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 … ENT and Head and Neck Surgery 31 years experience. Allegra (fexofenadine) and NyQuil: Hello. You can take Allegra ( fexofenadine) and nyquil at the same time. No worries. Created for people with ongoing healthcare needs but benefits everyone. Learn how we can help. On Feb, 13, 2024. 64 people who take Nyquil and Allegra together, and have interactions are studied. What is Nyquil? Nyquil has active ingredients of acetaminophen / …You can safely take Mucinex and Nyquil together, but what about adding painkillers like Tylenol to the mix? Learn about interactions between these OTC meds here.Can i take allegra (fexofenadine) with nyquil? ... Can you take allegra (fexofenadine) and benedryl? A doctor has provided 1 answer. A member asked: Is it ok to take allegra (fexofenadine) if you have glaucoma? 15 doctors weighed …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. is it possible for you to take allegra (fexofenadine) and dayquil?: Yes you can: Yes you can as dayquil does not contain any antihistamine.Doxylamine (Vicks NyQuil, Tylenol Cold and Cough Nighttime) ... Fexofenadine (Allegra) Loratadine ; You can take second-generation antihistamines orally, nasally, or via an eye dropper. ... The phase IV clinical study analyzes what interactions people have when they take Singulair and Nyquil together. It is created by eHealthMe based on data from the FDA, and is updated regularly. Phase IV trials are used to detect adverse drug outcomes and monitor drug effectiveness in the real world. With medical big data and AI/ML algorithms ... Companies in the Healthcare sector have received a lot of coverage today as analysts weigh in on BeiGene (BGNE – Research Report), Arcus Biosc... Companies in the Healthcare sect...The short answer is yes – it is generally considered safe to take allergy medicine with DayQuil, especially short-term. However, there are a few precautions regarding ingredients that are important to know. DayQuil is an over-the-counter cough and cold medication that contains acetaminophen (Tylenol) as a pain and fever reducer, plus ...Dec 24, 2022 · 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. Montelukast (Singular) is an oral medication used to treat asthma and seasonal allergies. Medications that can interact with montelukast include gemfibrozil (Lopid), certain seizure medications, and rifampin. It’s OK to take montelukast with certain antihistamines, such as cetirizine (Zyrtec). But some people may experience excessive ... Yes, as you had take allegra is morning, this would not cause nay problem. Yes, you can take Nyquil in night. It would not cause any negative interaction. Sometimes, one may get drowsy. You should take adequate rest. You can Gargle with hot, saline water - mix 2 teaspoonfuls of salt in 1 glass of hot water and gargle thrice daily. acetaminophen food. Ask your doctor before using acetaminophen together with ethanol. This can cause serious side effects that affect your liver. Call your doctor immediately if you experience a fever, chills, joint pain or swelling, excessive tiredness or weakness, unusual bleeding or bruising, skin rash or itching, loss of appetite, nausea ...can i take allegra (fexofenadine) if im on loratabs?: Allegra (fexofenadine): Allegra (fexofenadine) is a very good anti-his. What We Treat. Allergies; Antibiotics; Asthma; ... Can i take nyquil while taking regular allegra (fexofenadine)? A doctor has provided 1 answer. A member asked: Bromfed Interactions. There are 472 drugs known to interact with Bromfed (brompheniramine / phenylephrine), along with 8 disease interactions, and 1 alcohol/food interaction. Of the total drug interactions, 35 are major, 434 are moderate, and 3 are minor. Flu medications, like Tamiflu (oseltamivir), shouldn’t be used to treat COVID-19. And although there are benefits to getting the flu shot, it can’t protect you from COVID-19. Veklury (remdesivir) and Olumiant (baricitinib) are two FDA-approved medications for COVID-19. Many other medications are authorized for emergency use.So far, a million Indians have used the online marketplace for accommodation. From roping in Bollywood celebrities to partnerships with local state governments, Airbnb, the online ...Find out how to remodel bathrooms that range from budget to modest to elaborate, and see the range of options available when tackling a bathroom remodel. Expert Advice On Improving...Generally, if you have high blood pressure, you’ll want to avoid taking decongestants if you can. But taking decongestants is more dangerous for people whose high blood pressure isn’t well controlled by medication. And raising the blood pressure even higher can increase the risk of complications like heart attack, stroke, and kidney injury.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.Yes. Sudafed (pseudoephedrine) is a decongestant, while Benadryl (diphenhydramine) is an antihistamine. "Antihistamines and decongestants work …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.I take 24 hour allegra (fexofenadine) for allergies, but am also battling a cold right now. can i take nyquil with my allegra (fexofenadine)? A doctor has provided 1 answer. A member asked: Is it okay to mix childrens allegra & childrens tylenol (acetaminophen) to treat cold/pains on a 2 year old?You should avoid taking Nyquil Night and an Allegra for the next 24 hours. Do saline gargles, oral antiseptic rinse, and menthol steam inhalation. Take Cepacol Sore Throat (Benzocaine/Menthol Lozenges) and vitamin C lozenges. Start a multivitamin & multi-mineral supplement. You should maintain good hydration with Gatorade, honey tea, …You should avoid taking Nyquil Night and an Allegra for the next 24 hours. Do saline gargles, oral antiseptic rinse, and menthol steam inhalation. Take Cepacol Sore Throat (Benzocaine/Menthol Lozenges) and vitamin C lozenges. Start a multivitamin & multi-mineral supplement. You should maintain good hydration with Gatorade, honey tea, …Advil multi symptom cold and flu; has ibuprofen, decongestant, and an anti histamine to control nose running. And it has no dextromethorphan that would be dangerous for someone on Zoloft. It’s a life saver. My doctor told me to take DayQuil but not NyQuil. Don’t take nsaids and dxm, I think you can take paracetamol.The good news here is that DayQuil and Allegra are safe to take together. There is no drug interaction between them. In fact, there are a variety of DayQuil products on the market, and Allegra is safe to take with all of them. DayQuil products include: DayQuil Cold & Flu. DayQuil Severe. DayQuil HBP.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. Nasacort disease interactions. There are 4 disease interactions with Nasacort (triamcinolone nasal) which include: hyperadrenocorticism. infections. ocular herpes simplex. ocular toxicities. 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.If you are taking doxycycline and experiencing stomach discomfort in your stomach or diarrhea, talk to your healthcare provider or pharmacist. They can recommend safe alternative options to Pepto-Bismol. 6. Iron supplements. If you have low iron levels, your healthcare provider may recommend an iron supplement. Iron supplements are …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 …The phase IV clinical study analyzes what interactions people who take Nyquil and Allegra have. It is created by eHealthMe based on reports of 64 people who take Nyquil and Allegra from the FDA, and is updated regularly. You may use the study as a second opinion to make health care decisions. Warnings. One ingredient in this product is acetaminophen. Taking too much acetaminophen may cause serious (possibly fatal) liver disease. Adults should not take more than 4000 milligrams (4 grams ... Step 1: Crush. The next step is to use water and a spoon to crush the pill. Put 1 doxycycline hyclate tablet in a small bowl. Add 4 teaspoons (20 mL) of water to the … Talk with your pharmacist to make sure these OTC medications are safe to take with your other prescribed medications. Medications for pain, fever, or body aches . Okay to use: • Acetaminophen (Tylenol ). o Use as directed and do not take more than the maximum daily dose. o If you have liver disease, talk to your doctor first. Thank. Dr. Michael Zacharisen answered. Specializes in Allergy and Immunology. Allegra (fexofenadine) D : For treating allergies, Allegra (fexofenadine) d has been shown to be …Sep 6, 2023 · You probably should not take them together at the same time. Nyquil contains diphenhydramine- an antihistamine that works in much the same way as Allegra (fexofenadine). The diphenhydramine in ... This guide will help you learn which medications you can safely take and which ones you should avoid. ... • Allegra-D , Claritin-D , Zyrtec-D due to their effect on blood pressure. • Combination (multi-symptom) cold, sinus, and flu products. ... Vicks Nyquil Cough Liquid ). • Coricidin Cold & Cough can help with a dry cough. • Vicks ...It’s usually safe to take Mucinex with Nyquil or Dayquil. But you should avoid taking Nyquil or Dayquil with Mucinex DM, since they all contain dextromethorphan. It’s …If you do have expired medications, there are several ways you can get rid of them. Disposing them at a drug take-back location is the safest option. Many health systems, police departments, and community pharmacies offer unused medication drop boxes. You can simply place any medications you want to dispose of in the bin and be …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.Generic Name (S): doxylamin-pse-dm-acetaminophen. Uses. Side Effects. Warnings. Precautions. Interactions. Uses. This combination medication is used to temporarily treat symptoms caused by the...You can safely take NyQuil during the day if you don’t mind feeling drowsy and tired. NyQuil is intended to be used at nighttime because it contains Doxylamine, which is a sedative antihistamine (1,2). The reason for adding it in the nighttime formulation is to prevent drowsiness during the daytime. If you don’t mind that and you have no ...RLS is considered a neurological and sleep disorder as patients feel uncomfortable sensations and strong urges to move their legs, which can sometimes be painful and often disrupts sleep. Many people take sedating and non-sedating antihistamines to help treat the symptoms of seasonal allergies, such as sneezing and a …I take 24 hour allegra (fexofenadine) for allergies, but am also battling a cold right now. can i take nyquil with my allegra (fexofenadine)? A doctor has provided 1 answer. A member asked: Is it okay to mix childrens allegra & childrens tylenol (acetaminophen) to treat cold/pains on a 2 year old?Some heart-safe antihistamines that can help with a stuffy nose from a cold include: • Claritin tablets (loratadine) • Zyrtec tablets (cetirizine) • Allegra tablets (fexofenadine) • Chlor-Trimeton (chlorpheniramine) Non-Drug Alternatives for Cold Relief. If you want to avoid medications altogether, you can try a variety of things to ...View all 291 medications that may interact with Allegra-D 24 Hour; View Allegra-D 24 Hour alcohol/food interactions (2) View Allegra-D 24 Hour disease interactions (7) Most frequently checked interactions. View interaction reports for Allegra-D 24 Hour (fexofenadine / pseudoephedrine) and the medicines listed below. Major; Moderate; Minor ...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.Find out about organic sources of nitrogen fertilizer for your lawn or garden including compost, manure, alfalfa meal, blood meal, cottonseed meal, and fish meal. Expert Advice On ...Find out about organic sources of nitrogen fertilizer for your lawn or garden including compost, manure, alfalfa meal, blood meal, cottonseed meal, and fish meal. Expert Advice On ...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.Although the EV sector struggles for traction, Lucid hopes that its latest Gravity SUV will eventually right the ship for LCID stock. The eventual debut could spark new life in the... Talk with your pharmacist to make sure these OTC medications are safe to take with your other prescribed medications. Medications for pain, fever, or body aches . Okay to use: • Acetaminophen (Tylenol ). o Use as directed and do not take more than the maximum daily dose. o If you have liver disease, talk to your doctor first. Fexofenadine And Pseudoephedrine (Allegra-D 24 Hour) received an overall rating of 6 out of 10 stars from 24 reviews. See what others have said about Fexofenadine And Pseudoephedri...Gargling with a saltwater rinse. Gargling with salt water is a common home remedy for cold symptoms, such as a cough or postnasal drip. It is virtually free of side effects and easy to do. A ...Taking aspirin during this time may cause bleeding problems. For diabetic patients taking aspirin- or sodium salicylate-containing medicine: False urine sugar test results may occur: If you take 8 or more 325-mg doses of aspirin every day for several days in a row. If you take 8 or more 325-mg or 4 or more 500-mg doses of sodium salicylate.I maintain that no one needs to be warned not to eat chicken cooked in cold medicine. Dear Food and Drug Administration: You need to start asking me what things are real and what t...Self-education about migraines can help people overcome stigma and get proper treatment. Trusted Health Information from the National Institutes of Health Education and communicati...Home. Allegra-D 24 Hour. Drug Interactions. Print. Save. Allegra-D 24 Hour Interactions. There are 291 drugs known to interact with Allegra-D 24 Hour …Can i take allegra (fexofenadine) with nyquil? ... Can you take allegra (fexofenadine) and benedryl? A doctor has provided 1 answer. A member asked: Is it ok to take allegra (fexofenadine) if you have glaucoma? 15 doctors weighed …Propafenone disease interactions. There are 7 disease interactions with propafenone which include: bronchospastic disorder. cardiac dysfunction. AV node dysfunction. electrolyte imbalance. (+) ANA titer. liver disease. renal dysfunction.Propafenone disease interactions. There are 7 disease interactions with propafenone which include: bronchospastic disorder. cardiac dysfunction. AV node dysfunction. electrolyte imbalance. (+) ANA titer. liver disease. renal dysfunction. Always get your doctor's or pharmacist's OK before you try a new supplement. It's also possible for a medication you take to interact with a health condition you have. Fortunately, prednisone is safe to take with all of the above drugs. In fact, NyQuil may help alleviate some of the side effects many individuals experience from prednisone, namely, insomnia and jitteriness. NyQuil can be a good option to help you get some sleep at night. About NyQuil. NyQuil is a combination ingredient cold/flu medication.The kidneys are responsible for clearing Tamiflu and ibuprofen from the body. Taking both medications if you have existing kidney problems can put extra stress on your kidneys. Similarly, taking Tamiflu, ibuprofen, and other medications that impact the kidneys can strain these organs. 5. Can you take Tamiflu and NyQuil?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.Unlike NyQuil, it doesn’t contain the active ingredient doxylamine, which is an antihistamine that can make you feel drowsy. ... Even if you take DayQuil as recommended, taking it with other ...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.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...You probably should not take them together at the same time. Nyquil contains diphenhydramine- an antihistamine that works in much the same way as Allegra (fexofenadine). The diphenhydramine in ...The active ingredients in NyQuil are acetaminophen, dextromethorphan HBr and doxylamine succinate. NyQuil also contains a number of inactive ingredients.Nasal sprays are topical decongestants. The active ingredient works within minutes to shrink swollen blood vessels in your nasal passages, helping you breathe more easily. Sprays containing ...Of course, there are individual differences in sensitivities. If you had a reaction to cold medication or think you had a seizure because of a cold medication in the past, don’t try it again. Keep taking your seizure medications regularly. The best way to deal with a cold or the flu is to avoid getting it.Can you Take Allegra and Nyquil. Allegra is a popular antihistamine medication that is commonly used to relieve symptoms of allergies. It contains an active ingredient called fexofenadine, which helps to block the effects of histamine in the body. Advair Diskus (fluticasone / salmeterol) albuterol. Allegra (fexofenadine) aspirin. atorvastatin. Benadryl (diphenhydramine) Fish Oil (omega-3 polyunsaturated fatty acids) Flonase (fluticasone nasal) fluticasone nasal. Combining a medication like NyQuil that contains dextromethorphan with an SSRI medication like Zoloft can cause a serious drug interaction called serotonin syndrome. SSRI drugs, kn...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 ...If you are taking doxycycline and experiencing stomach discomfort in your stomach or diarrhea, talk to your healthcare provider or pharmacist. They can recommend safe alternative options to Pepto-Bismol. 6. Iron supplements. If you have low iron levels, your healthcare provider may recommend an iron supplement. Iron supplements are …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 do have expired medications, there are several ways you can get rid of them. Disposing them at a drug take-back location is the safest option. Many health systems, police departments, and community pharmacies offer unused medication drop boxes. You can simply place any medications you want to dispose of in the bin and be on your way.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.They can tell you which OTC medicines are safe to use with your heart condition and the medications you take. 4. Avoid drugs with “D” after the name. Take time to read the warning labels on ...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.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.
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Yes, as you had take allegra is morning, this would not cause nay problem. Yes, you can take Nyquil in night. It would not cause any negative interaction. Sometimes, one may get drowsy. You should take adequate rest. You can Gargle with hot, saline water - mix 2 teaspoonfuls of salt in 1 glass of hot water and gargle thrice daily.Generally, if you have high blood pressure, you’ll want to avoid taking decongestants if you can. But taking decongestants is more dangerous for people whose high blood pressure isn’t well controlled by medication. And raising the blood pressure even higher can increase the risk of complications like heart attack, stroke, and kidney injury.fexofenadine food. Applies to: Allegra (fexofenadine) and Mucinex Allergy (fexofenadine) Consuming large amounts of certain fruit juices, including grapefruit, orange and apple, may decrease the levels of fexofenadine in your body. Fexofenadine should be taken with water and refrain from drinking large amounts of grapefruit, orange, or apple juice. Can i take allegra (fexofenadine) with nyquil? A doctor has provided 1 answer. Dr. Frances Ilozue answered. Specializes in Family Medicine. Cautiously: Be very careful as there may be increased side effects like drowsiness. Dr Fowler agreed. Answered 8/21/2020. 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.Pseudoephedrine (Sudafed) is an oral decongestant used to treat nasal congestion. It’s kept behind the counter at the pharmacy. Pseudoephedrine can interact with medications that affect the brain. These include tricyclic antidepressants (TCAs), some types of headache medications, and caffeine. It’s best to avoid interactions with ...• Call the transplant pharmacist or transplant team if you would like to take a medicine that is not on this list or if you have a question about any medicine ... • Allegra (fexofenadine) ... contain an NSAID (see list in Phenylephrine Pseudoephedrine Actifed NyQuil/DayQuil Sudafed Thera-Flu Alka-Seltzer Plus Claritin-D, Zyrtec-D, Allegra-D5. St. John's Wort. St. John's wort interacts with a variety of medications, according to the Mayo Clinic. That includes antidepressants, birth control pills, cyclosporine, HIV drugs and blood thinners, Trejo says, so make sure to talk with your doctor before you drink teas with St. John's wort.On Feb, 13, 2024. 64 people who take Nyquil and Allegra together, and have interactions are studied. What is Nyquil? Nyquil has active ingredients of acetaminophen / …Your healthcare provider may want you to take a lower quetiapine dose while you’re taking Paxlovid. Paxlovid can also cause serious reactions with clozapine (Clozaril), lurasidone (Latuda), and pimozide. You should avoid combining Paxlovid with these medications. 4. Seizure medicationsI take 24 hour allegra (fexofenadine) for allergies, but am also battling a cold right now. can i take nyquil with my allegra (fexofenadine)? A doctor has provided 1 answer. A member asked: Is it okay to mix childrens allegra & childrens tylenol (acetaminophen) to treat cold/pains on a 2 year old?Can you Take Allegra and Nyquil. Allegra is a popular antihistamine medication that is commonly used to relieve symptoms of allergies. It contains an active ingredient called fexofenadine, which helps to block the effects of histamine in the body.Propafenone disease interactions. There are 7 disease interactions with propafenone which include: bronchospastic disorder. cardiac dysfunction. AV node dysfunction. electrolyte imbalance. (+) ANA titer. liver disease. renal dysfunction.But their active ingredients and uses vary. It’s usually safe to take Mucinex with Nyquil or Dayquil. But you should avoid taking Nyquil or Dayquil with Mucinex DM, since they all contain dextromethorphan. It’s possible to take too much acetaminophen if you combine Tylenol with Nyquil or Dayquil. Talk to your healthcare provider or ...Taking aspirin during this time may cause bleeding problems. For diabetic patients taking aspirin- or sodium salicylate-containing medicine: False urine sugar test results may occur: If you take 8 or more 325-mg doses of aspirin every day for several days in a row. If you take 8 or more 325-mg or 4 or more 500-mg doses of sodium salicylate.It is generally not recommended to take NyQuil and Allegra together. This is because both NyQuil and Allegra contain antihistamines and two antihistamines are not supposed to be taken together. Allegra is Fexofenadine which is used to treat a variety of allergy symptoms.You probably should not take them together at the same time. Nyquil contains diphenhydramine- an antihistamine that works in much the same way as Allegra (fexofenadine). The diphenhydramine in ...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.You probably should not take them together at the same time. Nyquil contains diphenhydramine- an antihistamine that works in much the same way as Allegra (fexofenadine). The diphenhydramine in ...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..