiting, rapid heart ...

sore throat. headaches. congestion. cough. sinus pressure. minor body aches. This medication works quickly to provide daytime relief for colds and flu. Temporary relief from these conditions lasts ...What is Ed A-Hist DM? Chlorpheniramine is an antihistamine. Dextromethorphan is a cough suppressant. Phenylephrine is a decongestant.. Ed A-Hist DM is a combination medicine used to treat cough, runny or stuffy nose, sneezing, itching, and watery eyes caused by allergies, the common cold, or the flu.. Ed A-Hist DM will not treat a cough that is caused by smoking, asthma, or emphysema.The Guinness World record attempt spanned races, nationalities, age, and identities. Who knew a unibrow could be such a popular look? On Thursday (July 7), some 5,000 people donned...For example, taking DayQuil and Mucinex DM together could result in too much dextromethorphan in your system which can cause side effects such as dizziness or drowsiness. Similarly, combining Dayquil and a sinus medication such as Flonase can lead to too much decongestant in your body which can cause side effects like high blood pressure or ... Applies to: Vicks Dayquil Cold & Flu Relief (acetaminophen / dextromethorphan / phenylephrine) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol ... Discover the best e-commerce development company in Ahmedabad. Browse our rankings to partner with award-winning experts that will bring your vision to life. Development Most Popul...

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Mucinex contains guaifenesin, an expectorant, which thins and loosens mucus. This is most helpful if you have a productive cough. A productive cough is one that brings up mucus. Mucinex thins and loosens the mucus to help push it upward and out. Robitussin also contains the ingredient dextromethorphan, which is a cough suppressant.Using buPROPion with alcohol may increase the risk of uncommon side effects such as seizures, hallucinations, delusions, paranoia, mood and behavioral changes, depression, suicidal thoughts, anxiety, and panic attacks. On the other hand, sudden withdrawal from alcohol following regular or chronic use can also increase your risk of seizures ...Can i take musinex md, dayquill and ibprofen together in one day? A doctor has provided 1 answer. Dr. Alan Ali answered. Specializes in Psychiatry. If you are not on other medications that cause dizziness and not drinking alcohol , then occasional nyquil is ok. Answered Sep 28, 2016. 5.7k views. Thank.Using dextromethorphan together with promethazine 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. You should avoid or limit the use of alcohol while being treated with these ...Applies to: Mucinex DM (dextromethorphan / guaifenesin) and guanfacine. Using dextromethorphan together with guanFACINE 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.

Dayquil Cold and Flu relief actually contains the same cough suppressant as Mucinex DM (dextromethorphan). So, you would not take the two together.You can take plain Mucinex, which contains an expectorant and no cough suppressant, with Dayquil Cold and Flu/multi-symptom relief.Mucinex DM contains a larger amount of the cough suppressant (30 mg ...The good news is that in most cases, taking Mucinex and Zyrtec together is generally safe. Mucinex is an expectorant that helps loosen mucus in the airways, while Zyrtec is an antihistamine used to treat allergies. Since they target different symptoms, combining them can provide effective relief for individuals experiencing both congestion and ...Bromfed DM, brompheniramine / dextromethorphan / pseudoephedrine, Mucinex D, Vicks Dayquil Cold & Flu Relief, Promethazine VC with Codeine. Related Stories. How Would an FDA Ban on Popular Cold Meds Affect Americans? FDA Panel Says Common OTC Decongestant, Phenylephrine, Is UselessYes, Mucinex and Nyquil can be taken together because they contain different ingredients, but Mucinex DM and Nyquil should not be taken together because they share a common ingredient, dextromethorphan. Instead of taking Mucinex DM and Nyquil together you should just take Nyquil. Continue readingDr. Susan Rhoads. 12 hours: Best is to follow instructions on the box. Do not mix this medications, since some components can be the same, therefore increasin.The plain Mucinex without the decongestant (DM) is safe to take. No. Mucinex DM is not safe to take while pregnant. The plain Mucinex without the decongestant (DM) is safe to take. The "DM ...Swallow the whole or split tablet without crushing or chewing. Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion. Improper use of this ...Applies to: Mucinex DM (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with dextromethorphan.This list may not describe all possible interactions. Give your health care provider a list of all the medicines, herbs, non-prescription drugs, ...Yes: Active ingredients in dayquil include: acetaminophen 325 mg dextromethorphan hbr 10 mg phenylephrine hcl 5 mg fd&c red no. 40, fd&c yellow no. 6, gelatin, glycerin, polyethylene glycol, povidone, propylene glycol, purified water, sorbitol special, titanium dioxide mucinex dm has: dextromethorphan hbr 30 mg guaifenesin 600 mg. 40 mg total ...32 years experience. Yes: Active ingredients in dayquil include: acetaminophen 325 mg dextromethorphan hbr 10 mg phenylephrine hcl 5 mg fd&c red no. 40, fd&c yellow no. 6,... Read More. Created for people with ongoing healthcare needs but benefits everyone. Learn how we can help.

Indications. • Short-term relief of coughs caused by minor throat or lung irritation (e.g., common cold) • Loosens and breaks up mucus in the airways (chest congestion) • Short …

The study uses data from the FDA. It is based on dextromethorphan hydrobromide; guaifenesin and zinc gluconate (the active ingredients of Mucinex dm and Zicam, respectively), and Mucinex dm and Zicam (the brand names). Other drugs that have the same active ingredients (e.g. generic drugs) are not considered. Dosage of drugs is not considered in ... Summary: Drug interactions are reported among people who take Dayquil and Mucinex. Common interactions among females include sinusitis and sleep apnoea syndrome. Common interactions among males include pneumonia and blood pressure increased. The phase IV clinical study analyzes what interactions people have when they take Dayquil and Mucinex ... From https://www.justanswer.com/ythealth32dexter: Doctor: Can I take a Mucinex DM and also use Dayquil during the same time?Dr. Abby: US Board Certified MD: ...Customer: Can I take Mucinex DM and DayQuil together? Doctor's Assistant: What over-the-counter and prescription medications are you currently taking? Customer: Atorvastatin - 10mg and Avkare - 60 mg Also - dayquil and nyquil Doctor's Assistant: What medications do you take daily? Are you allergic to any medications? Customer: Atorvastatin & Avkare - daily - dayquil and nyquil daily since i've ...Applies to: Mucinex DM (dextromethorphan / guaifenesin) and Sudafed PE Severe Cold (acetaminophen / diphenhydramine / phenylephrine) Using dextromethorphan together with diphenhydrAMINE may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also experience ...Avoid Double Dosing: Since both medications contain similar active ingredients such as dextromethorphan (DM), taking them together increases the risk of exceeding recommended dosages. Monitor Sedative Effects: Both Mucinex DM and Nyquil can cause drowsiness or sedation individually. Taking them simultaneously may intensify this effect.4 days ago · 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, aspirin ...

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Applies to: Mucinex DM (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with dextromethorphan.Mucinex can be taken along with a decongestant if the individual is experiencing nasal congestion and needs it. However, since this medicine does not contain a decongestant, it might be more advisable to use Mucinex D instead, if both an expectorant and a decongestant are needed, rather than pairing Mucinex with another company's decongestant 1.severe headache; or. severe dizziness or anxiety, feeling like you might pass out. Common side effects of Coricidin HBP Chest Congestion and Cough may include: dizziness, drowsiness; sleep problems ( insomnia ); diarrhea; or. feeling nervous, restless, anxious, or irritable. This is not a complete list of side effects and others may occur.Mucinex can be taken along with a decongestant if the individual is experiencing nasal congestion and needs it. However, since this medicine does not contain a decongestant, it might be more advisable to use Mucinex D instead, if both an expectorant and a decongestant are needed, rather than pairing Mucinex with another company's decongestant 1.Benzonatate is a medication commonly prescribed for cough relief. While it can be highly effective in treating cough symptoms, it's essential to be aware of potential drug interactions that can occur. Mixing certain drugs with benzonatate can lead to adverse side effects and pose serious health risks. This comprehensive guide aims to provide you with crucial information about drugs that should ...Summary: Drug interactions are reported among people who take Mucinex and Meloxicam. Common interactions among females include constipation and insomnia. Common interactions among males include renal failure and chronic kidney disease. The phase IV clinical study analyzes what interactions people have when they take Mucinex and Meloxicam together.Taking steroid drugs in any form - orally, topically, through an inhaler or IV - can worsen glaucoma for these patients. Steroids applied closest to the eye carry the highest risk. Drugs taken by mouth or through an IV enter the eye through the bloodstream — about as close to the eye as you can get. But skin creams and inhalers are also ...Apr 8, 2024 · Yes, Mucinex and Nyquil can be taken together because they contain different ingredients, but Mucinex DM and Nyquil should not be taken together because they share a common ingredient, dextromethorphan. Instead of taking Mucinex DM and Nyquil together you should just take Nyquil. Continue reading For example, taking DayQuil and Mucinex DM together could result in too much dextromethorphan in your system which can cause side effects such as dizziness or drowsiness. Similarly, combining Dayquil and a sinus medication such as Flonase can lead to too much decongestant in your body which can cause side effects like high blood … ….

A doctor has provided 1 answer. Dr. Amrita Dosanjh answered. Specializes in Pediatric Allergy and Asthma. Mgt: They can be used together. Nasal saline rinses may also help to alleviate the congestion. Dr Hegab and another doctor agreed. Answered 6/20/2019. 2.2k views. Thank.dextromethorphan food. Applies to: Mucinex DM (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated ...Applies to: Mucinex DM (dextromethorphan / guaifenesin) and guanfacine. Using dextromethorphan together with guanFACINE 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.From https://www.justanswer.com/ythealth32dexter: Doctor: Can I take a Mucinex DM and also use Dayquil during the same time?Dr. Abby: US Board Certified MD: ...Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency. SOC 2 Type 2Certified. can you take mucinex (guaifenesin) dm and allegra together?: Yes: If tolerated separately, ok to take together. There are no signi.Key Takeaways. Mucinex relieves cold and flu-related chest congestion and cough by thinning and loosening mucus. Nyquil is a multi-symptom relief medication containing ingredients like acetaminophen, dextromethorphan, and doxylamine succinate, designed for nighttime use to alleviate cold and flu symptoms.Applies to: Mucinex DM (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with …The plain Mucinex without the decongestant (DM) is safe to take. No. Mucinex DM is not safe to take while pregnant. The plain Mucinex without the decongestant (DM) is safe to take. The "DM ... Dayquil and mucinex dm together, Applies to: Mucinex DM (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with dextromethorphan. , Key points. There are several safe cold/flu medications safe with Celexa (citalopram), and others you should use caution with. Safe medications include Tylenol (acetaminophen), antihistamines, and Mucinex. Dextromethorphan, NSAIDs (e.g. ibuprofen), and Sudafed should be used cautiously. Thanks so much for reaching out!, Applies to: amitriptyline and Mucinex DM (dextromethorphan / guaifenesin) Using amitriptyline together with dextromethorphan can increase the risk of a rare but serious condition called the serotonin syndrome, which may include symptoms such as confusion, hallucination, seizure, extreme changes in blood pressure, increased heart rate, fever ..., Additionally, you could skip DayQuil altogether and only choose over-the-counter products with single drugs that you need to help treat your symptoms (e.g., Tylenol for aches/pains, Sudafed for nasal congestion, Mucinex for chest congestion, etc...). The most important thing to remember when choosing over-the-counter cough/cold products is to ..., What is Nyquil Cold and Flu? Acetaminophen is a pain reliever and fever reducer.. Dextromethorphan is a cough suppressant. It affects the cough reflex in the brain that triggers coughing. Doxylamine is an antihistamine that reduces the effects of the natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose., Both Nyquil and Mucinex DM are commonly used to alleviate symptoms of cold, flu, and congestion. Nyquil contains ingredients such as acetaminophen, dextromethorphan, and doxylamine succinate, which help relieve pain, suppress cough, and induce sleep. On the other hand, Mucinex DM contains dextromethorphan and guaifenesin, which work …, Yes, it is safe to take Tylenol ( acetaminophen) and Mucinex ( guaifenesin) together. There is no drug interaction between them. In fact, there are a number of products on the market that contain both. These products include: Ideally, you should take a product that only contains the drugs you need to help with your symptoms (i.e. if you only ..., Applies to: Mucinex DM (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with dextromethorphan., Vicks DayQuil Cough DM + Congestion soothes your throat and is specially formulated to relieve cough, chest congestion, nasal congestion, and thin and loosen mucus so you can power through your day. DayQuil™ VapoCOOL SEVERE Maximum Strength Cold & Flu + Congestion Daytime Relief Caplets vaporizes your cold symptoms with a cooling, soothing ..., The plain Mucinex without the decongestant (DM) is safe to take. No. Mucinex DM is not safe to take while pregnant. The plain Mucinex without the decongestant (DM) is safe to take. The "DM ..., We would like to show you a description here but the site won't allow us., Common side effects of DayQuil Cold and Flu may include: dizziness, weakness, mild headache; diarrhea, upset stomach; dry mouth, nose, or throat; feeling nervous, restless, irritable, or anxious; or. sleep problems (insomnia). This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects., dextromethorphan traMADol. Applies to: Mucinex DM (dextromethorphan / guaifenesin) and tramadol. Using dextromethorphan together with traMADol can increase the risk of a rare but serious condition called the serotonin syndrome, which may include symptoms such as confusion, hallucination, seizure, extreme changes in blood pressure, increased ..., Applies to: Mucinex DM Maximum Strength (dextromethorphan / guaifenesin) Alcohol can increase the nervous system side effects of dextromethorphan such as dizziness, drowsiness, and difficulty concentrating. Some people may also experience impairment in thinking and judgment. You should avoid or limit the use of alcohol while being treated with ..., Drugs.com provides accurate and independent information on more than 24,000 prescription drugs, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. Data sources include Micromedex (updated 1 Apr 2024), Cerner Multum™ (updated 21 Apr 2024), ASHP (updated 10 Apr 2024) and others., Applies to: Mucinex DM (dextromethorphan / guaifenesin) and Advil PM (diphenhydramine / ibuprofen) Using dextromethorphan 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 ..., Answer. Mucinex (guaifenesin), a commonly used over-the-counter expectorant, can be safely taken in combination with Sudafed (pseudoephedrine), a nasal decongestant. There are no known interactions between the two medications. In fact, there are a variety of over-the-counter products that combine both ingredients into a single product for ease ..., Swallow the whole or split tablet without crushing or chewing. Drink plenty of fluids while taking this medication. Fluids will help to break up mucus and clear congestion. Improper use of this ..., There is no known interaction between Eliquis ( apixaban) and Mucinex ( guaifenesin ). They are considered safe to take together. [1] Additionally, Mucinex does not affect blood coagulation or alter bleeding time, so it, in most cases, is safe to take with anticoagulants and antiplatelets. In terms of the dose of Mucinex that is safe to take ..., Dr said get regular dayquil or mucinex for my 10 1/2 year old. he is 5 foot 6 and 136 pounds is it safe to give him one that the active ingredients in each 20 ml are: dextromethorphan 20mg and guaifenesin 400mg? if it is ok is 20ml the right dose? A doctor has provided 1 answer. is it okay to take mucinex (guaifenesin) d and nyquil/dayquil ..., Taking DayQuil and Mucinex DM together can also result in common side effects associated with each medication individually. Some individuals may experience drowsiness, dizziness, dry mouth, or an upset stomach after taking these medications. It's worth noting that everyone reacts differently to medication combinations., We would like to show you a description here but the site won’t allow us., Summary: Drug interactions are reported among people who take Mucinex dm and Allegra. Common interactions among females include injection site bruising and injection site mass. Common interactions among males include dysgeusia and hypotension. The phase IV clinical study analyzes what interactions people have when they take Mucinex dm and ..., Dayquil Severe Cold & Flu (Oral) received an overall rating of 4 out of 10 stars from 27 reviews. See what others have said about Dayquil Severe Cold & Flu (Oral), including the ef..., Mucinex DM should not be taken at the same time as 'Tylenol Cold And Head Congestion' as they both contain guaifenesin. Taking both medications together is a therapeutic duplication and could potentially increase the risk of side effects. It is important to always read the labels of the drugs you are looking to take, especially over-the-counter ..., Time: 5.01.2012 nick: whoidicha Can i take vicks dayquil sinus allegra together Mucinex DM and Vicks Dayquil Daytime Cold/Flu Drug Interactions. Vicks DayQuil Sinex Daytime Sinus Relief LiquiCaps - Vicks Can I take Claritin (loratadine. in your Advil Cold and Sinus or if you have loratadine with decongestant, do not..., When you post on Twitter, every user that follows your Twitter account can see the message. Alternatively, direct messages on the site are private messages between two users that n..., What is Nyquil Cold and Flu? Acetaminophen is a pain reliever and fever reducer.. Dextromethorphan is a cough suppressant. It affects the cough reflex in the brain that triggers coughing. Doxylamine is an antihistamine that reduces the effects of the natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose., Answer. Mucinex (guaifenesin), a commonly used over-the-counter expectorant, can be safely taken in combination with Sudafed (pseudoephedrine), a nasal decongestant. There are no known interactions between the two medications. In fact, there are a variety of over-the-counter products that combine both ingredients into a single product for ease ..., They can be used together. Mucinex-D contains a combination of both drugs (guaifenesin, pseudoephedrine) in one product, and can be purchased at the pharmacy. ... Mucinex (guaifenesin) Mucinex DM (guaifenesin; dextromethorphan) All other Mucinex products already contain a decongestant. Taking too high of a dose of a …, Potential Risks and Side Effects. While taking Mucinex D and Nyquil together is generally safe, there are some potential risks and side effects to be aware of: Increased drowsiness: Both Mucinex D and Nyquil can cause drowsiness as side effects. Taking them together may intensify this effect, making you feel excessively sleepy or fatigued., Applies to: Mucinex DM (dextromethorphan / guaifenesin) and guanfacine. Using dextromethorphan together with guanFACINE 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., What is Ed A-Hist DM? Chlorpheniramine is an antihistamine. Dextromethorphan is a cough suppressant. Phenylephrine is a decongestant.. Ed A-Hist DM is a combination medicine used to treat cough, runny or stuffy nose, sneezing, itching, and watery eyes caused by allergies, the common cold, or the flu.. Ed A-Hist DM will not treat a cough that is caused by smoking, asthma, or emphysema.