Can i take zyrtec and nyquil together

Usually yes, but why: Taking the two together though usually does not offer much in the way of additional benefit for nasal allergies. Created for people with ongoing healthcare needs but benefits everyone. ... Can I take zyrtec and nyquil together. Can I take allegra and zyrtec together. Can I take zyrtec and rhinocort together.

Can i take zyrtec and nyquil together. If you have high blood pressure, thyroid problem or diabetes, yo should not take it. Don't take it regularly under any circumstances. Yes: No problem at all. Possible, but: Zyrtec (cetirizine), is an antihistamine. Mucinex d (guaifenesin and Pseudoephedrine 120mg) is a combination of a medication.

If you plan to take Zyrtec with Nyquil, it is essential to read the labels carefully and follow the recommended dosages.

I'm 30 weeks. I heard nyquil is bad. What about zquil. I have been sick all week and had a Dr apt today and doc said I can take psuedofed and benedryl just make sure its original. I also take zyrtec . You can take zyrtec, i used it through three pregnancies, doc okayed it, kids are healthy.Yes, Zyrtec ( cetirizine) and Singulair ( montelukast) can safely be taken together. There is no drug interaction between them. Both drugs work via different mechanisms and do not interfere with one another. In fact, several studies show that combining an antihistamine, like Zyrtec, and a leukotriene receptor antagonist (LTRA), like Singulair ...Is it safe to take promethazine and benzonatate together? my pa c prescribed them, but the pharmacist says they should not be taken together. A doctor has provided 1 answer. can i take promethazine dm and nyquil together?: NyQuil: NyQuil contains antihistamines, acetaminophen, a cough suppre.No. Nyquil has 500 mg of acetaminophen, and fioricet contains 325 mg acetaminophen. Taking these together would be an 825 mg dose. Common dosages are 325, 500 and 650 mg. diphenhydrAMINE cetirizine. Applies to: ZzzQuil (diphenhydramine) and Zyrtec (cetirizine) Using cetirizine together with diphenhydrAMINE may increase side effects such as dizziness, drowsiness, and difficulty concentrating. Some people, especially the elderly, may also experience impairment in thinking, judgment, and motor coordination. dextromethorphan hydrOXYzine. Applies to: Vicks NyQuil Severe Cold & Flu (acetaminophen / dextromethorphan / doxylamine / phenylephrine) and hydroxyzine. Using dextromethorphan together with hydrOXYzine may increase side effects such as dizziness, drowsiness, confusion, and difficulty concentrating. Some people, especially the elderly, may also ...

Doxylamine is a 'first-generation' antihistamine and phenylephrine is a decongestant (although it is less potent than pseudoephedrine). I'd recommend taking the combination of Zyrtec-D and Tylenol over a product like NyQuil Severe though since Zyrtec-D is long-acting and relatively mild in terms of sedation the sedation it causes.The FDA is cautioning parents about the dangerous health consequences of kids taking more than one medication at a time, especially if those meds have the same active ingredient. The danger happens when children are given over-the-counter drugs for both colds and allergies at the same time. Parents run the risk of providing a double dose of an ...Medicine safety. Tell your doctor or pharmacist if you're taking any other medicines, including herbal remedies, vitamins or supplements. Page last reviewed: 21 December 2021. Next review due: 21 December 2024. NHS medicines information on possible interactions with molnupiravir and other medicines, herbal remedies and supplements.MSNcetirizine food. Applies to: Zyrtec (cetirizine) Alcohol can increase the nervous system side effects of cetirizine 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 cetirizine. Dr. Michael Zacharisen answered. Specializes in Allergy and Immunology. Yes: While nyquil contains multiple ingredients that also includes an antihistamine, the addition of 1 Allegra (fexofenadine) (also an antihistamine) will not be harmful. Answered 10/20/2020. Iron and green tea. You need iron to help distribute oxygen to cells—it's vital for your energy. But if you mix it with green tea, black tea, or curcumin supplements, your body won't absorb the mineral. It's OK to drink green tea beverages—such as matcha —just don't do it with your iron supplements, Dr. Cooperman says; spread the ...

A doctor has provided 1 answer. can i take benadryl (diphenhydramine) and nyquil together?: You can, but: Not recommended due to drug interactions. Both drugs inc.Can You Take Zicam and Nyquil Together. Before we delve into the details, let’s establish some background information. Zicam is an over-the-counter medication commonly used to relieve nasal congestion and cold symptoms. On the other hand, Nyquil is a popular over-the-counter cold and flu medication that helps alleviate symptoms such as ...Those should not be mixed with narcotics. The alcohol free types are ok. Also make sure there is no tylenol (acetaminophen )in both. Many narcotics and some of the nyquil mixes have it. No: These drugs will have a synergistic effect and so can increase respiratory depression. Talk to your local provider and together come up with plan for short ...I'm 30 weeks. I heard nyquil is bad. What about zquil. I have been sick all week and had a Dr apt today and doc said I can take psuedofed and benedryl just make sure its original. I also take zyrtec . You can take zyrtec, i used it through three pregnancies, doc okayed it, kids are healthy.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.Zyrtec (cetirizine) Clindamycin disease interactions. There are 4 disease interactions with clindamycin which include: colitis; prematurity; liver disease; ... Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. Unknown: No interaction information available.

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I take Zyrtec (certirizine) for allergies at bedtime and now I am taking Trazodone for sleep issues and anxiety .Can I take both of these together at bedtime . Certirizine makes me drowsy , that's why I take at bedtime. Answer. There are no drug interactions between trazodone (Desyrel) and cetirizine (Zyrtec).Anyone over 12 years of age can take two LiquiCaps or 30 ml of the NyQuil Liquid every six hours, but you must not exceed four doses over 24 hours. This medication has three active ingredients: acetaminophen, which relieves pain, dextromethorphan HBr, a cough suppressant, and doxylamine succinate, an antihistamine.Answer. The use of Abilify (aripiprazole) and Benadryl (diphenhydramine) may require monitoring as there is a moderate drug interaction between these two medications. There are actually two potential interactions between Abilify and Benadryl: Both can cause CNS (central nervous system) depression and can cause additive sedation and dizziness.Mucinex (guaifenesin) and Sudafed (pseudoephedrine) can safely be taken together. In fact, there are a variety of medications that combine both active ingredients. These two meds are used to treat ...Antihistamines. Antihistamines can be safely taken with a Prescription as they don’t really interact with one another. Common antihistamines include Benadryl, Claritin, Allegra, Zyrtec etc. Nasal decongestants. Nasal decongestants like Pseudoephedrine and Phenylephrine can be used along with Prednisone. However, the …Paxil is an SSRI (selective serotonin reuptake inhibitor) that does have a few drug interactions and considerations with over-the-counter medication that are important to be aware of. There are many that are safe to take. They include: Antihistamines (e.g. Claritin, Allegra, Benadryl, Zyrtec etc...) Tylenol (acetaminophen) Mucinex (guaifenesin ...

If you took Zyrtec and Mucinex Fast-Max six hours apart, the worst you are likely to experience is mild side effects, like added drowsiness and dry mouth. While not all Mucinex Fast-Max products contain an antihistamine, some do. If the specific Mucinex product you are talking about does (e.g., Maximum Strength Fast-Max Night Cold & Flu), it ...2 days ago · Paxil is an SSRI (selective serotonin reuptake inhibitor) that does have a few drug interactions and considerations with over-the-counter medication that are important to be aware of. There are many that are safe to take. They include: Antihistamines (e.g. Claritin, Allegra, Benadryl, Zyrtec etc...) Tylenol (acetaminophen) Mucinex (guaifenesin ... dextromethorphan food. Applies to: Vicks DayQuil Severe Cold & Flu (acetaminophen / dextromethorphan / guaifenesin / 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.Yes, you can. Penicillin is a broad spectrum antibiotic, while NyQuil is a combination of antihistamine, cough suppressant, acetaminophen and decongestant. There are no adverse reactions when ...Applies to: Vicks Children's NyQuil Cold & Cough (chlorpheniramine / dextromethorphan) Alcohol can increase the nervous system side effects of chlorpheniramine 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 ...Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. Unknown: No interaction information available. Further information. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.Drowsiness: One of the most common side effects of Nyquil is drowsiness. The medication contains an antihistamine called doxylamine, which can cause drowsiness and sedation. It's important to avoid driving or operating heavy machinery after taking Nyquil to ensure your safety. Dry mouth and throat: Nyquil may also lead to dryness in the mouth ...Sotalol Interactions. There are 607 drugs known to interact with sotalol, along with 20 disease interactions, and 3 alcohol/food interactions.Of the total drug interactions, 228 are major, 350 are moderate, and 29 are minor.Specializes in Family Medicine. A nasal spray like Afrin and Nyquil together could potentially ramp up your sympathetic nervous system. In other words, blood pressure and heart rate can increase. Try to use the drug with the least amount of ingredients that target the worse symptoms, such as Afrin for runny nose or nasal congestion.

The prescribing information for Zyrtec shows around 13% of users will experience sedation or drowsiness. Zyrtec is beneficial for preventing allergy symptoms such as: Running nose; Congestion; Post nasal drip; Itchy, watery eyes; Combining The Two. As mentioned, DayQuil and Zyrtec can be taken together and both may be …

Answer. In most cases, NyQuil should not be taken with Robitussin products as they share many of the same ingredients. Both Robitussin and NyQuil are brand names and there are a variety of products marketed under each. it is important to look at the label of the products to double-check whether or not they contain the same ingredients.Those should not be mixed with narcotics. The alcohol free types are ok. Also make sure there is no tylenol (acetaminophen )in both. Many narcotics and some of the nyquil mixes have it. No: These drugs will have a synergistic effect and so can increase respiratory depression. Talk to your local provider and together come up with plan for …Call your doctor or 911 if you think you may have a medical emergency. Yes tho dont need to: Nyquil has an antihistamine so really no added benefit to both it and Benadryl (diphenhydramine) at the same time.Paxil is an SSRI (selective serotonin reuptake inhibitor) that does have a few drug interactions and considerations with over-the-counter medication that are important to be aware of. There are many that are safe to take. They include: Antihistamines (e.g. Claritin, Allegra, Benadryl, Zyrtec etc...) Tylenol (acetaminophen) Mucinex (guaifenesin ...Applies to: meclizine and Zyrtec (cetirizine) Using cetirizine together with meclizine may increase side effects such as dizziness, drowsiness, 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 ...AnswerZoloft is an anti-depressant that is most commonly instructed to be taken in the morning. One of the most common side effects Zoloft has on people is insomnia. If you are using Nyquil to ...

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cetirizine food. Applies to: Zyrtec (cetirizine) Alcohol can increase the nervous system side effects of cetirizine 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 cetirizine.Get ratings and reviews for the top 12 pest companies in Mentone, CA. Helping you find the best pest companies for the job. Expert Advice On Improving Your Home All Projects Featur...Yes: Tamiflu (oseltamivir) is used for flu and zyrtec could be used to relief the associated stuffy nose. It is unclear while you will be on steroids anf D... Read More. Created for people with ongoing healthcare needs but benefits everyone. Learn how we can help. 4.5k views Reviewed >2 years ago. Thank.6 doctors weighed in across 2 answers. on atenolol (25mg) verapamil (120mg).i have head cold so took dayquil/ afrin nose spray.heart rate dipping into high 40's,low 50's.keeps skipping?: ER now: and hold all your medications, what is happening is a bad inte.Zyrtec (cetirizine) Capmist DM alcohol/food interactions. There is 1 alcohol/food interaction with Capmist DM ... Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. Unknown: No interaction information available.Applies to: Zyrtec (cetirizine) Alcohol can increase the nervous system side effects of cetirizine 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 cetirizine.Paxil is an SSRI (selective serotonin reuptake inhibitor) that does have a few drug interactions and considerations with over-the-counter medication that are important to be aware of. There are many that are safe to take. They include: Antihistamines (e.g. Claritin, Allegra, Benadryl, Zyrtec etc...) Tylenol (acetaminophen) Mucinex (guaifenesin ...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.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. ….

European privacy rights group noyb is building a case against every political party in Germany, alleging unlawful microtargeting of voters. In its latest piece of strategic litigat... Pros and Cons. Pros and Const for Antihistamine / Decongestant. Pros. • Easier to take a combination pill instead of two separate pills to treat congestion and other allergy symptoms. • Starts working within an hour. • Usually causes less daytime drowsiness compared to other antihistamines. • Available over-the-counter (OTC) without a ... Summary. Claritin (loratadine) and Zyrtec (cetirizine) should not be taken together as they are both in the same class of medication. Using both Claritin and Zyrtec may increase the risk of side effects and likely won't help relieve your allergies any more than either one alone. If you need additional relief after taking Claritin or Zyrtec ...It is especially important that you do not use any medicine with dextromethorphan if you take a selective serotonin reuptake inhibitor (SSRI) such as Prozac (fluoxetine), Zoloft (sertraline), or Lexapro (escitalopram). The combination can cause a serious interaction called serotonin syndrome. Like other antidepressants, monoamine oxidase ...Applies to: Zyrtec (cetirizine) and azelastine nasal. Using cetirizine together with azelastine nasal may increase side effects such as dizziness, drowsiness, 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 ...Applies to: diazepam and Zyrtec (cetirizine) Using cetirizine together with diazePAM may increase side effects such as dizziness, drowsiness, 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 ...Ingredient Duplication: Theraflu and Nyquil might contain similar active ingredients, increasing the risk of accidental overdosing. Liver Overload: Both medications can impact liver function. Combining them could strain this vital organ, especially if taken for extended periods. Side Effect Intensification: Concurrent use might amplify side ...Antihistamines are safe to take with Eliquis. They are useful for treating a number of symptoms associated with a cold, such as: Runny nose; Watery eyes; Additionally, sedating antihistamines, like Benadryl and doxylamine (contained in NyQuil), can help you fall asleep faster if you are dealing with a cold. Safe antihistamines include ...cetirizine food. Applies to: Zyrtec (cetirizine) Alcohol can increase the nervous system side effects of cetirizine 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 cetirizine. Can i take zyrtec and nyquil together, Yes, you can take Sudafed with NyQuil, but both medications should have a bit of a dosing gap. Sudafed is a decongestant containing pseudoephedrine, whereas NyQuil is a multi-ingredient medication containing acetaminophen, dextromethorphan and doxylamine. NyQuil does not work for nasal congestion (1,2). Sudafed is used to provide …, Answer. Typically, it is not recommended to use loratadine (Claritin) and cetirizine (Zyrtec) at the same time. Both medications are second-generation antihistamines used for allergy relief. Taking them together would not provide much-added benefit, but could lead to side effects such as drowsiness. In some patients, Zyrtec may work better than ..., Decongestants can pose a risk to people living with a thyroid disorder, such as an overactive thyroid ( hyperthyroidism) or an underactive thyroid ( hypothyroidism ). This is because ingredients like pseudoephedrine can affect the blood vessels throughout the body. Some drugs may interact with your thyroid medication., Home chevron_right Drug Comparisons. Compare Zyrtec vs. Nyquil. Head-to-head comparisons of medication uses, side effects, warnings, and more. Cetirizine (Zyrtec) Nyquil cold and flu. Summary. Cetirizine (Zyrtec) is an antihistamine. It's used for relief of allergy symptoms, such as runny nose or watery eyes, in adults and children., Yes, you can take NyQuil and Mucinex together if you have high blood pressure. They will not increase your blood pressure. However, be careful if you take Mucinex-D and NyQuil if you have high blood pressure. Mucinex-D contains pseudoephedrine (active ingredient in Sudafed), a nasal decongestant, which can …, May 12, 2022 · 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). What Is In Dayquil? DayQuil contains: Acetaminophen - Pain reliever/fever reducer , Zyrtec (cetirizine) Ipratropium nasal disease interactions. There is 1 disease interaction with ipratropium nasal which include: anticholinergic effects; Report options. ... Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. Unknown: No interaction ..., Bromfed DM Interactions. There are 544 drugs known to interact with Bromfed DM (brompheniramine / dextromethorphan / pseudoephedrine), along with 10 disease interactions, and 2 alcohol/food interactions. Of the total drug interactions, 85 are major, 451 are moderate, and 8 are minor., Answer. Hello and thanks for reaching out! More than happy to answer your question. Yes, Zyrtec (cetirizine) and Mucinex (guaifenesin) may be taken together as there is no drug interaction between the two. In fact, both products are included in many different cough/cold formulas and have a synergistic effect when used together., Warnings. One ingredient in this product is acetaminophen. Taking too much acetaminophen may cause serious (possibly fatal) liver disease. Adults should not take …, Common interactions among females include limb discomfort and loss of consciousness. Common interactions among males include anxiety and back injury. The phase IV clinical study analyzes what interactions people have when they take Nyquil and Zyrtec together. It is created by eHealthMe based on data from the FDA, and is updated regularly. , The safest antihistamines to take with Ativan are the ones that are non-drowsy. This includes most of the second-generation antihistamines, such as: Claritin ( loratadine) Allegra ( fexofenadine) Xyzal ( levocetirizine) Zyrtec (cetirizine) It should be noted that Claritin and Allegra are 'non-drowsy', and marketed as such, while Zyrtec and ..., We would like to show you a description here but the site won’t allow us., Can You Take Zicam and Nyquil Together. Before we delve into the details, let’s establish some background information. Zicam is an over-the-counter medication commonly used to relieve nasal congestion and cold symptoms. On the other hand, Nyquil is a popular over-the-counter cold and flu medication that helps alleviate symptoms such as ..., If you need to take both NyQuil and Delsym for your symptoms, it is important to separate the doses by the appropriate amount of time to avoid the risk of double dosing. So, if you take NyQuil first, you can safely take Delsym after 4 to 6 hours. If you take a 12-hour version of Delsym first, you should wait at least that amount of time before ..., cetirizine food. Applies to: Zyrtec (cetirizine) Alcohol can increase the nervous system side effects of cetirizine 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 cetirizine., Yes, But: It's OK for a short while - if symptoms get worse or persist for over 7-10 days, you may have something more than a cold or the flu. If those happen, see you physician to have it checked out. Answered 3/16/2018. 3.4k views., Yes you can will be very drowsy. Hello, you can take tramadol with nyquil, however they both may have the same dopey effect. It can slow your breathing down and even depress your pulse. Tramadol wasn't even considered a narcotic just a few years ago and its absolutely a mild narcotic, where you can take the nickel to help with your cough., cetirizine food. Applies to: Zyrtec (cetirizine) Alcohol can increase the nervous system side effects of cetirizine 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 cetirizine., Zyrtec (cetirizine) Cyproheptadine alcohol/food interactions. There is 1 alcohol/food interaction with cyproheptadine. ... Minimize risk; assess risk and consider an alternative drug, take steps to circumvent the interaction risk and/or institute a monitoring plan. Unknown: No interaction information available., However, medicines containing decongestants — including Allegra-D, Zyrtec-D and Claritin-D — could increase your blood pressure and heart rate or interfere with your heart medication. Managing a cold with hypertension . If you can't take a decongestant because of high blood pressure, there are other ways to reduce your cold or allergy symptoms:, Can I take Zyrtec-D and NyQuil cough together? A doctor has provided 1 answer. A member asked: Can i take nyquil a few hours after taking zyrtec (cetirizine)? A doctor has provided 1 answer. Online Primary Care Doctors Accepting New Patients. $44 video appointments available today with a membership as low as $15/month., Some patients take the Nyquil dose merely 4 hours after the Dayquil dose is ingested. Although this lower limit is considered to be within the safety window, it is always advisable to choose a median time frame- i.e. 5 hours in this case- to re-dose yourself. The chemical composition of both the drugs is so similar that it can affect the ..., Applies to: Zyrtec (cetirizine) and pregabalin. Using cetirizine together with pregabalin may increase side effects such as dizziness, drowsiness, 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 ..., There are 15 disease interactions with Theraflu Nighttime Severe Cold & Cough (acetaminophen / diphenhydramine / phenylephrine) which include: alcoholism. liver disease. depression. cardiovascular disease. PKU. anticholinergic effects. asthma/COPD. cardiovascular., No, it is not recommended to take Tylenol and NyQuil together. Tylenol is Acetaminophen, which is considered one of the safest painkillers, but taking it with NyQuil can affect your health as NyQuil also contains Acetaminophen as one of its ingredients (1,2). The others most commonly include Doxylamine and Dextromethorphan., A doctor has provided 1 answer. can i take benadryl (diphenhydramine) and nyquil together?: You can, but: Not recommended due to drug interactions. Both drugs inc., NyQuil and Advil can be safely together, but it may not be necessary as NyQuil already contains the pain reliever acetaminophen (which is the active ingredient in Tylenol).NyQuil contains 3 active ingredients (NyQuil Severe contains 4):. acetaminophen (pain reliever/fever reducer); doxylamine (sedating antihistamine); dextromethorphan …, 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 …, To summarize, there is no interaction between the muscle relaxant baclofen and the allergy medication you are taking (Zyrtec, Chlor-Trimeton). However, each of those can cause drowsiness and sedation. The Chlor-Trimeton is known to be more likely to cause sedation than Zyrtec is so it may be advisable to take Chlor-Trimeton at night., They can raise your blood pressure. • Pseudoephedrine is not safe for kidney patients. Medications for cough and chest congestion . Okay to use: • Guaifenesin (Mucinex and Robitussin DM ) for cough and chest congestion. • The cough suppressant dextromethorphan (Delsym DM , Vicks Nyquil Cough Liquid )., Dr. Michael Zacharisen answered. Specializes in Allergy and Immunology. Yes: While nyquil contains multiple ingredients that also includes an antihistamine, the addition of 1 Allegra (fexofenadine) (also an antihistamine) will not be harmful. Answered 10/20/2020., No. Nyquil has 500 mg of acetaminophen, and fioricet contains 325 mg acetaminophen. Taking these together would be an 825 mg dose. Common dosages are 325, 500 and 650 mg.