what is the difference between cetirizine and diphenhydramine?
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In summary, cetirizine has similar efficacy and onset of action as compared with diphenhydramine in treating acute food allergic reactions. With added benefits of similar efficacy but longer duration of action compared with diphenhydramine, cetirizine is a good treatment option for acute food allergic reactions.
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Over-the-counter: cetirizine and pseudoephedrine (Zyrtec-D), fexofenadine and pseudoephedrine (Allegra-D), diphenhydramine and pseudoephedrine (Benadryl Allergy and Sinus), loratadine and pseudoephedrine (Claritin-D), and pseudoephedrine/triprolidine(Actifed) for nasal allergies; and naphazoline/pheniramine (Naphcon A) ...
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Sudafed Pe (Phenylephrine) is a good medication for relieving stuffy nose. It doesn't work as well as pseudoephedrine (Sudafed), but it has fewer side effects. Zyrtec (cetirizine) works to treat sneezing and runny nose, and causes less sedation compared to Benadryl. Works well to also treat hives and itchy skin.
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ZzzQuil contains diphenhydramine, the active ingredient in Benadryl, while Nyquil contains doxylamine. Both antihistamines cause sedation shortly after administration and help you to fall asleep. The difference in the two products are the additional ingredients Nyquil contains for the treatment of cough/cold symptoms.
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Hay fever and allergies - diphenhydramine comes as 25mg and 50mg tablets. The usual dose is 25mg or 50mg, taken 3 or 4 times a day. Try to space your doses evenly throughout the day. Insect bites, stings and eczema - diphenhydramine comes as a cream which you use once or twice a day.
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Diphenhydramine is used to relieve red, irritated, itchy, watery eyes; sneezing; and runny nose caused by hay fever, allergies, or the common cold. Diphenhydramine is also used to relieve cough caused by minor throat or airway irritation.
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Cetirizine is an antihistamine medicine that relieves the symptoms of allergies. It's used to treat: hay fever. conjunctivitis (red, itchy eye)
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Acetaminophen is a pain reliever and a fever reducer. Diphenhydramine is an antihistamine that reduces the natural chemical histamine in the body. Histamine can produce symptoms of sneezing, itching, watery eyes, and runny nose.
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Diphenhydramine (e.g., Benadryl®) is a first-generation antihistamine medication [1]. In addition to treating allergy and cold symptoms such as sneezing and watery eyes, it also blocks the actions of acetylcholine. This is a neurotransmitter that is important for brain functions including learning and memory.
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Cetirizine is classed as a non-drowsy antihistamine, but some people still find it makes them feel quite sleepy. Common side effects include headaches, dry mouth, feeling sick, dizziness, stomach pain and diarrhoea.
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Antihistamines. Benadryl (diphenhydramine), Zyrtec (cetirizine), and Claritin (loratadine) are commonly used antihistamines that relieve allergy symptoms or counteract allergic reactions. Antihistamines are usually safe but make some dogs drowsy and others hyperactive.
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['Claritin (loratadine)', 'Zyrtec (cetirizine)', 'Allegra (fexofenadine)', 'Xyzal (levocetirizine)', 'Benadryl (diphenhydramine)']
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Are Benadryl and Claritin the Same Thing? Benadryl (diphenhydramine) and Claritin (loratadine) are antihistamines used to treat allergy symptoms, such as itching, hives, runny nose, watery eyes, and sneezing from hay fever (allergic rhinitis) and other allergies, such as allergies to molds and dust mites.
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Uses. Diphenhydramine is an antihistamine used to relieve symptoms of allergy, hay fever, and the common cold. These symptoms include rash, itching, watery eyes, itchy eyes/nose/throat, cough, runny nose, and sneezing. It is also used to prevent and treat nausea, vomiting and dizziness caused by motion sickness.
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['Zyrtec-D® (cetirizine HCl 5 mg/pseudoephedrine HCl 120 mg) Tablets.', 'Active Ingredients.', 'Inactive ingredients. colloidal silicon dioxide, croscarmellose sodium, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, titanium dioxide.']
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It's usual to take cetirizine once a day. Children sometimes take it twice a day. Cetirizine is classed as a non-drowsy antihistamine, but some people still find it makes them feel quite sleepy.
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One major difference is their onset of action. Cetirizine relieves allergy symptoms in as little as one hour while loratadine may take up to three hours to be effective. The other difference is that cetirizine is more sedating than loratadine and is more likely to cause drowsiness.