list of antihistamine medications
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List of Antihistamines These can be thought of as the old-fashioned group of antihistamines. Diphenhydramine (Benadryl) is one of the most common first generation H1-receptor blockers. Other examples include clemastine (Tavist), dimenhydrinate (Dramamine), promethazine (Phenergan) and hydroxyzine (Vistaril, Atarax).
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- A drug may be classified by the chemical type of the active ingredient or by the way it is used to treat a particular condition. Each drug can be classified into one or more drug classes. Antihistamines are drugs that inhibit the action of histamine in the body by blocking the receptors of histamine. There are two types of histamine receptors H1 and H2. When H1 receptors are stimulated by histamine it may produce allergic reactions such as itching, hay fever and rash or hives.
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Allergy medications: Know your options Oral decongestants relieve nasal and sinus congestion caused by hay fever (allergic rhinitis). Many decongestants, such as pseudoephedrine (Sudafed, Afrinol, others), are available as over-the-counter drugs. A number of oral allergy medications contain a decongestant combined with an antihistamine.
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Allergic Reaction 1 Antihistamines, such as diphenhydramine (Benadryl). 2  This drug is given in an IV or in a muscle to rapidly reverse the actions of histamine. 3  Oral diphenhydramine is usually enough for a less severe reaction.here are many types of anti-allergy medications. The choice of medication and how it is given depends on the severity of the reaction. For relief of long-term allergies such as hay fever or reactions to dust or animal dander, the following medications may be recommended or prescribed:
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Hay Fever and Allergic Rhinitis Antihistamines are the mainstay of treatment in seasonal allergic rhinitis. They control the itch, sneeze runny nose and itchy eyes. Older antihistamines such as chlorpheniramine (Piriton), hydroxyzine (Atarax) and promethazine (Phenergan) control symptoms, are cheap but have significant sedating side effects.
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Allergy medications: Know your options Allergy medications are available as pills, liquids, inhalers, nasal sprays, eyedrops, skin creams and shots (injections). Some allergy medications are available over-the-counter, while others are available by prescription only. Here's a summary of the various types of allergy medications and why they're used. Antihistamines block histamine, a symptom-causing chemical released by your immune system during an allergic reaction.
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Best drugs to treat seasonal allergies If you and your doctor have decided an antihistamine is appropriate for your allergy symptoms, we have selected the following as Consumer Reports Best Buy Drugs based on dosing convenience, cost, effectiveness and safety: 1  Cetirizine. 2  Fexofenadine. 3  Loratadine.
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Allergy medications: Know your options These antihistamines are much less likely to cause drowsiness: 1  Cetirizine (Zyrtec Allergy) 2  Desloratadine (Clarinex) 3  Fexofenadine (Allegra Allergy) 4  Levocetirizine (Xyzal) 5  Loratadine (Alavert, Claritin)
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List of Antihistamines Pharmacist holding a large bottle of antihistamines. Photo Credit Jupiterimages/Stockbyte/Getty Images. Antihistamines have a broad range of functions -- they can ease allergy symptoms, alleviate gastrointestinal complaints, prevent motion sickness and aid in sleep, to name just a few. Antihistamines accomplish these tasks by counteracting histamine, an important protein with diverse effects in the body.
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Antihistamines and How They're Used Histamine binds to the histamine receptor, which is present on various cells in the body, and results in allergic symptoms such as sneezing, itchy eyes, itchy nose, hives, or even anaphylaxis. Antihistamines are medications that block the receptor for histamine, thereby stopping the symptoms that histamine causes.
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- Medical conditions associated with nasal antihistamines and decongestants: 1  Allergic Rhinitis. 2  Cold Symptoms. 3  Nasal Congestion. 4  Rhinorrhea.
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- Chlorphenamine is part of a series of antihistamines including pheniramine (Naphcon) and its halogenated derivatives and others including fluorpheniramine, dexchlorpheniramine (Polaramine), brompheniramine (Dimetapp), dexbrompheniramine (Drixoral), deschlorpheniramine, triprolidine (Actifed), and iodopheniramine.hlorphenamine is one of the most commonly used antihistamines in small-animal veterinary practice.
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Efficacy and Central Nervous System Impairment of Newer-generation Prescription Antihistamines in Seasonal Allergic Rhinitis Efficacy of Newer-generation Agents. Newer-and older-generation antihistamines have similar efficacy profiles. Cetirizine 10 mg, desloratadine 5 mg and fexofenadine HCI 180 mg once daily are three newer-generation prescription antihistamines indicated for use in patients with SAR in the US.
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- The following is a partial list of medications containing antihistamine. In addition to allergy more of these antihistamines. Please check with your pharmacist about these products.f you have any questions whethei a medication you are taking contains an antihistamine, please contact your pharmacy. and cold medications, sleep aids, anti-nausea and anti-depressant medications frequently contain antihistamines.
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For cold symptoms, here are the best over-the-counter drugs The downside of using older antihistamines such as Chlor-Trimeton are side effects that include drowsiness, dry eyes and dry mouth, and urinary retention. Newer antihistamines, such as Claritin (generic: loratadine) and Zyrtec (generic: cetirizine), work better for allergies but not as well for colds.
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Antihistamine Risks Vol. 6 No. 2 P. 6. Antihistamine medications block or reduce histamine-mediated effects at one of four identified histamine receptors (see Table 1 below). Currently the only FDA-approved histamine antagonist medications block the effects of histamine at H1 or H2 receptor sites. The term “antihistamine” generally is used to describe those medications that antagonize histamine activity at H1 receptors.
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Best drugs to treat seasonal allergies Avoiding substances that trigger your allergies can help, but since that is not always possible, you may reach for a medication. Several types of allergy treatments are available—allergy shots, antihistamines (pills, eye drops, and nasal sprays), cromolyn, leukotriene blockers, and nasal steroid sprays. This report focuses on second-generation antihistamine pills and nasal sprays, such as Allegra, Clarinex, Claritin, Xyzal, and Zyrtec.
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5 Best Over The Counter Antihistamines It does not work as well as the medications listed above because Tylenol's allergy medication are designed to serve more than one purpose. It makes the list of the best over-the-counter antihistamines because sometimes an allergy sufferer needs to target multiple symptoms. Alavert. Alavert is a generic name for a common allergy medication.
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Overview Among the most popular over-the-counter (OTC) allergy meds are Zyrtec and Claritin. These two allergy drugs produce very similar results. They both calm your immune system’s reaction to allergens. However, the potential side effects are different.
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Allergy medications: Know your options A number of oral allergy medications contain a decongestant and an antihistamine. 1  Examples include: 2  Cetirizine and pseudoephedrine (Zyrtec-D) 3  Desloratadine and pseudoephedrine (Clarinex-D) 4  Fexofenadine and pseudoephedrine (Allegra-D) 5  Loratadine and pseudoephedrine (Claritin-D)
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- Antihistamines can cause side effects, and some cause more side effects than others. Drugs such as Benadryl, Chlor-Trimeton, and Tavist and belong to an older group known as first-generation antihistamines. They tend to cause more side effects, particularly drowsiness.
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- Side effects may include stinging in the nose. Oral and nasal antihistamines: These drugs, whether OTC or prescription, counteract the action of histamine, a substance released in the body during an allergic reaction. Benadryl (diphenhydramine) and Chlor-Trimeton (chlorpheniramine) are examples of OTC antihistamines.any people with allergic rhinitis notice a seasonal pattern with their symptoms, but others may need a health care professional's help to find out for sure if pollen is the source of their misery. If symptoms crop up year-round, dust mites, pet dander or another indoor allergy trigger (allergen) could be the culprit.